| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
io_uring: check for overflows in io_pin_pages
WARNING: CPU: 0 PID: 5834 at io_uring/memmap.c:144 io_pin_pages+0x149/0x180 io_uring/memmap.c:144
CPU: 0 UID: 0 PID: 5834 Comm: syz-executor825 Not tainted 6.12.0-next-20241118-syzkaller #0
Call Trace:
<TASK>
__io_uaddr_map+0xfb/0x2d0 io_uring/memmap.c:183
io_rings_map io_uring/io_uring.c:2611 [inline]
io_allocate_scq_urings+0x1c0/0x650 io_uring/io_uring.c:3470
io_uring_create+0x5b5/0xc00 io_uring/io_uring.c:3692
io_uring_setup io_uring/io_uring.c:3781 [inline]
...
</TASK>
io_pin_pages()'s uaddr parameter came directly from the user and can be
garbage. Don't just add size to it as it can overflow. |
| In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix use-after-free of signing key
Customers have reported use-after-free in @ses->auth_key.response with
SMB2.1 + sign mounts which occurs due to following race:
task A task B
cifs_mount()
dfs_mount_share()
get_session()
cifs_mount_get_session() cifs_send_recv()
cifs_get_smb_ses() compound_send_recv()
cifs_setup_session() smb2_setup_request()
kfree_sensitive() smb2_calc_signature()
crypto_shash_setkey() *UAF*
Fix this by ensuring that we have a valid @ses->auth_key.response by
checking whether @ses->ses_status is SES_GOOD or SES_EXITING with
@ses->ses_lock held. After commit 24a9799aa8ef ("smb: client: fix UAF
in smb2_reconnect_server()"), we made sure to call ->logoff() only
when @ses was known to be good (e.g. valid ->auth_key.response), so
it's safe to access signing key when @ses->ses_status == SES_EXITING. |
| In the Linux kernel, the following vulnerability has been resolved:
smb: Don't leak cfid when reconnect races with open_cached_dir
open_cached_dir() may either race with the tcon reconnection even before
compound_send_recv() or directly trigger a reconnection via
SMB2_open_init() or SMB_query_info_init().
The reconnection process invokes invalidate_all_cached_dirs() via
cifs_mark_open_files_invalid(), which removes all cfids from the
cfids->entries list but doesn't drop a ref if has_lease isn't true. This
results in the currently-being-constructed cfid not being on the list,
but still having a refcount of 2. It leaks if returned from
open_cached_dir().
Fix this by setting cfid->has_lease when the ref is actually taken; the
cfid will not be used by other threads until it has a valid time.
Addresses these kmemleaks:
unreferenced object 0xffff8881090c4000 (size 1024):
comm "bash", pid 1860, jiffies 4295126592
hex dump (first 32 bytes):
00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........".......
00 ca 45 22 81 88 ff ff f8 dc 4f 04 81 88 ff ff ..E"......O.....
backtrace (crc 6f58c20f):
[<ffffffff8b895a1e>] __kmalloc_cache_noprof+0x2be/0x350
[<ffffffff8bda06e3>] open_cached_dir+0x993/0x1fb0
[<ffffffff8bdaa750>] cifs_readdir+0x15a0/0x1d50
[<ffffffff8b9a853f>] iterate_dir+0x28f/0x4b0
[<ffffffff8b9a9aed>] __x64_sys_getdents64+0xfd/0x200
[<ffffffff8cf6da05>] do_syscall_64+0x95/0x1a0
[<ffffffff8d00012f>] entry_SYSCALL_64_after_hwframe+0x76/0x7e
unreferenced object 0xffff8881044fdcf8 (size 8):
comm "bash", pid 1860, jiffies 4295126592
hex dump (first 8 bytes):
00 cc cc cc cc cc cc cc ........
backtrace (crc 10c106a9):
[<ffffffff8b89a3d3>] __kmalloc_node_track_caller_noprof+0x363/0x480
[<ffffffff8b7d7256>] kstrdup+0x36/0x60
[<ffffffff8bda0700>] open_cached_dir+0x9b0/0x1fb0
[<ffffffff8bdaa750>] cifs_readdir+0x15a0/0x1d50
[<ffffffff8b9a853f>] iterate_dir+0x28f/0x4b0
[<ffffffff8b9a9aed>] __x64_sys_getdents64+0xfd/0x200
[<ffffffff8cf6da05>] do_syscall_64+0x95/0x1a0
[<ffffffff8d00012f>] entry_SYSCALL_64_after_hwframe+0x76/0x7e
And addresses these BUG splats when unmounting the SMB filesystem:
BUG: Dentry ffff888140590ba0{i=1000000000080,n=/} still in use (2) [unmount of cifs cifs]
WARNING: CPU: 3 PID: 3433 at fs/dcache.c:1536 umount_check+0xd0/0x100
Modules linked in:
CPU: 3 UID: 0 PID: 3433 Comm: bash Not tainted 6.12.0-rc4-g850925a8133c-dirty #49
Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020
RIP: 0010:umount_check+0xd0/0x100
Code: 8d 7c 24 40 e8 31 5a f4 ff 49 8b 54 24 40 41 56 49 89 e9 45 89 e8 48 89 d9 41 57 48 89 de 48 c7 c7 80 e7 db ac e8 f0 72 9a ff <0f> 0b 58 31 c0 5a 5b 5d 41 5c 41 5d 41 5e 41 5f e9 2b e5 5d 01 41
RSP: 0018:ffff88811cc27978 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888140590ba0 RCX: ffffffffaaf20bae
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff8881f6fb6f40
RBP: ffff8881462ec000 R08: 0000000000000001 R09: ffffed1023984ee3
R10: ffff88811cc2771f R11: 00000000016cfcc0 R12: ffff888134383e08
R13: 0000000000000002 R14: ffff8881462ec668 R15: ffffffffaceab4c0
FS: 00007f23bfa98740(0000) GS:ffff8881f6f80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556de4a6f808 CR3: 0000000123c80000 CR4: 0000000000350ef0
Call Trace:
<TASK>
d_walk+0x6a/0x530
shrink_dcache_for_umount+0x6a/0x200
generic_shutdown_super+0x52/0x2a0
kill_anon_super+0x22/0x40
cifs_kill_sb+0x159/0x1e0
deactivate_locked_super+0x66/0xe0
cleanup_mnt+0x140/0x210
task_work_run+0xfb/0x170
syscall_exit_to_user_mode+0x29f/0x2b0
do_syscall_64+0xa1/0x1a0
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f23bfb93ae7
Code: ff ff ff ff c3 66 0f 1f 44 00 00 48 8b 0d 11 93 0d 00 f7 d8 64 89 01 b8 ff ff ff ff eb bf 0f 1f 44 00 00 b8 50 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e9 92 0d 00 f7 d8 64 89
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
BUG: KASAN: slab-use-after-free in tcp_write_timer_handler+0x156/0x3e0
Read of size 1 at addr ffff888111f322cd by task swapper/0/0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc4-dirty #7
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1
Call Trace:
<IRQ>
dump_stack_lvl+0x68/0xa0
print_address_description.constprop.0+0x2c/0x3d0
print_report+0xb4/0x270
kasan_report+0xbd/0xf0
tcp_write_timer_handler+0x156/0x3e0
tcp_write_timer+0x66/0x170
call_timer_fn+0xfb/0x1d0
__run_timers+0x3f8/0x480
run_timer_softirq+0x9b/0x100
handle_softirqs+0x153/0x390
__irq_exit_rcu+0x103/0x120
irq_exit_rcu+0xe/0x20
sysvec_apic_timer_interrupt+0x76/0x90
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:default_idle+0xf/0x20
Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90
90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 f8 25 00 fb f4 <fa> c3 cc cc cc
cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffffffa2007e28 EFLAGS: 00000242
RAX: 00000000000f3b31 RBX: 1ffffffff4400fc7 RCX: ffffffffa09c3196
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9f00590f
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed102360835d
R10: ffff88811b041aeb R11: 0000000000000001 R12: 0000000000000000
R13: ffffffffa202d7c0 R14: 0000000000000000 R15: 00000000000147d0
default_idle_call+0x6b/0xa0
cpuidle_idle_call+0x1af/0x1f0
do_idle+0xbc/0x130
cpu_startup_entry+0x33/0x40
rest_init+0x11f/0x210
start_kernel+0x39a/0x420
x86_64_start_reservations+0x18/0x30
x86_64_start_kernel+0x97/0xa0
common_startup_64+0x13e/0x141
</TASK>
Allocated by task 595:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
__kasan_slab_alloc+0x87/0x90
kmem_cache_alloc_noprof+0x12b/0x3f0
copy_net_ns+0x94/0x380
create_new_namespaces+0x24c/0x500
unshare_nsproxy_namespaces+0x75/0xf0
ksys_unshare+0x24e/0x4f0
__x64_sys_unshare+0x1f/0x30
do_syscall_64+0x70/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 100:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
kasan_save_free_info+0x3b/0x60
__kasan_slab_free+0x54/0x70
kmem_cache_free+0x156/0x5d0
cleanup_net+0x5d3/0x670
process_one_work+0x776/0xa90
worker_thread+0x2e2/0x560
kthread+0x1a8/0x1f0
ret_from_fork+0x34/0x60
ret_from_fork_asm+0x1a/0x30
Reproduction script:
mkdir -p /mnt/nfsshare
mkdir -p /mnt/nfs/netns_1
mkfs.ext4 /dev/sdb
mount /dev/sdb /mnt/nfsshare
systemctl restart nfs-server
chmod 777 /mnt/nfsshare
exportfs -i -o rw,no_root_squash *:/mnt/nfsshare
ip netns add netns_1
ip link add name veth_1_peer type veth peer veth_1
ifconfig veth_1_peer 11.11.0.254 up
ip link set veth_1 netns netns_1
ip netns exec netns_1 ifconfig veth_1 11.11.0.1
ip netns exec netns_1 /root/iptables -A OUTPUT -d 11.11.0.254 -p tcp \
--tcp-flags FIN FIN -j DROP
(note: In my environment, a DESTROY_CLIENTID operation is always sent
immediately, breaking the nfs tcp connection.)
ip netns exec netns_1 timeout -s 9 300 mount -t nfs -o proto=tcp,vers=4.1 \
11.11.0.254:/mnt/nfsshare /mnt/nfs/netns_1
ip netns del netns_1
The reason here is that the tcp socket in netns_1 (nfs side) has been
shutdown and closed (done in xs_destroy), but the FIN message (with ack)
is discarded, and the nfsd side keeps sending retransmission messages.
As a result, when the tcp sock in netns_1 processes the received message,
it sends the message (FIN message) in the sending queue, and the tcp timer
is re-established. When the network namespace is deleted, the net structure
accessed by tcp's timer handler function causes problems.
To fix this problem, let's hold netns refcnt for the tcp kernel socket as
done in other modules. This is an ugly hack which can easily be backported
to earlier kernels. A proper fix which cleans up the interfaces will
follow, but may not be so easy to backport. |
| In the Linux kernel, the following vulnerability has been resolved:
exfat: fix out-of-bounds access of directory entries
In the case of the directory size is greater than or equal to
the cluster size, if start_clu becomes an EOF cluster(an invalid
cluster) due to file system corruption, then the directory entry
where ei->hint_femp.eidx hint is outside the directory, resulting
in an out-of-bounds access, which may cause further file system
corruption.
This commit adds a check for start_clu, if it is an invalid cluster,
the file or directory will be treated as empty. |
| In the Linux kernel, the following vulnerability has been resolved:
pmdomain: imx93-blk-ctrl: correct remove path
The check condition should be 'i < bc->onecell_data.num_domains', not
'bc->onecell_data.num_domains' which will make the look never finish
and cause kernel panic.
Also disable runtime to address
"imx93-blk-ctrl 4ac10000.system-controller: Unbalanced pm_runtime_enable!" |
| In the Linux kernel, the following vulnerability has been resolved:
x86/CPU/AMD: Clear virtualized VMLOAD/VMSAVE on Zen4 client
A number of Zen4 client SoCs advertise the ability to use virtualized
VMLOAD/VMSAVE, but using these instructions is reported to be a cause
of a random host reboot.
These instructions aren't intended to be advertised on Zen4 client
so clear the capability. |
| In the Linux kernel, the following vulnerability has been resolved:
smb: client: Fix use-after-free of network namespace.
Recently, we got a customer report that CIFS triggers oops while
reconnecting to a server. [0]
The workload runs on Kubernetes, and some pods mount CIFS servers
in non-root network namespaces. The problem rarely happened, but
it was always while the pod was dying.
The root cause is wrong reference counting for network namespace.
CIFS uses kernel sockets, which do not hold refcnt of the netns that
the socket belongs to. That means CIFS must ensure the socket is
always freed before its netns; otherwise, use-after-free happens.
The repro steps are roughly:
1. mount CIFS in a non-root netns
2. drop packets from the netns
3. destroy the netns
4. unmount CIFS
We can reproduce the issue quickly with the script [1] below and see
the splat [2] if CONFIG_NET_NS_REFCNT_TRACKER is enabled.
When the socket is TCP, it is hard to guarantee the netns lifetime
without holding refcnt due to async timers.
Let's hold netns refcnt for each socket as done for SMC in commit
9744d2bf1976 ("smc: Fix use-after-free in tcp_write_timer_handler().").
Note that we need to move put_net() from cifs_put_tcp_session() to
clean_demultiplex_info(); otherwise, __sock_create() still could touch a
freed netns while cifsd tries to reconnect from cifs_demultiplex_thread().
Also, maybe_get_net() cannot be put just before __sock_create() because
the code is not under RCU and there is a small chance that the same
address happened to be reallocated to another netns.
[0]:
CIFS: VFS: \\XXXXXXXXXXX has not responded in 15 seconds. Reconnecting...
CIFS: Serverclose failed 4 times, giving up
Unable to handle kernel paging request at virtual address 14de99e461f84a07
Mem abort info:
ESR = 0x0000000096000004
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x04: level 0 translation fault
Data abort info:
ISV = 0, ISS = 0x00000004
CM = 0, WnR = 0
[14de99e461f84a07] address between user and kernel address ranges
Internal error: Oops: 0000000096000004 [#1] SMP
Modules linked in: cls_bpf sch_ingress nls_utf8 cifs cifs_arc4 cifs_md4 dns_resolver tcp_diag inet_diag veth xt_state xt_connmark nf_conntrack_netlink xt_nat xt_statistic xt_MASQUERADE xt_mark xt_addrtype ipt_REJECT nf_reject_ipv4 nft_chain_nat nf_nat xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_comment nft_compat nf_tables nfnetlink overlay nls_ascii nls_cp437 sunrpc vfat fat aes_ce_blk aes_ce_cipher ghash_ce sm4_ce_cipher sm4 sm3_ce sm3 sha3_ce sha512_ce sha512_arm64 sha1_ce ena button sch_fq_codel loop fuse configfs dmi_sysfs sha2_ce sha256_arm64 dm_mirror dm_region_hash dm_log dm_mod dax efivarfs
CPU: 5 PID: 2690970 Comm: cifsd Not tainted 6.1.103-109.184.amzn2023.aarch64 #1
Hardware name: Amazon EC2 r7g.4xlarge/, BIOS 1.0 11/1/2018
pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : fib_rules_lookup+0x44/0x238
lr : __fib_lookup+0x64/0xbc
sp : ffff8000265db790
x29: ffff8000265db790 x28: 0000000000000000 x27: 000000000000bd01
x26: 0000000000000000 x25: ffff000b4baf8000 x24: ffff00047b5e4580
x23: ffff8000265db7e0 x22: 0000000000000000 x21: ffff00047b5e4500
x20: ffff0010e3f694f8 x19: 14de99e461f849f7 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000000 x12: 3f92800abd010002
x11: 0000000000000001 x10: ffff0010e3f69420 x9 : ffff800008a6f294
x8 : 0000000000000000 x7 : 0000000000000006 x6 : 0000000000000000
x5 : 0000000000000001 x4 : ffff001924354280 x3 : ffff8000265db7e0
x2 : 0000000000000000 x1 : ffff0010e3f694f8 x0 : ffff00047b5e4500
Call trace:
fib_rules_lookup+0x44/0x238
__fib_lookup+0x64/0xbc
ip_route_output_key_hash_rcu+0x2c4/0x398
ip_route_output_key_hash+0x60/0x8c
tcp_v4_connect+0x290/0x488
__inet_stream_connect+0x108/0x3d0
inet_stream_connect+0x50/0x78
kernel_connect+0x6c/0xac
generic_ip_conne
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
RDMA/siw: Add sendpage_ok() check to disable MSG_SPLICE_PAGES
While running ISER over SIW, the initiator machine encounters a warning
from skb_splice_from_iter() indicating that a slab page is being used in
send_page. To address this, it is better to add a sendpage_ok() check
within the driver itself, and if it returns 0, then MSG_SPLICE_PAGES flag
should be disabled before entering the network stack.
A similar issue has been discussed for NVMe in this thread:
https://lore.kernel.org/all/20240530142417.146696-1-ofir.gal@volumez.com/
WARNING: CPU: 0 PID: 5342 at net/core/skbuff.c:7140 skb_splice_from_iter+0x173/0x320
Call Trace:
tcp_sendmsg_locked+0x368/0xe40
siw_tx_hdt+0x695/0xa40 [siw]
siw_qp_sq_process+0x102/0xb00 [siw]
siw_sq_resume+0x39/0x110 [siw]
siw_run_sq+0x74/0x160 [siw]
kthread+0xd2/0x100
ret_from_fork+0x34/0x40
ret_from_fork_asm+0x1a/0x30 |
| In the Linux kernel, the following vulnerability has been resolved:
bpf: Add sk_is_inet and IS_ICSK check in tls_sw_has_ctx_tx/rx
As the introduction of the support for vsock and unix sockets in sockmap,
tls_sw_has_ctx_tx/rx cannot presume the socket passed in must be IS_ICSK.
vsock and af_unix sockets have vsock_sock and unix_sock instead of
inet_connection_sock. For these sockets, tls_get_ctx may return an invalid
pointer and cause page fault in function tls_sw_ctx_rx.
BUG: unable to handle page fault for address: 0000000000040030
Workqueue: vsock-loopback vsock_loopback_work
RIP: 0010:sk_psock_strp_data_ready+0x23/0x60
Call Trace:
? __die+0x81/0xc3
? no_context+0x194/0x350
? do_page_fault+0x30/0x110
? async_page_fault+0x3e/0x50
? sk_psock_strp_data_ready+0x23/0x60
virtio_transport_recv_pkt+0x750/0x800
? update_load_avg+0x7e/0x620
vsock_loopback_work+0xd0/0x100
process_one_work+0x1a7/0x360
worker_thread+0x30/0x390
? create_worker+0x1a0/0x1a0
kthread+0x112/0x130
? __kthread_cancel_work+0x40/0x40
ret_from_fork+0x1f/0x40
v2:
- Add IS_ICSK check
v3:
- Update the commits in Fixes |
| In the Linux kernel, the following vulnerability has been resolved:
afs: Fix lock recursion
afs_wake_up_async_call() can incur lock recursion. The problem is that it
is called from AF_RXRPC whilst holding the ->notify_lock, but it tries to
take a ref on the afs_call struct in order to pass it to a work queue - but
if the afs_call is already queued, we then have an extraneous ref that must
be put... calling afs_put_call() may call back down into AF_RXRPC through
rxrpc_kernel_shutdown_call(), however, which might try taking the
->notify_lock again.
This case isn't very common, however, so defer it to a workqueue. The oops
looks something like:
BUG: spinlock recursion on CPU#0, krxrpcio/7001/1646
lock: 0xffff888141399b30, .magic: dead4ead, .owner: krxrpcio/7001/1646, .owner_cpu: 0
CPU: 0 UID: 0 PID: 1646 Comm: krxrpcio/7001 Not tainted 6.12.0-rc2-build3+ #4351
Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014
Call Trace:
<TASK>
dump_stack_lvl+0x47/0x70
do_raw_spin_lock+0x3c/0x90
rxrpc_kernel_shutdown_call+0x83/0xb0
afs_put_call+0xd7/0x180
rxrpc_notify_socket+0xa0/0x190
rxrpc_input_split_jumbo+0x198/0x1d0
rxrpc_input_data+0x14b/0x1e0
? rxrpc_input_call_packet+0xc2/0x1f0
rxrpc_input_call_event+0xad/0x6b0
rxrpc_input_packet_on_conn+0x1e1/0x210
rxrpc_input_packet+0x3f2/0x4d0
rxrpc_io_thread+0x243/0x410
? __pfx_rxrpc_io_thread+0x10/0x10
kthread+0xcf/0xe0
? __pfx_kthread+0x10/0x10
ret_from_fork+0x24/0x40
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1a/0x30
</TASK> |
| In the Linux kernel, the following vulnerability has been resolved:
firmware: arm_scmi: Fix slab-use-after-free in scmi_bus_notifier()
The scmi_dev->name is released prematurely in __scmi_device_destroy(),
which causes slab-use-after-free when accessing scmi_dev->name in
scmi_bus_notifier(). So move the release of scmi_dev->name to
scmi_device_release() to avoid slab-use-after-free.
| BUG: KASAN: slab-use-after-free in strncmp+0xe4/0xec
| Read of size 1 at addr ffffff80a482bcc0 by task swapper/0/1
|
| CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.6.38-debug #1
| Hardware name: Qualcomm Technologies, Inc. SA8775P Ride (DT)
| Call trace:
| dump_backtrace+0x94/0x114
| show_stack+0x18/0x24
| dump_stack_lvl+0x48/0x60
| print_report+0xf4/0x5b0
| kasan_report+0xa4/0xec
| __asan_report_load1_noabort+0x20/0x2c
| strncmp+0xe4/0xec
| scmi_bus_notifier+0x5c/0x54c
| notifier_call_chain+0xb4/0x31c
| blocking_notifier_call_chain+0x68/0x9c
| bus_notify+0x54/0x78
| device_del+0x1bc/0x840
| device_unregister+0x20/0xb4
| __scmi_device_destroy+0xac/0x280
| scmi_device_destroy+0x94/0xd0
| scmi_chan_setup+0x524/0x750
| scmi_probe+0x7fc/0x1508
| platform_probe+0xc4/0x19c
| really_probe+0x32c/0x99c
| __driver_probe_device+0x15c/0x3c4
| driver_probe_device+0x5c/0x170
| __driver_attach+0x1c8/0x440
| bus_for_each_dev+0xf4/0x178
| driver_attach+0x3c/0x58
| bus_add_driver+0x234/0x4d4
| driver_register+0xf4/0x3c0
| __platform_driver_register+0x60/0x88
| scmi_driver_init+0xb0/0x104
| do_one_initcall+0xb4/0x664
| kernel_init_freeable+0x3c8/0x894
| kernel_init+0x24/0x1e8
| ret_from_fork+0x10/0x20
|
| Allocated by task 1:
| kasan_save_stack+0x2c/0x54
| kasan_set_track+0x2c/0x40
| kasan_save_alloc_info+0x24/0x34
| __kasan_kmalloc+0xa0/0xb8
| __kmalloc_node_track_caller+0x6c/0x104
| kstrdup+0x48/0x84
| kstrdup_const+0x34/0x40
| __scmi_device_create.part.0+0x8c/0x408
| scmi_device_create+0x104/0x370
| scmi_chan_setup+0x2a0/0x750
| scmi_probe+0x7fc/0x1508
| platform_probe+0xc4/0x19c
| really_probe+0x32c/0x99c
| __driver_probe_device+0x15c/0x3c4
| driver_probe_device+0x5c/0x170
| __driver_attach+0x1c8/0x440
| bus_for_each_dev+0xf4/0x178
| driver_attach+0x3c/0x58
| bus_add_driver+0x234/0x4d4
| driver_register+0xf4/0x3c0
| __platform_driver_register+0x60/0x88
| scmi_driver_init+0xb0/0x104
| do_one_initcall+0xb4/0x664
| kernel_init_freeable+0x3c8/0x894
| kernel_init+0x24/0x1e8
| ret_from_fork+0x10/0x20
|
| Freed by task 1:
| kasan_save_stack+0x2c/0x54
| kasan_set_track+0x2c/0x40
| kasan_save_free_info+0x38/0x5c
| __kasan_slab_free+0xe8/0x164
| __kmem_cache_free+0x11c/0x230
| kfree+0x70/0x130
| kfree_const+0x20/0x40
| __scmi_device_destroy+0x70/0x280
| scmi_device_destroy+0x94/0xd0
| scmi_chan_setup+0x524/0x750
| scmi_probe+0x7fc/0x1508
| platform_probe+0xc4/0x19c
| really_probe+0x32c/0x99c
| __driver_probe_device+0x15c/0x3c4
| driver_probe_device+0x5c/0x170
| __driver_attach+0x1c8/0x440
| bus_for_each_dev+0xf4/0x178
| driver_attach+0x3c/0x58
| bus_add_driver+0x234/0x4d4
| driver_register+0xf4/0x3c0
| __platform_driver_register+0x60/0x88
| scmi_driver_init+0xb0/0x104
| do_one_initcall+0xb4/0x664
| kernel_init_freeable+0x3c8/0x894
| kernel_init+0x24/0x1e8
| ret_from_fork+0x10/0x20 |
| In the Linux kernel, the following vulnerability has been resolved:
drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy()
In mtk_crtc_create(), if the call to mbox_request_channel() fails then we
set the "mtk_crtc->cmdq_client.chan" pointer to NULL. In that situation,
we do not call cmdq_pkt_create().
During the cleanup, we need to check if the "mtk_crtc->cmdq_client.chan"
is NULL first before calling cmdq_pkt_destroy(). Calling
cmdq_pkt_destroy() is unnecessary if we didn't call cmdq_pkt_create() and
it will result in a NULL pointer dereference. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/i915/hdcp: Add encoder check in intel_hdcp_get_capability
Sometimes during hotplug scenario or suspend/resume scenario encoder is
not always initialized when intel_hdcp_get_capability add
a check to avoid kernel null pointer dereference. |
| In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Mark inode as bad as soon as error detected in mi_enum_attr()
Extended the `mi_enum_attr()` function interface with an additional
parameter, `struct ntfs_inode *ni`, to allow marking the inode
as bad as soon as an error is detected. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/msm/gem: prevent integer overflow in msm_ioctl_gem_submit()
The "submit->cmd[i].size" and "submit->cmd[i].offset" variables are u32
values that come from the user via the submit_lookup_cmds() function.
This addition could lead to an integer wrapping bug so use size_add()
to prevent that.
Patchwork: https://patchwork.freedesktop.org/patch/624696/ |
| In the Linux kernel, the following vulnerability has been resolved:
media: av7110: fix a spectre vulnerability
As warned by smatch:
drivers/staging/media/av7110/av7110_ca.c:270 dvb_ca_ioctl() warn: potential spectre issue 'av7110->ci_slot' [w] (local cap)
There is a spectre-related vulnerability at the code. Fix it. |
| In the Linux kernel, the following vulnerability has been resolved:
ksmbd: check outstanding simultaneous SMB operations
If Client send simultaneous SMB operations to ksmbd, It exhausts too much
memory through the "ksmbd_work_cache”. It will cause OOM issue.
ksmbd has a credit mechanism but it can't handle this problem. This patch
add the check if it exceeds max credits to prevent this problem by assuming
that one smb request consumes at least one credit. |
| In the Linux kernel, the following vulnerability has been resolved:
cxl/port: Fix use-after-free, permit out-of-order decoder shutdown
In support of investigating an initialization failure report [1],
cxl_test was updated to register mock memory-devices after the mock
root-port/bus device had been registered. That led to cxl_test crashing
with a use-after-free bug with the following signature:
cxl_port_attach_region: cxl region3: cxl_host_bridge.0:port3 decoder3.0 add: mem0:decoder7.0 @ 0 next: cxl_switch_uport.0 nr_eps: 1 nr_targets: 1
cxl_port_attach_region: cxl region3: cxl_host_bridge.0:port3 decoder3.0 add: mem4:decoder14.0 @ 1 next: cxl_switch_uport.0 nr_eps: 2 nr_targets: 1
cxl_port_setup_targets: cxl region3: cxl_switch_uport.0:port6 target[0] = cxl_switch_dport.0 for mem0:decoder7.0 @ 0
1) cxl_port_setup_targets: cxl region3: cxl_switch_uport.0:port6 target[1] = cxl_switch_dport.4 for mem4:decoder14.0 @ 1
[..]
cxld_unregister: cxl decoder14.0:
cxl_region_decode_reset: cxl_region region3:
mock_decoder_reset: cxl_port port3: decoder3.0 reset
2) mock_decoder_reset: cxl_port port3: decoder3.0: out of order reset, expected decoder3.1
cxl_endpoint_decoder_release: cxl decoder14.0:
[..]
cxld_unregister: cxl decoder7.0:
3) cxl_region_decode_reset: cxl_region region3:
Oops: general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6bc3: 0000 [#1] PREEMPT SMP PTI
[..]
RIP: 0010:to_cxl_port+0x8/0x60 [cxl_core]
[..]
Call Trace:
<TASK>
cxl_region_decode_reset+0x69/0x190 [cxl_core]
cxl_region_detach+0xe8/0x210 [cxl_core]
cxl_decoder_kill_region+0x27/0x40 [cxl_core]
cxld_unregister+0x5d/0x60 [cxl_core]
At 1) a region has been established with 2 endpoint decoders (7.0 and
14.0). Those endpoints share a common switch-decoder in the topology
(3.0). At teardown, 2), decoder14.0 is the first to be removed and hits
the "out of order reset case" in the switch decoder. The effect though
is that region3 cleanup is aborted leaving it in-tact and
referencing decoder14.0. At 3) the second attempt to teardown region3
trips over the stale decoder14.0 object which has long since been
deleted.
The fix here is to recognize that the CXL specification places no
mandate on in-order shutdown of switch-decoders, the driver enforces
in-order allocation, and hardware enforces in-order commit. So, rather
than fail and leave objects dangling, always remove them.
In support of making cxl_region_decode_reset() always succeed,
cxl_region_invalidate_memregion() failures are turned into warnings.
Crashing the kernel is ok there since system integrity is at risk if
caches cannot be managed around physical address mutation events like
CXL region destruction.
A new device_for_each_child_reverse_from() is added to cleanup
port->commit_end after all dependent decoders have been disabled. In
other words if decoders are allocated 0->1->2 and disabled 1->2->0 then
port->commit_end only decrements from 2 after 2 has been disabled, and
it decrements all the way to zero since 1 was disabled previously. |
| In the Linux kernel, the following vulnerability has been resolved:
nvme-pci: fix race condition between reset and nvme_dev_disable()
nvme_dev_disable() modifies the dev->online_queues field, therefore
nvme_pci_update_nr_queues() should avoid racing against it, otherwise
we could end up passing invalid values to blk_mq_update_nr_hw_queues().
WARNING: CPU: 39 PID: 61303 at drivers/pci/msi/api.c:347
pci_irq_get_affinity+0x187/0x210
Workqueue: nvme-reset-wq nvme_reset_work [nvme]
RIP: 0010:pci_irq_get_affinity+0x187/0x210
Call Trace:
<TASK>
? blk_mq_pci_map_queues+0x87/0x3c0
? pci_irq_get_affinity+0x187/0x210
blk_mq_pci_map_queues+0x87/0x3c0
nvme_pci_map_queues+0x189/0x460 [nvme]
blk_mq_update_nr_hw_queues+0x2a/0x40
nvme_reset_work+0x1be/0x2a0 [nvme]
Fix the bug by locking the shutdown_lock mutex before using
dev->online_queues. Give up if nvme_dev_disable() is running or if
it has been executed already. |
