In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: Fix command stats access after free
Command may fail while driver is reloading and can't accept FW commands
till command interface is reinitialized. Such command failure is being
logged to command stats. This results in NULL pointer access as command
stats structure is being freed and reallocated during mlx5 devlink
reload (see kernel log below).
Fix it by making command stats statically allocated on driver probe.
Kernel log:
[ 2394.808802] BUG: unable to handle kernel paging request at 000000000002a9c0
[ 2394.810610] PGD 0 P4D 0
[ 2394.811811] Oops: 0002 [#1] SMP NOPTI
...
[ 2394.815482] RIP: 0010:native_queued_spin_lock_slowpath+0x183/0x1d0
...
[ 2394.829505] Call Trace:
[ 2394.830667] _raw_spin_lock_irq+0x23/0x26
[ 2394.831858] cmd_status_err+0x55/0x110 [mlx5_core]
[ 2394.833020] mlx5_access_reg+0xe7/0x150 [mlx5_core]
[ 2394.834175] mlx5_query_port_ptys+0x78/0xa0 [mlx5_core]
[ 2394.835337] mlx5e_ethtool_get_link_ksettings+0x74/0x590 [mlx5_core]
[ 2394.836454] ? kmem_cache_alloc_trace+0x140/0x1c0
[ 2394.837562] __rh_call_get_link_ksettings+0x33/0x100
[ 2394.838663] ? __rtnl_unlock+0x25/0x50
[ 2394.839755] __ethtool_get_link_ksettings+0x72/0x150
[ 2394.840862] duplex_show+0x6e/0xc0
[ 2394.841963] dev_attr_show+0x1c/0x40
[ 2394.843048] sysfs_kf_seq_show+0x9b/0x100
[ 2394.844123] seq_read+0x153/0x410
[ 2394.845187] vfs_read+0x91/0x140
[ 2394.846226] ksys_read+0x4f/0xb0
[ 2394.847234] do_syscall_64+0x5b/0x1a0
[ 2394.848228] entry_SYSCALL_64_after_hwframe+0x65/0xca
References
Configurations
Configuration 1 (hide)
|
History
08 Jan 2025, 21:31
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-476 | |
| References | () https://git.kernel.org/stable/c/ddf458641a511e7dff19f3bf0cbbc5dd9fe08ce5 - Patch | |
| References | () https://git.kernel.org/stable/c/da2e552b469a0cd130ff70a88ccc4139da428a65 - Patch | |
| First Time |
Linux linux Kernel
Linux |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* |
21 Aug 2024, 07:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-08-21 07:15
Updated : 2025-01-08 21:31
NVD link : CVE-2022-48884
Mitre link : CVE-2022-48884
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference