In the Linux kernel, the following vulnerability has been resolved:
dax: make sure inodes are flushed before destroy cache
A bug can be triggered by following command
$ modprobe nd_pmem && modprobe -r nd_pmem
[ 10.060014] BUG dax_cache (Not tainted): Objects remaining in dax_cache on __kmem_cache_shutdown()
[ 10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node)
[ 10.062433] Call Trace:
[ 10.062673] dump_stack_lvl+0x34/0x44
[ 10.062865] slab_err+0x90/0xd0
[ 10.063619] __kmem_cache_shutdown+0x13b/0x2f0
[ 10.063848] kmem_cache_destroy+0x4a/0x110
[ 10.064058] __x64_sys_delete_module+0x265/0x300
This is caused by dax_fs_exit() not flushing inodes before destroy cache.
To fix this issue, call rcu_barrier() before destroy cache.
References
Configurations
Configuration 1 (hide)
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History
21 Oct 2025, 11:52
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| References | () https://git.kernel.org/stable/c/770d42fff12d8595adda9025a0b92091f543e775 - Patch | |
| References | () https://git.kernel.org/stable/c/a7e8de822e0b1979f08767c751f6c8a9c1d4ad86 - Patch | |
| References | () https://git.kernel.org/stable/c/b786abe7c67c6ef71410c8e23292b3091d616ad1 - Patch | |
| References | () https://git.kernel.org/stable/c/e2951eaa9398415ac054b7bd80b8163b6838ead4 - Patch | |
| References | () https://git.kernel.org/stable/c/ec376f5c11c88c0215d173599db8449cd4196759 - Patch | |
| References | () https://git.kernel.org/stable/c/f2a1e0eb70c2d954176c07d75d28742bde30e9f3 - Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| First Time |
Linux
Linux linux Kernel |
|
| CWE | NVD-CWE-noinfo | |
| Summary |
|
26 Feb 2025, 07:00
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-02-26 07:00
Updated : 2025-10-21 11:52
NVD link : CVE-2022-49220
Mitre link : CVE-2022-49220
CVE.ORG link : CVE-2022-49220
JSON object : View
Products Affected
linux
- linux_kernel
CWE