CVE - CVE-2022-49220

CVE-ID
CVE-2022-49220	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/770d42fff12d8595adda9025a0b92091f543e775 URL:https://git.kernel.org/stable/c/770d42fff12d8595adda9025a0b92091f543e775 MISC:https://git.kernel.org/stable/c/a7e8de822e0b1979f08767c751f6c8a9c1d4ad86 URL:https://git.kernel.org/stable/c/a7e8de822e0b1979f08767c751f6c8a9c1d4ad86 MISC:https://git.kernel.org/stable/c/b786abe7c67c6ef71410c8e23292b3091d616ad1 URL:https://git.kernel.org/stable/c/b786abe7c67c6ef71410c8e23292b3091d616ad1 MISC:https://git.kernel.org/stable/c/e2951eaa9398415ac054b7bd80b8163b6838ead4 URL:https://git.kernel.org/stable/c/e2951eaa9398415ac054b7bd80b8163b6838ead4 MISC:https://git.kernel.org/stable/c/ec376f5c11c88c0215d173599db8449cd4196759 URL:https://git.kernel.org/stable/c/ec376f5c11c88c0215d173599db8449cd4196759 MISC:https://git.kernel.org/stable/c/f2a1e0eb70c2d954176c07d75d28742bde30e9f3 URL:https://git.kernel.org/stable/c/f2a1e0eb70c2d954176c07d75d28742bde30e9f3
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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