High severity7.8NVD Advisory· Published May 21, 2024· Updated Aug 4, 2026
CVE-2021-47351
CVE-2021-47351
Description
In the Linux kernel, the following vulnerability has been resolved:
ubifs: Fix races between xattr_{set|get} and listxattr operations
UBIFS may occur some problems with concurrent xattr_{set|get} and listxattr operations, such as assertion failure, memory corruption, stale xattr value[1].
Fix it by importing a new rw-lock in @ubifs_inode to serilize write operations on xattr, concurrent read operations are still effective, just like ext4.
[1] https://lore.kernel.org/linux-mtd/[email protected]
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Affected products
4Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6nvdPatch
- git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08nvdPatch
- git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82nvdPatch
- git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386nvdPatch
- git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5nvdPatch
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