CVE-2021-47351

low-risk
Published 2024-05-21

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/20200630130438.141649-1-houtao1@huawei.com

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (10)

Patch https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6
Patch https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08
Patch https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82
Patch https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386
Patch https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5
Patch https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6
Patch https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08
Patch https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82
Patch https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386
Patch https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal