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CVE-2021-47351
ubifs: Fix races between xattr_{set|get} and listxattr operations
High7.8EPSS 0.25%
- Published
- Updated
- Reserved
- Assigned by
- Linux
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]
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < 7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < 38dde03eb239605f428f3f1e4baa73d4933a4cc6
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < 9558612cb829f2c022b788f55d6b8437d5234a82
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < c0756f75c22149d20fcb7d8409827cee905eb386
- affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d – < f4e3634a3b642225a530c292fdb1e8a4007507f5
- affected 2.6.27
- unaffected < 2.6.27
- unaffected 5.4.133 – ≤ 5.4.*
- unaffected 5.10.51 – ≤ 5.10.*
- unaffected 5.12.18 – ≤ 5.12.*
- unaffected 5.13.3 – ≤ 5.13.*
- unaffected 5.14 – ≤ *
References (5)
- https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2021-47351)Record last updated .