CVE-2023-53473
ext4: improve error handling from ext4_dirhash()
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: improve error handling from ext4_dirhash() The ext4_dirhash() will *almost* never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today. So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.
Timeline
ID reserved
By Linux
Published
- 13 months later
· 13 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected b886ee3e778ec2ad43e276fd378ab492cf6819b7 – < b2531936118deb3f479c4fa1bcd787b74b8faa6a
- affected b886ee3e778ec2ad43e276fd378ab492cf6819b7 – < f68876aeef96ef8b708ab10b9cb47ce0a5adb424
- affected b886ee3e778ec2ad43e276fd378ab492cf6819b7 – < 70d579aefa652a06af97e013e3fbbabbe5a43553
- affected b886ee3e778ec2ad43e276fd378ab492cf6819b7 – < c1fae027da61fe8e7eb99f7244297e81bc0f1e43
- affected b886ee3e778ec2ad43e276fd378ab492cf6819b7 – < 4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786
- affected 5.2
- unaffected < 5.2
- unaffected 5.15.112 – ≤ 5.15.*
- unaffected 6.1.29 – ≤ 6.1.*
- unaffected 6.2.16 – ≤ 6.2.*
- unaffected 6.3.3 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References (5)
- https://git.kernel.org/stable/c/b2531936118deb3f479c4fa1bcd787b74b8faa6a (opens in a new tab)
- https://git.kernel.org/stable/c/f68876aeef96ef8b708ab10b9cb47ce0a5adb424 (opens in a new tab)
- https://git.kernel.org/stable/c/70d579aefa652a06af97e013e3fbbabbe5a43553 (opens in a new tab)
- https://git.kernel.org/stable/c/c1fae027da61fe8e7eb99f7244297e81bc0f1e43 (opens in a new tab)
- https://git.kernel.org/stable/c/4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786 (opens in a new tab)
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)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-53473)Record last updated .