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CVE-2023-53569ext2: Check block size validity during mount
- 7.8HighCVSS base score
- 0.16%Exploitation in 30 daysEPSS · top 95% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: ext2: Check block size validity during mount Check that log of block size stored in the superblock has sensible value. Otherwise the shift computing the block size can overflow leading to undefined behavior.
Timeline
ID reserved
By Linux
Published
- 7 months later
· 7 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 |
|---|---|---|---|
| NVDNVD · Analyzed | 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)
- 0.16% · top 95% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 0ebfaf14150f55550cffb1148ed3920143c7a69c
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 451b98155be5dfee05bc6e7c8b30c0be4add3f71
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < c4813f858e5c3e4c4659ce95385c1c400c593e1e
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 22ab5fed07ad4b206ea910fd0132d1a0d4831584
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 99f8a15af6c9f0653193104a9e70891f950c6001
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < c2e7776843a953fd7e48895c3880c277f996193e
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 62aeb94433fcec80241754b70d0d1836d5926b0a
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 4.14.316 – ≤ 4.14.*
- unaffected 4.19.284 – ≤ 4.19.*
- unaffected 5.4.244 – ≤ 5.4.*
- unaffected 5.10.181 – ≤ 5.10.*
- unaffected 5.15.113 – ≤ 5.15.*
- unaffected 6.1.30 – ≤ 6.1.*
- unaffected 6.3.4 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References
References8
- https://git.kernel.org/stable/c/0ebfaf14150f55550cffb1148ed3920143c7a69c (opens in a new tab)
- https://git.kernel.org/stable/c/451b98155be5dfee05bc6e7c8b30c0be4add3f71 (opens in a new tab)
- https://git.kernel.org/stable/c/c4813f858e5c3e4c4659ce95385c1c400c593e1e (opens in a new tab)
- https://git.kernel.org/stable/c/22ab5fed07ad4b206ea910fd0132d1a0d4831584 (opens in a new tab)
- https://git.kernel.org/stable/c/99f8a15af6c9f0653193104a9e70891f950c6001 (opens in a new tab)
- https://git.kernel.org/stable/c/e6f4fb28890c1361e0db9eb1adee3fc04e7fe7f5 (opens in a new tab)
- https://git.kernel.org/stable/c/c2e7776843a953fd7e48895c3880c277f996193e (opens in a new tab)
- https://git.kernel.org/stable/c/62aeb94433fcec80241754b70d0d1836d5926b0a (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)
- EUVD EUVD-2025-32318 (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://cveledger.app/cve/CVE-2023-53569)Record last updated .