Linux: Out-of-bounds Read
CVE-2025-22079 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions ef34840bda333fe99bafbd2d73b70ceaaf9eba66, 538ed8b049ef801a86c543433e5061a91cc106e3, 17c99ab3db2ba74096d36c69daa6e784e98fc0b8 as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.26% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Linux to ef34840bda333fe99bafbd2d73b70ceaaf9eba66 or 538ed8b049ef801a86c543433e5061a91cc106e3 or 17c99ab3db2ba74096d36c69daa6e784e98fc0b8 or 11e24802e73362aa2948ee16b8fb4e32635d5b2a, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.4.292 or 5.10.236 or 5.15.180 or 6.1.134, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | ccd979bdbce9fba8412beb3f1de68a9d0171b12c up to, but not including, ef34840bda333fe99bafbd2d73b70ceaaf9eba66; ccd979bdbce9fba8412beb3f1de68a9d0171b12c up to, but not including, 538ed8b049ef801a86c543433e5061a91cc106e3; ccd979bdbce9fba8412beb3f1de68a9d0171b12c up to, but not including, 17c99ab3db2ba74096d36c69daa6e784e98fc0b8; ccd979bdbce9fba8412beb3f1de68a9d0171b12c up to, but not including, 11e24802e73362aa2948ee16b8fb4e32635d5b2a; ccd979bdbce9fba8412beb3f1de68a9d0171b12c up to, but not including, 3d012ba4404a0bb517658699ba85e6abda386dc3; ccd979bdbce9fba8412beb3f1de68a9d0171b12c up to, but not including, 49d2a2ea9d30991bae82107f9523915b91637683; ccd979bdbce9fba8412beb3f1de68a9d0171b12c up to, but not including, b942f88fe7d2d789e51c5c30a675fa1c126f5a6d; ccd979bdbce9fba8412beb3f1de68a9d0171b12c up to, but not including, e95d97c9c8cd0c239b7b59c79be0f6a9dcf7905c; and 2 more ranges | ef34840bda333fe99bafbd2d73b70ceaaf9eba66, 538ed8b049ef801a86c543433e5061a91cc106e3, 17c99ab3db2ba74096d36c69daa6e784e98fc0b8, 11e24802e73362aa2948ee16b8fb4e32635d5b2a, 3d012ba4404a0bb517658699ba85e6abda386dc3, 49d2a2ea9d30991bae82107f9523915b91637683 |
| Linux | Linux Kernel | 2.6.16 up to, but not including, 5.4.292; 5.5 up to, but not including, 5.10.236; 5.11 up to, but not including, 5.15.180; 5.16 up to, but not including, 6.1.134; 6.2 up to, but not including, 6.6.87; 6.7 up to, but not including, 6.12.23; 6.13 up to, but not including, 6.13.11; 6.14 up to, but not including, 6.14.2 | 5.4.292, 5.10.236, 5.15.180, 6.1.134, 6.6.87, 6.12.23 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | CNA |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: validate l_tree_depth to avoid out-of-bounds access The l_tree_depth field is 16-bit (__le16), but the actual maximum depth is limited to OCFS2_MAX_PATH_DEPTH. Add a check to prevent out-of-bounds access if l_tree_depth has an invalid value, which may occur when reading from a corrupted mounted disk [1].
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How developers prevent this class of flaw
- Use a language that provides appropriate memory abstractions.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- git.kernel.org/stable/c/11e24802e73362aa2948ee16b8fb4e32635d5b2a
- git.kernel.org/stable/c/17c99ab3db2ba74096d36c69daa6e784e98fc0b8
- git.kernel.org/stable/c/3d012ba4404a0bb517658699ba85e6abda386dc3
- git.kernel.org/stable/c/49d2a2ea9d30991bae82107f9523915b91637683
- git.kernel.org/stable/c/538ed8b049ef801a86c543433e5061a91cc106e3
- git.kernel.org/stable/c/a406aff8c05115119127c962cbbbbd202e1973ef
- git.kernel.org/stable/c/b942f88fe7d2d789e51c5c30a675fa1c126f5a6d
- git.kernel.org/stable/c/e95d97c9c8cd0c239b7b59c79be0f6a9dcf7905c
- git.kernel.org/stable/c/ef34840bda333fe99bafbd2d73b70ceaaf9eba66
Other references
Recent Out-of-bounds Read vulnerabilities
- 8.8 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
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