Linux: Out-of-bounds Read
CVE-2025-23156 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 0beabe9b49190a02321b02792b29fc0f0e28b51f, f195e94c7af921d99abd79f57026a218d191d2c7, 0f9a4bab7d83738963365372e4745854938eab2d 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 0.22% 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 0beabe9b49190a02321b02792b29fc0f0e28b51f or f195e94c7af921d99abd79f57026a218d191d2c7 or 0f9a4bab7d83738963365372e4745854938eab2d or 05b07e52a0d08239147ba3460045855f4fb398de, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.10.237 or 5.15.181 or 6.1.135 or 6.6.88, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 1a73374a04e555103e5369429a30999114001dda up to, but not including, 0beabe9b49190a02321b02792b29fc0f0e28b51f; 1a73374a04e555103e5369429a30999114001dda up to, but not including, f195e94c7af921d99abd79f57026a218d191d2c7; 1a73374a04e555103e5369429a30999114001dda up to, but not including, 0f9a4bab7d83738963365372e4745854938eab2d; 1a73374a04e555103e5369429a30999114001dda up to, but not including, 05b07e52a0d08239147ba3460045855f4fb398de; 1a73374a04e555103e5369429a30999114001dda up to, but not including, bb3fd8b7906a12dc2b61389abb742bf6542d97fb; 1a73374a04e555103e5369429a30999114001dda up to, but not including, a736c72d476d1c7ca7be5018f2614ee61168ad01; 1a73374a04e555103e5369429a30999114001dda up to, but not including, 6d278c5548d840c4d85d445347b2a5c31b2ab3a0; 1a73374a04e555103e5369429a30999114001dda up to, but not including, 9edaaa8e3e15aab1ca413ab50556de1975bcb329; and 1 more ranges | 0beabe9b49190a02321b02792b29fc0f0e28b51f, f195e94c7af921d99abd79f57026a218d191d2c7, 0f9a4bab7d83738963365372e4745854938eab2d, 05b07e52a0d08239147ba3460045855f4fb398de, bb3fd8b7906a12dc2b61389abb742bf6542d97fb, a736c72d476d1c7ca7be5018f2614ee61168ad01 |
| Linux | Linux Kernel | 4.19 up to, but not including, 5.10.237; 5.11 up to, but not including, 5.15.181; 5.16 up to, but not including, 6.1.135; 6.2 up to, but not including, 6.6.88; 6.7 up to, but not including, 6.12.24; 6.13 up to, but not including, 6.13.12; 6.14 up to, but not including, 6.14.3 | 5.10.237, 5.15.181, 6.1.135, 6.6.88, 6.12.24, 6.13.12 |
| Debian | Debian Linux | 11.0 | Not stated |
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: media: venus: hfi_parser: refactor hfi packet parsing logic words_count denotes the number of words in total payload, while data points to payload of various property within it. When words_count reaches last word, data can access memory beyond the total payload. This can lead to OOB access. With this patch, the utility api for handling individual properties now returns the size of data consumed. Accordingly remaining bytes are calculated before parsing the payload, thereby eliminates the OOB access possibilities.
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/05b07e52a0d08239147ba3460045855f4fb398de
- git.kernel.org/stable/c/0beabe9b49190a02321b02792b29fc0f0e28b51f
- git.kernel.org/stable/c/0f9a4bab7d83738963365372e4745854938eab2d
- git.kernel.org/stable/c/6d278c5548d840c4d85d445347b2a5c31b2ab3a0
- git.kernel.org/stable/c/9edaaa8e3e15aab1ca413ab50556de1975bcb329
- git.kernel.org/stable/c/a736c72d476d1c7ca7be5018f2614ee61168ad01
- git.kernel.org/stable/c/bb3fd8b7906a12dc2b61389abb742bf6542d97fb
- git.kernel.org/stable/c/f195e94c7af921d99abd79f57026a218d191d2c7
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
Spotted an error? Tell us.