Linux: Out-of-bounds Read
CVE-2025-71136 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 f81ee181cb036d046340c213091b69d9a8701a76, f913b9a2ccd6114b206b9e91dae5e3dc13a415a0, d6a22a4a96e4dfe6897cb3532d2b3016d87706f0 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 0.14% 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 f81ee181cb036d046340c213091b69d9a8701a76 or f913b9a2ccd6114b206b9e91dae5e3dc13a415a0 or d6a22a4a96e4dfe6897cb3532d2b3016d87706f0 or a73881ae085db5702d8b13e2fc9f78d51c723d3f, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.10.248 or 5.15.198 or 6.1.160 or 6.6.120, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | a89bcd4c6c2023615a89001b5a11b0bb77eb9491 up to, but not including, f81ee181cb036d046340c213091b69d9a8701a76; a89bcd4c6c2023615a89001b5a11b0bb77eb9491 up to, but not including, f913b9a2ccd6114b206b9e91dae5e3dc13a415a0; a89bcd4c6c2023615a89001b5a11b0bb77eb9491 up to, but not including, d6a22a4a96e4dfe6897cb3532d2b3016d87706f0; a89bcd4c6c2023615a89001b5a11b0bb77eb9491 up to, but not including, a73881ae085db5702d8b13e2fc9f78d51c723d3f; a89bcd4c6c2023615a89001b5a11b0bb77eb9491 up to, but not including, 60dde0960e3ead8a9569f6c494d90d0232ac0983; a89bcd4c6c2023615a89001b5a11b0bb77eb9491 up to, but not including, b693d48a6ed0cd09171103ad418e4a693203d6e4; a89bcd4c6c2023615a89001b5a11b0bb77eb9491 up to, but not including, 8163419e3e05d71dcfa8fb49c8fdf8d76908fe51; 3.12 | f81ee181cb036d046340c213091b69d9a8701a76, f913b9a2ccd6114b206b9e91dae5e3dc13a415a0, d6a22a4a96e4dfe6897cb3532d2b3016d87706f0, a73881ae085db5702d8b13e2fc9f78d51c723d3f, 60dde0960e3ead8a9569f6c494d90d0232ac0983, b693d48a6ed0cd09171103ad418e4a693203d6e4 |
| Linux | Linux Kernel | 3.12.1 up to, but not including, 5.10.248; 5.11 up to, but not including, 5.15.198; 5.16 up to, but not including, 6.1.160; 6.2 up to, but not including, 6.6.120; 6.7 up to, but not including, 6.12.64; 6.13 up to, but not including, 6.18.4; 3.12; 6.19 | 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.4 |
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 | 7.1 | High | CNA |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status() It's possible for cp_read() and hdmi_read() to return -EIO. Those values are further used as indexes for accessing arrays. Fix that by checking return values where it's needed. Found by Linux Verification Center (linuxtesting.org) with SVACE.
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/60dde0960e3ead8a9569f6c494d90d0232ac0983
- git.kernel.org/stable/c/8163419e3e05d71dcfa8fb49c8fdf8d76908fe51
- git.kernel.org/stable/c/a73881ae085db5702d8b13e2fc9f78d51c723d3f
- git.kernel.org/stable/c/b693d48a6ed0cd09171103ad418e4a693203d6e4
- git.kernel.org/stable/c/d6a22a4a96e4dfe6897cb3532d2b3016d87706f0
- git.kernel.org/stable/c/f81ee181cb036d046340c213091b69d9a8701a76
- git.kernel.org/stable/c/f913b9a2ccd6114b206b9e91dae5e3dc13a415a0
Recent Out-of-bounds Read vulnerabilities
- 9.1 Critical severity
- 9.1 Critical severity
- 9.1 Critical severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
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