Linux: Out-of-bounds Read
CVE-2025-38375 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.8 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 773e95c268b5d859f51f7547559734fd2a57660c, ddc8649d363141fb3371dd81a73e1cb4ef8ed1e1, 982beb7582c193544eb9c6083937ec5ac1c9d651 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 0.21% 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 773e95c268b5d859f51f7547559734fd2a57660c or ddc8649d363141fb3371dd81a73e1cb4ef8ed1e1 or 982beb7582c193544eb9c6083937ec5ac1c9d651 or 6aca3dad2145e864dfe4d1060f45eb1bac75dd58, whichever matches your release line, or a later version.
- Update Linux Kernel to 5.4.297 or 5.10.241 or 5.15.189 or 6.1.144, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 4941d472bf95b4345d6e38906fcf354e74afa311 up to, but not including, 773e95c268b5d859f51f7547559734fd2a57660c; 4941d472bf95b4345d6e38906fcf354e74afa311 up to, but not including, ddc8649d363141fb3371dd81a73e1cb4ef8ed1e1; 4941d472bf95b4345d6e38906fcf354e74afa311 up to, but not including, 982beb7582c193544eb9c6083937ec5ac1c9d651; 4941d472bf95b4345d6e38906fcf354e74afa311 up to, but not including, 6aca3dad2145e864dfe4d1060f45eb1bac75dd58; 4941d472bf95b4345d6e38906fcf354e74afa311 up to, but not including, 80b971be4c37a4d23a7f1abc5ff33dc7733d649b; 4941d472bf95b4345d6e38906fcf354e74afa311 up to, but not including, bc68bc3563344ccdc57d1961457cdeecab8f81ef; 4941d472bf95b4345d6e38906fcf354e74afa311 up to, but not including, 11f2d0e8be2b5e784ac45fa3da226492c3e506d8; 4941d472bf95b4345d6e38906fcf354e74afa311 up to, but not including, 315dbdd7cdf6aa533829774caaf4d25f1fd20e73; and 1 more ranges | 773e95c268b5d859f51f7547559734fd2a57660c, ddc8649d363141fb3371dd81a73e1cb4ef8ed1e1, 982beb7582c193544eb9c6083937ec5ac1c9d651, 6aca3dad2145e864dfe4d1060f45eb1bac75dd58, 80b971be4c37a4d23a7f1abc5ff33dc7733d649b, bc68bc3563344ccdc57d1961457cdeecab8f81ef |
| Linux | Linux Kernel | 4.14 up to, but not including, 5.4.297; 5.5 up to, but not including, 5.10.241; 5.11 up to, but not including, 5.15.189; 5.16 up to, but not including, 6.1.144; 6.2 up to, but not including, 6.6.97; 6.7 up to, but not including, 6.12.37; 6.13 up to, but not including, 6.15.6; 6.16 | 5.4.297, 5.10.241, 5.15.189, 6.1.144, 6.6.97, 6.12.37 |
| 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
- HighData or code can be modified at will.
- 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:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.4 | High | CNA |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: virtio-net: ensure the received length does not exceed allocated size In xdp_linearize_page, when reading the following buffers from the ring, we forget to check the received length with the true allocate size. This can lead to an out-of-bound read. This commit adds that missing check.
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.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- git.kernel.org/stable/c/11f2d0e8be2b5e784ac45fa3da226492c3e506d8
- git.kernel.org/stable/c/315dbdd7cdf6aa533829774caaf4d25f1fd20e73
- git.kernel.org/stable/c/6aca3dad2145e864dfe4d1060f45eb1bac75dd58
- git.kernel.org/stable/c/773e95c268b5d859f51f7547559734fd2a57660c
- git.kernel.org/stable/c/80b971be4c37a4d23a7f1abc5ff33dc7733d649b
- git.kernel.org/stable/c/982beb7582c193544eb9c6083937ec5ac1c9d651
- git.kernel.org/stable/c/bc68bc3563344ccdc57d1961457cdeecab8f81ef
- git.kernel.org/stable/c/ddc8649d363141fb3371dd81a73e1cb4ef8ed1e1
Third-party and government advisories
- lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Recent Out-of-bounds Read vulnerabilities
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.8 High severity
- 7.8 High severity
Spotted an error? Tell us.