Linux: Out-of-bounds Read
CVE-2026-23288 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 cca770d710d5e03bc814af585cd6975eb6d74074, 1110a949675ebd56b3f0286e664ea543f745801c, 6.19.7 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 0.13% 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 cca770d710d5e03bc814af585cd6975eb6d74074 or 1110a949675ebd56b3f0286e664ea543f745801c or 6.19.7, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.19.7 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 13ae1a6000f7d8b09478e3128e87d45e89c7282f up to, but not including, cca770d710d5e03bc814af585cd6975eb6d74074; 3d32eb7a5ecff92d83a5fd34c45c171c17d3d5d0 up to, but not including, 1110a949675ebd56b3f0286e664ea543f745801c; 6.19.4 up to, but not including, 6.19.7 | cca770d710d5e03bc814af585cd6975eb6d74074, 1110a949675ebd56b3f0286e664ea543f745801c, 6.19.7 |
| Linux | Linux Kernel | 6.19.4 up to, but not including, 6.19.7; 7.0 | 6.19.7 |
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 CNA.
Official description
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix out-of-bounds memset in command slot handling The remaining space in a command slot may be smaller than the size of the command header. Clearing the command header with memset() before verifying the available slot space can result in an out-of-bounds write and memory corruption. Fix this by moving the memset() call after the size validation.
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
Recent Out-of-bounds Read vulnerabilities
- 7.1 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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