Linux: Out-of-bounds Read
CVE-2026-53044 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 f46870b451f7583802ed26eec8b93e138840fcd9, 5c009a5f8bb3c81f2cfb511701ce571e3c8733cd, 499f7e5ebbdd9ff0c4d532b1c432f8a61ff585b3 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 0.16% 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 f46870b451f7583802ed26eec8b93e138840fcd9 or 5c009a5f8bb3c81f2cfb511701ce571e3c8733cd or 499f7e5ebbdd9ff0c4d532b1c432f8a61ff585b3, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.18.33 or 7.0.10, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 25de5c8fe0801361182b41c42f086bd089feda14 up to, but not including, f46870b451f7583802ed26eec8b93e138840fcd9; 25de5c8fe0801361182b41c42f086bd089feda14 up to, but not including, 5c009a5f8bb3c81f2cfb511701ce571e3c8733cd; 25de5c8fe0801361182b41c42f086bd089feda14 up to, but not including, 499f7e5ebbdd9ff0c4d532b1c432f8a61ff585b3; 6.17 | f46870b451f7583802ed26eec8b93e138840fcd9, 5c009a5f8bb3c81f2cfb511701ce571e3c8733cd, 499f7e5ebbdd9ff0c4d532b1c432f8a61ff585b3 |
| Linux | Linux Kernel | 6.17 up to, but not including, 6.18.33; 6.19 up to, but not including, 7.0.10 | 6.18.33, 7.0.10 |
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 CNA.
Official description
In the Linux kernel, the following vulnerability has been resolved: soc/tegra: cbb: Fix incorrect ARRAY_SIZE in fabric lookup tables Fix incorrect ARRAY_SIZE usage in fabric lookup tables which could cause out-of-bounds access during target timeout lookup.
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
- 8.8 High severity
- 7.8 High severity
- 7.1 High severity
- 9.1 Critical severity
- 7.1 High severity
- 8.1 High severity
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