Linux: Out-of-bounds Read
CVE-2023-52565 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 09635bf4cdd4adf2160198a6041bcc7ca46c0558, 8bcf70d787f7d53a3b85ad394f926cfef3eed023, 41ebaa5e0eebea4c3bac96b72f9f8ae0d77c0bdb 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 0.24% 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 09635bf4cdd4adf2160198a6041bcc7ca46c0558 or 8bcf70d787f7d53a3b85ad394f926cfef3eed023 or 41ebaa5e0eebea4c3bac96b72f9f8ae0d77c0bdb or 6.1.56, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.1.56 or 6.5.6, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 367703c3ec4f72208b8cae14310b8a2c955ec565 up to, but not including, 09635bf4cdd4adf2160198a6041bcc7ca46c0558; 40140eda661ea4be219ef194a4f43b7b5e3bbd27 up to, but not including, 8bcf70d787f7d53a3b85ad394f926cfef3eed023; 40140eda661ea4be219ef194a4f43b7b5e3bbd27 up to, but not including, 41ebaa5e0eebea4c3bac96b72f9f8ae0d77c0bdb; 42cbbc6b2c39b02e07cbd24dc2155d4edb99dd04; 6.1.16 up to, but not including, 6.1.56; 6.2.3 up to, but not including, 6.3; 6.3 | 09635bf4cdd4adf2160198a6041bcc7ca46c0558, 8bcf70d787f7d53a3b85ad394f926cfef3eed023, 41ebaa5e0eebea4c3bac96b72f9f8ae0d77c0bdb, 6.1.56, 6.3 |
| Linux | Linux Kernel | 6.1.16 up to, but not including, 6.1.56; 6.3 up to, but not including, 6.5.6; 6.6 | 6.1.56, 6.5.6 |
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: uvcvideo: Fix OOB read If the index provided by the user is bigger than the mask size, we might do an out of bound read.
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: partial).
- 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
- 7.5 High severity
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