Linux: Out-of-bounds Read
CVE-2024-36960 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 2f527e3efd37c7c5e85e8aa86308856b619fa59f, cef0962f2d3e5fd0660c8efb72321083a1b531a9, 3cd682357c6167f636aec8ac0efaa8ba61144d36 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 0.29% 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 2f527e3efd37c7c5e85e8aa86308856b619fa59f or cef0962f2d3e5fd0660c8efb72321083a1b531a9 or 3cd682357c6167f636aec8ac0efaa8ba61144d36 or b7bab33c4623c66e3398d5253870d4e88c52dfc0, whichever matches your release line, or a later version.
- Update Linux Kernel to 4.19.314 or 5.4.276 or 5.10.217 or 5.15.159, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 8b7de6aa84682a3396544fd88cd457f95484573a up to, but not including, 2f527e3efd37c7c5e85e8aa86308856b619fa59f; 8b7de6aa84682a3396544fd88cd457f95484573a up to, but not including, cef0962f2d3e5fd0660c8efb72321083a1b531a9; 8b7de6aa84682a3396544fd88cd457f95484573a up to, but not including, 3cd682357c6167f636aec8ac0efaa8ba61144d36; 8b7de6aa84682a3396544fd88cd457f95484573a up to, but not including, b7bab33c4623c66e3398d5253870d4e88c52dfc0; 8b7de6aa84682a3396544fd88cd457f95484573a up to, but not including, 0dbfc73670b357456196130551e586345ca48e1b; 8b7de6aa84682a3396544fd88cd457f95484573a up to, but not including, 7b5fd3af4a250dd0a2a558e07b43478748eb5d22; 8b7de6aa84682a3396544fd88cd457f95484573a up to, but not including, deab66596dfad14f1c54eeefdb72428340d72a77; 8b7de6aa84682a3396544fd88cd457f95484573a up to, but not including, a37ef7613c00f2d72c8fc08bd83fb6cc76926c8c; and 1 more ranges | 2f527e3efd37c7c5e85e8aa86308856b619fa59f, cef0962f2d3e5fd0660c8efb72321083a1b531a9, 3cd682357c6167f636aec8ac0efaa8ba61144d36, b7bab33c4623c66e3398d5253870d4e88c52dfc0, 0dbfc73670b357456196130551e586345ca48e1b, 7b5fd3af4a250dd0a2a558e07b43478748eb5d22 |
| Linux | Linux Kernel | 3.4 up to, but not including, 4.19.314; 4.20 up to, but not including, 5.4.276; 5.5 up to, but not including, 5.10.217; 5.11 up to, but not including, 5.15.159; 5.16 up to, but not including, 6.1.91; 6.2 up to, but not including, 6.6.31; 6.7 up to, but not including, 6.8.10; 6.9 | 4.19.314, 5.4.276, 5.10.217, 5.15.159, 6.1.91, 6.6.31 |
| Debian | Debian Linux | 10.0 | 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
- 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: drm/vmwgfx: Fix invalid reads in fence signaled events Correctly set the length of the drm_event to the size of the structure that's actually used. The length of the drm_event was set to the parent structure instead of to the drm_vmw_event_fence which is supposed to be read. drm_read uses the length parameter to copy the event to the user space thus resuling in oob reads.
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
- git.kernel.org/stable/c/0dbfc73670b357456196130551e586345ca48e1b
- git.kernel.org/stable/c/2f527e3efd37c7c5e85e8aa86308856b619fa59f
- git.kernel.org/stable/c/3cd682357c6167f636aec8ac0efaa8ba61144d36
- git.kernel.org/stable/c/7b5fd3af4a250dd0a2a558e07b43478748eb5d22
- git.kernel.org/stable/c/a37ef7613c00f2d72c8fc08bd83fb6cc76926c8c
- git.kernel.org/stable/c/b7bab33c4623c66e3398d5253870d4e88c52dfc0
- git.kernel.org/stable/c/cef0962f2d3e5fd0660c8efb72321083a1b531a9
- git.kernel.org/stable/c/deab66596dfad14f1c54eeefdb72428340d72a77
Third-party and government advisories
- lists.debian.org/debian-lts-announce/2024/06/msg00019.htmlMailing List, Third Party Advisory
- lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
Recent Out-of-bounds Read vulnerabilities
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
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