Linux: Out-of-bounds Read
CVE-2024-47721 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 10463308b9454f534d03300cf679bc4b3d078f46, 2c9c2d1a20916589497a7facbea3e82cabec4ab8, 56310ddb50b190b3390fdc974aec455d0a516bd2 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 0.32% 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 10463308b9454f534d03300cf679bc4b3d078f46 or 2c9c2d1a20916589497a7facbea3e82cabec4ab8 or 56310ddb50b190b3390fdc974aec455d0a516bd2, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.10.13 or 6.11.2, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | ff53fce5c78ba27ec7eb0baff7ef9648fde7ad8e up to, but not including, 10463308b9454f534d03300cf679bc4b3d078f46; ff53fce5c78ba27ec7eb0baff7ef9648fde7ad8e up to, but not including, 2c9c2d1a20916589497a7facbea3e82cabec4ab8; ff53fce5c78ba27ec7eb0baff7ef9648fde7ad8e up to, but not including, 56310ddb50b190b3390fdc974aec455d0a516bd2; 6.10 | 10463308b9454f534d03300cf679bc4b3d078f46, 2c9c2d1a20916589497a7facbea3e82cabec4ab8, 56310ddb50b190b3390fdc974aec455d0a516bd2 |
| Linux | Linux Kernel | 6.10 up to, but not including, 6.10.13; 6.11 up to, but not including, 6.11.2 | 6.10.13, 6.11.2 |
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 | 8.8 | High | CNA |
| CVSS 3.1 | 7.1 | High | NVD |
Official description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: remove unused C2H event ID RTW89_MAC_C2H_FUNC_READ_WOW_CAM to prevent out-of-bounds reading The handler of firmware C2H event RTW89_MAC_C2H_FUNC_READ_WOW_CAM isn't implemented, but driver expects number of handlers is NUM_OF_RTW89_MAC_C2H_FUNC_WOW causing out-of-bounds access. Fix it by removing ID. Addresses-Coverity-ID: 1598775 ("Out-of-bounds 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
- 7.1 High severity
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