Linux: Out-of-bounds Read
CVE-2024-41935 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 e05d3eab90d6657bdcaa40ed129e9c767ed43188, 295b50e95e900da31ff237e46e04525fa799b2cf, 924f7dd1e832e4e4530d14711db223d2803f7b61 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 0.23% 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 e05d3eab90d6657bdcaa40ed129e9c767ed43188 or 295b50e95e900da31ff237e46e04525fa799b2cf or 924f7dd1e832e4e4530d14711db223d2803f7b61 or 3fc5d5a182f6a1f8bd4dc775feb54c369dd2c343, whichever matches your release line, or a later version.
- Update Linux Kernel to 6.6.66 or 6.12.5, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 up to, but not including, e05d3eab90d6657bdcaa40ed129e9c767ed43188; 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 up to, but not including, 295b50e95e900da31ff237e46e04525fa799b2cf; 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 up to, but not including, 924f7dd1e832e4e4530d14711db223d2803f7b61; 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 up to, but not including, 3fc5d5a182f6a1f8bd4dc775feb54c369dd2c343; 3.8 | e05d3eab90d6657bdcaa40ed129e9c767ed43188, 295b50e95e900da31ff237e46e04525fa799b2cf, 924f7dd1e832e4e4530d14711db223d2803f7b61, 3fc5d5a182f6a1f8bd4dc775feb54c369dd2c343 |
| Linux | Linux Kernel | 3.8 up to, but not including, 6.6.66; 6.7 up to, but not including, 6.12.5 | 6.6.66, 6.12.5 |
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.
Official description
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to shrink read extent node in batches We use rwlock to protect core structure data of extent tree during its shrink, however, if there is a huge number of extent nodes in extent tree, during shrink of extent tree, it may hold rwlock for a very long time, which may trigger kernel hang issue. This patch fixes to shrink read extent node in batches, so that, critical region of the rwlock can be shrunk to avoid its extreme long time hold.
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
Other references
Recent Out-of-bounds Read vulnerabilities
- 7.1 High severity
- 7.5 High severity
- 7.5 High severity
- 7.8 High severity
- 7.1 High severity
- 7.1 High severity
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