CVE-2024-26952: ksmbd: fix potencial out-of-bounds when buffer offset is invalid
First published: Wed May 01 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potencial out-of-bounds when buffer offset is invalid I found potencial out-of-bounds when buffer offset fields of a few requests is invalid. This patch set the minimum value of buffer offset field to ->Buffer offset to validate buffer length.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <6.7.12 | |
| Linux Kernel | >6.8<6.8.3 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.10-1 6.12.11-1 | |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/0c5541b4c980626fa3cab16ba1a451757778bbb5
- https://git.kernel.org/stable/c/2dcda336b6e80b72d58d30d40f2fad9724e5fe63
- https://git.kernel.org/stable/c/39bdc4197acf2ed13269167ccf093ee28cfa2a4e
- https://git.kernel.org/stable/c/c6cd2e8d2d9aa7ee35b1fa6a668e32a22a9753da
- https://launchpad.net/bugs/cve/CVE-2024-26952
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26952
- https://nvd.nist.gov/vuln/detail/CVE-2024-26952
- https://security-tracker.debian.org/tracker/CVE-2024-26952
- https://ubuntu.com/security/CVE-2024-26952
- https://git.kernel.org/stable/c/ad6480c9a5d884e2704adc51d69895d93339176c
- https://git.kernel.org/linus/c6cd2e8d2d9aa7ee35b1fa6a668e32a22a9753da
Frequently Asked Questions
What is the severity of CVE-2024-26952?
CVE-2024-26952 is classified as a medium-severity vulnerability due to the potential for out-of-bounds access in the Linux kernel's ksmbd module.
How do I fix CVE-2024-26952?
To fix CVE-2024-26952, update your Linux kernel to version 6.7.12 or later, or apply patches from your respective Linux distribution.
Which Linux kernel versions are affected by CVE-2024-26952?
CVE-2024-26952 affects Linux kernel versions prior to 6.7.12 and between 6.8.0 and 6.8.3.
What components are impacted by CVE-2024-26952?
CVE-2024-26952 specifically impacts the ksmbd module within the Linux kernel, related to buffer offset handling.
Is CVE-2024-26952 exploitable in any scenario?
Yes, if exploited, CVE-2024-26952 may allow an attacker to trigger out-of-bounds memory access, potentially leading to denial of service or other impacts.
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