CVE-2024-26791

HIGH
Published Apr 4, 2024 Modified Dec 20, 2024 CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: dev-replace: properly validate device names There's a syzbot report that device name buffers passed to device replace are not properly checked for string termination which could lead to a read out of bounds in getname_kernel(). Add a helper that validates both source and target device name buffers. For devid as the source initialize the buffer to empty string in case something tries to read it later. This was originally analyzed and fixed in a different way by Edward Adam Davis (see links).

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CVSS v3.1 Score

7.1
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/11d7a2e429c02d51e2dc90713823ea8b8d3d3a84 https://git.kernel.org/stable/c/2886fe308a83968dde252302884a1e63351cf16d https://git.kernel.org/stable/c/343eecb4ff49a7b1cc1dfe86958a805cf2341cfb https://git.kernel.org/stable/c/9845664b9ee47ce7ee7ea93caf47d39a9d4552c4 https://git.kernel.org/stable/c/ab2d68655d0f04650bef09fee948ff80597c5fb9 https://git.kernel.org/stable/c/b1690ced4d2d8b28868811fb81cd33eee5aefee1 https://git.kernel.org/stable/c/c6652e20d7d783d060fe5f987eac7b5cabe31311 https://git.kernel.org/stable/c/f590040ce2b712177306b03c2a63b16f7d48d3c8 https://git.kernel.org/stable/c/11d7a2e429c02d51e2dc90713823ea8b8d3d3a84 https://git.kernel.org/stable/c/2886fe308a83968dde252302884a1e63351cf16d https://git.kernel.org/stable/c/343eecb4ff49a7b1cc1dfe86958a805cf2341cfb https://git.kernel.org/stable/c/9845664b9ee47ce7ee7ea93caf47d39a9d4552c4 https://git.kernel.org/stable/c/ab2d68655d0f04650bef09fee948ff80597c5fb9 https://git.kernel.org/stable/c/b1690ced4d2d8b28868811fb81cd33eee5aefee1 https://git.kernel.org/stable/c/c6652e20d7d783d060fe5f987eac7b5cabe31311 https://git.kernel.org/stable/c/f590040ce2b712177306b03c2a63b16f7d48d3c8 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

Frequently Asked Questions

What is CVE-2024-26791? +
In the Linux kernel, the following vulnerability has been resolved: btrfs: dev-replace: properly validate device names There's a syzbot report that device name buffers passed to device replace are not properly checked for string termination which could lead to a read out of bounds in getname_kernel(). Add a helper that validates both source and target device name buffers. For devid as the source initialize the buffer to empty string in case something tries to read it later. This was originally analyzed and fixed in a different way by Edward Adam Davis (see links). It has a CVSS v3.1 base score of 7.1 (HIGH).
How severe is CVE-2024-26791? +
CVE-2024-26791 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-26791? +
CVE-2024-26791 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26791? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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