CVE-2024-26736: afs: Increase buffer size in afs_update_volume_status()
In the Linux kernel, the following vulnerability has been resolved:
afs: Increase buffer size in afsupdatevolumestatus()
The max length of volume->vid value is 20 characters. So increase idbuf[] size up to 24 to avoid overflow.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[DH: Actually, it's 20 + NUL, so increase it to 24 and use snprintf()]
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.27-1 - Configuration
Update the Linux kernel code for afs_update_volume_status() to increase the idbuf[] buffer size up to 24 to avoid overflow (since volume->vid max length is 20 characters including NUL) and use snprintf().
Linux kernel (AFS) afs_update_volume_status() idbuf[] buffer size = increase to 24 (20 + NUL) and use snprintf()
Event History
Frequently Asked Questions
What is the severity of CVE-2024-26736?
CVE-2024-26736 is classified as a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2024-26736?
To fix CVE-2024-26736, update your Linux kernel package to version 5.10.223-1, 5.10.226-1, 6.1.119-1, 6.1.123-1, 6.12.10-1, or 6.12.11-1.
What is the impact of CVE-2024-26736?
The impact of CVE-2024-26736 can lead to a buffer overflow in the AFS module within the Linux kernel.
Which Linux kernel versions are affected by CVE-2024-26736?
CVE-2024-26736 affects multiple versions of the Linux kernel prior to the fixed releases mentioned.
Who discovered CVE-2024-26736?
CVE-2024-26736 was discovered by the Linux Verification Center.