What’s Vulnerable › Vulnerabilities
CVE-2024-26811: ksmbd: validate payload size in ipc response
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.8% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-04-08 · updated 2026-08-04
- Weakness: CWE-787
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate payload size in ipc response If installing malicious ksmbd-tools, ksmbd.mountd can return invalid ipc response to ksmbd kernel server. ksmbd should validate payload size of ipc response from ksmbd.mountd to avoid memory overrun or slab-out-of-bounds. This patch validate 3 ipc response that has payload.
Affected products
- Linux kernel: before 6.9; 6.9, 6.9-rc1, 6.9-rc2 — fixed in 6.9
How to fix
Upgrade to a fixed version: Linux kernel 6.9. Check the vendor advisory for mitigations.
References
- https://git.kernel.org/stable/c/51a6c2af9d20203ddeeaf73314ba8854b38d01bd
- https://git.kernel.org/stable/c/76af689a45aa44714b46d1a7de4ffdf851ded896
- https://git.kernel.org/stable/c/88b7f1143b15b29cccb8392b4f38e75b7bb3e300
- https://git.kernel.org/stable/c/a637fabac554270a851033f5ab402ecb90bc479c
- https://git.kernel.org/stable/c/a677ebd8ca2f2632ccdecbad7b87641274e15aac
- https://git.kernel.org/stable/c/51a6c2af9d20203ddeeaf73314ba8854b38d01bd
- https://git.kernel.org/stable/c/76af689a45aa44714b46d1a7de4ffdf851ded896
- https://git.kernel.org/stable/c/88b7f1143b15b29cccb8392b4f38e75b7bb3e300
- https://git.kernel.org/stable/c/a637fabac554270a851033f5ab402ecb90bc479c
- https://git.kernel.org/stable/c/a677ebd8ca2f2632ccdecbad7b87641274e15aac
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6XCNJZBDMGJXRIKLGKM4RRJU4XCHPX62/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LG6L4FXO4WNWUM6W7USOH2YTRVWREM3V/
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