CVE-2024-26811 ksmbd: validate payload size in ipc response

What is CVE-2024-26811?

CVE-2024-26811 is a critical memory corruption vulnerability in Linux kernel, published on 8 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-787

Which versions are affected by CVE-2024-26811?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-26811?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2024-26811 being exploited?

There is no known exploitation of CVE-2024-26811 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-59255, AZL-59267, BELL-CVE-2024-26811, DEBIAN-CVE-2024-26811, GHSA-cq2v-6q97-jv69, UBUNTU-CVE-2024-26811.