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CVE-2024-26695

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix null pointer dereference in __sev_platform_shutdown_locked The SEV platform device can be shutdown with a nul…

Published Apr 3, 2024CWE-476EPSS 0.24%

Overview

CVE-2024-26695 is a medium-severity vulnerability. It was published on April 3, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

crypto: ccp - Fix null pointer dereference in __sev_platform_shutdown_locked

The SEV platform device can be shutdown with a null psp_master,

e.g., using DEBUG_TEST_DRIVER_REMOVE. Found using KASAN:

[ 137.148210] ccp 0000:23:00.1: enabling device (0000 -> 0002)

[ 137.162647] ccp 0000:23:00.1: no command queues available

[ 137.170598] ccp 0000:23:00.1: sev enabled

[ 137.174645] ccp 0000:23:00.1: psp enabled

[ 137.178890] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC KASAN NOPTI

[ 137.182693] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7]

[ 137.182693] CPU: 93 PID: 1 Comm: swapper/0 Not tainted 6.8.0-rc1+ #311

[ 137.182693] RIP: 0010:__sev_platform_shutdown_locked+0x51/0x180

[ 137.182693] Code: 08 80 3c 08 00 0f 85 0e 01 00 00 48 8b 1d 67 b6 01 08 48 b8 00 00 00 00 00 fc ff df 48 8d bb f0 00 00 00 48 89 f9 48 c1 e

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/58054faf3bd29cd0b949b77efcb6157f66f401edRefgit.kernel.org/stable/c/7535ec350a5f09b5756a7607f5582913f21200f4Refgit.kernel.org/stable/c/8731fe001a60581794ed9cf65da8cd304846a6fbRefgit.kernel.org/stable/c/88aa493f393d2ee38ac140e1f6ac1881346e85d4Refgit.kernel.org/stable/c/b5909f197f3b26aebedca7d8ac7b688fd993a266Refgit.kernel.org/stable/c/ccb88e9549e7cfd8bcd511c538f437e20026e983Refgit.kernel.org/stable/c/58054faf3bd29cd0b949b77efcb6157f66f401edRefgit.kernel.org/stable/c/7535ec350a5f09b5756a7607f5582913f21200f4Refgit.kernel.org/stable/c/8731fe001a60581794ed9cf65da8cd304846a6fbRefgit.kernel.org/stable/c/88aa493f393d2ee38ac140e1f6ac1881346e85d4

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26695?

CVE-2024-26695 is a medium-severity vulnerability. It was published on April 3, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26695?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-26695?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-26695?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26695 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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