PT-2024-6771 · Linux+10 · Linux Kernel+10
Janusz Krzysztofik
·
Published
2024-06-24
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Updated
2025-09-29
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CVE-2024-41092
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.9.0
Description
The issue is related to a potential use-after-free (UAF) vulnerability in the Linux kernel's drm/i915/gt module. The vulnerability can be triggered by a race condition between the revocation of fence registers and the sequential execution of signal callbacks invoked on completion of a request that was using them. This can lead to a kernel bug and potentially allow an attacker to elevate their privileges. The vulnerability is caused by a missing wait for idleness of
vma->fence->active in the i915 vma revoke fence() function.Recommendations
To resolve the issue, update the Linux kernel to a version that includes the fix for the vulnerability, which involves waiting for idleness of
vma->fence->active in the i915 vma revoke fence() function. As a temporary workaround, consider disabling the i915 vma revoke fence() function until a patch is available. However, this may have performance implications and should be carefully evaluated before implementation.At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu