PT-2024-1994 · Linux+7 · Linux Kernel+7
Jiri Olsa
·
Published
2024-01-04
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Updated
2025-09-29
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CVE-2024-26591
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a null pointer dereference in the
bpf tracing prog attach function. This can occur when a specific sequence of events happens, including loading a rawtp program, loading a fentry program with rawtp as the target fd, creating a tracing link for the fentry program with target fd = 0, and repeating this process. The result is a kernel crash due to the null pointer dereference. The technical details involve the prog->aux->dst trampoline being NULL, tgt prog being NULL because no target fd was provided to link create, and prog->aux->attach btf being NULL because the program was loaded with attach prog fd=X. The exact impact and the number of potentially affected devices are not specified.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Linux Kernel
Red Hat
Red Os
Suse
Ubuntu