CVE-2024-38574 (GCVE-0-2024-38574)

Vulnerability from cvelistv5 – Published: 2024-06-19 13:35 – Updated: 2025-05-04 09:14
VLAI?
Title
libbpf: Prevent null-pointer dereference when prog to load has no BTF
Summary
In the Linux kernel, the following vulnerability has been resolved: libbpf: Prevent null-pointer dereference when prog to load has no BTF In bpf_objec_load_prog(), there's no guarantee that obj->btf is non-NULL when passing it to btf__fd(), and this function does not perform any check before dereferencing its argument (as bpf_object__btf_fd() used to do). As a consequence, we get segmentation fault errors in bpftool (for example) when trying to load programs that come without BTF information. v2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e , < ef80b59acfa4dee4b5eaccb15572b69248831104 (git)
Affected: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e , < 1fd91360a75833b7110af9834ae26c977e1273e0 (git)
Affected: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e , < 9bf48fa19a4b1d186e08b20bf7e5de26a15644fb (git)
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    Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.8.12 , ≤ 6.8.* (semver)
Unaffected: 6.9.3 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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