How severe is CVE-2024-49850?

This vulnerability has a severity rating of MEDIUM with a CVSS score of 5.5 out of 10.

What type of vulnerability is CVE-2024-49850?

This is classified as CWE-476, which is a common weakness in software security.

CVE-2024-49850 - MEDIUM Severity | CVSS 5.5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: bpf: correctly handle malformed BPF_CORE_TYPE_ID_LOCAL relos In case of malformed relocation record of kind BPF_CORE_TYPE_ID_LOCAL referencing a non-existing BTF type, function bpf_core_calc_relo_insn would cause a null pointer deference. Fix this by adding a proper check upper in call stack, as malformed relocation records could be passed from user space. Simplest reproducer is a program: r0 = 0 exit With a single relocation record: .insn_off = 0, /* patch first instruction */ .type_id = 100500, /* this type id does not exist */ .access_str_off = 6, /* offset of string "0" */ .kind = BPF_CORE_TYPE_ID_LOCAL, See the link for original reproducer or next commit for a test case.

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