CVEvulnerability

CVE-2021-29648

5.5 MEDIUM Published 2021-03-30 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C
Weaknesses
CWE-307

Description

An issue was discovered in the Linux kernel before 5.11.11. The BPF subsystem does not properly consider that resolved_ids and resolved_sizes are intentionally uninitialized in the vmlinux BPF Type Format (BTF), which can cause a system crash upon an unexpected access attempt (in map_create in kernel/bpf/syscall.c or check_btf_info in kernel/bpf/verifier.c), aka CID-350a5c4dd245.

Affected configurations

• linux linux kernel (< 5.11.11) • fedoraproject fedora 32 • fedoraproject fedora 33 • fedoraproject fedora 34

Related

Weakness · CWE (1)

  • CWE-307 Improper Restriction of Excessive Authentication Attempts weakness

References