CVEvulnerability

CVE-2024-35962

5.5 MEDIUM Published 2024-05-20 Modified 2026-10-15 Official page ↗
Status
Modified
Published
2024-05-20
Last modified
2026-10-15
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
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

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: complete validation of user input In my recent commit, I missed that do_replace() handlers use copy_from_sockptr() (which I fixed), followed by unsafe copy_from_sockptr_offset() calls. In all functions, we can perform the @optlen validation before even calling xt_alloc_table_info() with the following check: if ((u64)optlen < (u64)tmp.size + sizeof(tmp)) return -EINVAL;

Affected configurations

• linux linux kernel (>= 5.15.154 < 5.15.156) • linux linux kernel (>= 6.1.85 < 6.1.87) • linux linux kernel (>= 6.6.26 < 6.6.28) • linux linux kernel (>= 6.8.5 < 6.8.7) • linux linux kernel 5.10.215 • linux linux kernel 6.9 • debian debian linux 10.0

References