CVE-2024-35905 | BDVDB-2026-236489 Detail
LinuxLinux
Description#
In the Linux kernel, the following vulnerability has been resolved: bpf: Protect against int overflow for stack access size This patch re-introduces protection against the size of access to stack memory being negative; the access size can appear negative as a result of overflowing its signed int representation. This should not actually happen, as there are other protections along the way, but we should protect against it anyway. One code path was missing such protections (fixed in the previous patch in the series), causing out-of-bounds array accesses in check_stack_range_initialized(). This patch causes the verification of a program with such a non-sensical access size to fail. This check used to exist in a more indirect way, but was inadvertendly removed in a833a17aeac7.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/9970e059af471478455f9534e8c3db82f8c5496d
- https://git.kernel.org/stable/c/37dc1718dc0c4392dbfcb9adec22a776e745dd69
- https://git.kernel.org/stable/c/98cdac206b112bec63852e94802791e316acc2c1
- https://git.kernel.org/stable/c/3f0784b2f1eb9147973d8c43ba085c5fdf44ff69
- https://git.kernel.org/stable/c/203a68151e8eeb331d4a64ab78303f3a15faf103
- https://git.kernel.org/stable/c/ecc6a2101840177e57c925c102d2d29f260d37c8
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.