CVE-2024-35905
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2024-35905
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2024-35905.html
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/ecc6a2101840177e57c925c102d2d29f260d37c8
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/9970e059af471478455f9534e8c3db82f8c5496d
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/98cdac206b112bec63852e94802791e316acc2c1
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/3f0784b2f1eb9147973d8c43ba085c5fdf44ff69
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/37dc1718dc0c4392dbfcb9adec22a776e745dd69
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/203a68151e8eeb331d4a64ab78303f3a15faf103
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2024:9315
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.1.85-1 |
| debian | bullseye | fixed | 5.10.216-1 |
| debian | forky | fixed | 6.8.9-1 |
| debian | sid | fixed | 6.8.9-1 |
| debian | trixie | fixed | 6.8.9-1 |
| debian | 10.0 | affected | |
| linux-kernel | affected | 5.10.215 | |
| linux-kernel | 6.9 | affected | |
References
- https://access.redhat.com/errata/RHSA-2024:9315
- https://git.kernel.org/stable/c/203a68151e8eeb331d4a64ab78303f3a15faf103
- https://git.kernel.org/stable/c/37dc1718dc0c4392dbfcb9adec22a776e745dd69
- https://git.kernel.org/stable/c/3f0784b2f1eb9147973d8c43ba085c5fdf44ff69
- https://git.kernel.org/stable/c/98cdac206b112bec63852e94802791e316acc2c1
- https://git.kernel.org/stable/c/9970e059af471478455f9534e8c3db82f8c5496d
- 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
- https://www.suse.com/security/cve/CVE-2024-35905.html
- https://security-tracker.debian.org/tracker/CVE-2024-35905
CWEs
CWE-129 CWE-190
Verify integrity in audit chain (admin only). AS-IS.