CVE-2024-35905

bpf: Protect against int overflow for stack access size

State: Published
Severity: 7.8 High
Published: May 19, 2024
Updated: Oct 15, 2026
Reserved: May 17, 2024

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	afea95d319ccb4ad2060dece9ac5e2e364dec543 to before 9970e059af471478455f9534e8c3db82f8c5496dAffected 02962684258eb53f414a8a59854767be526e6abb to before 37dc1718dc0c4392dbfcb9adec22a776e745dd69Affected b1d4d54d32ce6342f5faffe71bae736540ce7cb5 to before 98cdac206b112bec63852e94802791e316acc2c1Affected 08b91babccbb168353f8d43fea0ed28a4cad568c to before 3f0784b2f1eb9147973d8c43ba085c5fdf44ff69Affected a833a17aeac73b33f79433d7cee68d5cafd71e4f to before 203a68151e8eeb331d4a64ab78303f3a15faf103Affected a833a17aeac73b33f79433d7cee68d5cafd71e4f to before ecc6a2101840177e57c925c102d2d29f260d37c8Affected 1858b8a331937f3976d8482cd5f6e1f945294ad3Affected 5.10.209 to before 5.10.215Affected 5.15.148 to before 5.15.154Affected 6.1.75 to before 6.1.85Affected 6.6.14 to before 6.6.26Affected 6.7.2 to before 6.8Affected
LinuxLinux	6.8Affected before 6.8Not affected 5.10.215 through 5.10.Not affected 5.15.154 through 5.15.Not affected 6.1.85 through 6.1.Not affected 6.6.26 through 6.6.Not affected 6.8.5 through 6.8.*Not affected 6.9 and laterNot affected

Product

Versions

LinuxLinux

afea95d319ccb4ad2060dece9ac5e2e364dec543 to before 9970e059af471478455f9534e8c3db82f8c5496dAffected
02962684258eb53f414a8a59854767be526e6abb to before 37dc1718dc0c4392dbfcb9adec22a776e745dd69Affected
b1d4d54d32ce6342f5faffe71bae736540ce7cb5 to before 98cdac206b112bec63852e94802791e316acc2c1Affected
08b91babccbb168353f8d43fea0ed28a4cad568c to before 3f0784b2f1eb9147973d8c43ba085c5fdf44ff69Affected
a833a17aeac73b33f79433d7cee68d5cafd71e4f to before 203a68151e8eeb331d4a64ab78303f3a15faf103Affected
a833a17aeac73b33f79433d7cee68d5cafd71e4f to before ecc6a2101840177e57c925c102d2d29f260d37c8Affected
1858b8a331937f3976d8482cd5f6e1f945294ad3Affected
5.10.209 to before 5.10.215Affected
5.15.148 to before 5.15.154Affected
6.1.75 to before 6.1.85Affected
6.6.14 to before 6.6.26Affected
6.7.2 to before 6.8Affected

LinuxLinux

6.8Affected
before 6.8Not affected
5.10.215 through 5.10.*Not affected
5.15.154 through 5.15.*Not affected
6.1.85 through 6.1.*Not affected
6.6.26 through 6.6.*Not affected
6.8.5 through 6.8.*Not affected
6.9 and laterNot affected

References

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