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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
afea95d319ccb4ad2060dece9ac5e2e364dec543 to < 9970e059af471478455f9534e8c3db82f8c5496daffected02962684258eb53f414a8a59854767be526e6abb to < 37dc1718dc0c4392dbfcb9adec22a776e745dd69affectedb1d4d54d32ce6342f5faffe71bae736540ce7cb5 to < 98cdac206b112bec63852e94802791e316acc2c1affected08b91babccbb168353f8d43fea0ed28a4cad568c to < 3f0784b2f1eb9147973d8c43ba085c5fdf44ff69affecteda833a17aeac73b33f79433d7cee68d5cafd71e4f to < 203a68151e8eeb331d4a64ab78303f3a15faf103affecteda833a17aeac73b33f79433d7cee68d5cafd71e4f to < ecc6a2101840177e57c925c102d2d29f260d37c8affected1858b8a331937f3976d8482cd5f6e1f945294ad3affected5.10.209 to < 5.10.215affected5.15.148 to < 5.15.154affected6.1.75 to < 6.1.85affected6.6.14 to < 6.6.26affected6.7.2 to < 6.8affected
Linux Linux
Default version status: affected
6.8affected0 to < 6.8unaffected5.10.215 to ≤ 5.10.*unaffected5.15.154 to ≤ 5.15.*unaffected6.1.85 to ≤ 6.1.*unaffected6.6.26 to ≤ 6.6.*unaffected6.8.5 to ≤ 6.8.*unaffected6.9 to ≤ *unaffected
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 ↗