Description
In the Linux kernel, the following vulnerability has been resolved: drm/komeda: fix integer overflow in AFBC framebuffer size check The AFBC framebuffer size validation calculates the minimum required buffer size by adding the AFBC payload size to the framebuffer offset. This addition is performed without checking for integer overflow. If the addition oveflows, the size check may incorrectly succed and allow userspace to provide an undersized drm_gem_object, potentially leading to out-of-bounds memory access. Add usage of check_add_overflow() to safely compute the minimum required size and reject the framebuffer if an overflow is detected. This makes the AFBC size validation more robust against malformed. Found by Linux Verification Center (linuxtesting.org) with SVACE.
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
65ad2392dd6d1691db93e82b08d3311298b9d64a to < a3a2a9bdc0f9c2d863a5a290cb2d4a565f7268e7affected65ad2392dd6d1691db93e82b08d3311298b9d64a to < e27b58095d7d3ac72f230e318838dee956258460affected65ad2392dd6d1691db93e82b08d3311298b9d64a to < 02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583affected65ad2392dd6d1691db93e82b08d3311298b9d64a to < d8a541906860aa3519b1874780d933c766918a7caffected65ad2392dd6d1691db93e82b08d3311298b9d64a to < 8165e8b28fdf392c2c7412518d602b4f193812a8affected65ad2392dd6d1691db93e82b08d3311298b9d64a to < fe1f80f8f6e8611ac6349b9d464e8750443390cfaffected65ad2392dd6d1691db93e82b08d3311298b9d64a to < 872d923b852705054bc099af663da862fdc1097daffected65ad2392dd6d1691db93e82b08d3311298b9d64a to < 779ec12c85c9e4547519e3903a371a3b26a289deaffected
Linux Linux
Default version status: affected
5.3affected0 to < 5.3unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.141 to ≤ 6.6.*unaffected6.12.91 to ≤ 6.12.*unaffected6.18.33 to ≤ 6.18.*unaffected7.0.10 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/a3a2a9bdc0f9c2d863a5a290cb2d4a565f7268e7 ↗
- https://git.kernel.org/stable/c/e27b58095d7d3ac72f230e318838dee956258460 ↗
- https://git.kernel.org/stable/c/02ff8a7d3d0eecc546b9ab4c07b3d7c65d485583 ↗
- https://git.kernel.org/stable/c/d8a541906860aa3519b1874780d933c766918a7c ↗
- https://git.kernel.org/stable/c/8165e8b28fdf392c2c7412518d602b4f193812a8 ↗
- https://git.kernel.org/stable/c/fe1f80f8f6e8611ac6349b9d464e8750443390cf ↗
- https://git.kernel.org/stable/c/872d923b852705054bc099af663da862fdc1097d ↗
- https://git.kernel.org/stable/c/779ec12c85c9e4547519e3903a371a3b26a289de ↗