Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval() [Why & How] The aux_rd_interval array in struct dc_lttpr_caps is declared with MAX_REPEATER_CNT - 1 (7) elements, indexed 0..6. However, the offset parameter passed to dp_get_eq_aux_rd_interval() can be as large as MAX_REPEATER_CNT (8) when a sink reports 8 LTTPR repeaters via DPCD. This leads to an out-of-bounds read of aux_rd_interval[7] when offset is 8. Fix this by growing aux_rd_interval to MAX_REPEATER_CNT elements to accommodate the full range of valid repeater counts defined by the DP spec. (cherry picked from commit a55a458a8df37a65ffda5cf721d554a8f74f6b04)
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
8e5100a575433cc185a2e224280fbd873b6692dd to < a632474c793b7f2a9bbd3d8e3d0dd7d256989300affected8e5100a575433cc185a2e224280fbd873b6692dd to < 7c5f2d16a8f4464bf2a719ceb2316b8a6b87a3c0affected8e5100a575433cc185a2e224280fbd873b6692dd to < 454d3b3d499c18373f8960d31aea48338a3ca9e0affected8e5100a575433cc185a2e224280fbd873b6692dd to < dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3eaffected8e5100a575433cc185a2e224280fbd873b6692dd to < e8b4d37eba05141ee01794fc6b7f2da808cee83baffected
Linux Linux
Default version status: affected
5.6affected0 to < 5.6unaffected6.6.160 to ≤ 6.6.*unaffected6.12.114 to ≤ 6.12.*unaffected6.18.36 to ≤ 6.18.*unaffected7.0.13 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/a632474c793b7f2a9bbd3d8e3d0dd7d256989300 ↗
- https://git.kernel.org/stable/c/7c5f2d16a8f4464bf2a719ceb2316b8a6b87a3c0 ↗
- https://git.kernel.org/stable/c/454d3b3d499c18373f8960d31aea48338a3ca9e0 ↗
- https://git.kernel.org/stable/c/dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e ↗
- https://git.kernel.org/stable/c/e8b4d37eba05141ee01794fc6b7f2da808cee83b ↗