Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8e5100a575433cc185a2e224280fbd873b6692dd before a632474c793b7f2a9bbd3d8e3d0dd7d256989300; affected 8e5100a575433cc185a2e224280fbd873b6692dd before 7c5f2d16a8f4464bf2a719ceb2316b8a6b87a3c0; affected 8e5100a575433cc185a2e224280fbd873b6692dd before 454d3b3d499c18373f8960d31aea48338a3ca9e0; affected 8e5100a575433cc185a2e224280fbd873b6692dd before dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e; affected 8e5100a575433cc185a2e224280fbd873b6692dd before e8b4d37eba05141ee01794fc6b7f2da808cee83b |
| Linux / Linux | affected 5.6; unaffected 0 before 5.6; unaffected 6.6.160 through 6.6.*; unaffected 6.12.114 through 6.12.*; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
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