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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)

PUBLISHED Reserved 2026-06-09 | Published 2026-07-01 | Updated 2026-07-10 | Assigner Linux

Product status

Default status
unaffected

8e5100a575433cc185a2e224280fbd873b6692dd (git) before 454d3b3d499c18373f8960d31aea48338a3ca9e0
affected

8e5100a575433cc185a2e224280fbd873b6692dd (git) before dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e
affected

8e5100a575433cc185a2e224280fbd873b6692dd (git) before e8b4d37eba05141ee01794fc6b7f2da808cee83b
affected

Default status
affected

5.6
affected

Any version before 5.6
unaffected

6.18.36 (semver)
unaffected

7.0.13 (semver)
unaffected

7.1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/454d3b3d499c18373f8960d31aea48338a3ca9e0

git.kernel.org/...c/dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e

git.kernel.org/...c/e8b4d37eba05141ee01794fc6b7f2da808cee83b

cve.org (CVE-2026-53330)

nvd.nist.gov (CVE-2026-53330)

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