SB2026070276 - Out-of-bounds read in Linux kernel display dc driver

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2026-53330)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local attacker to disclose sensitive information.

The vulnerability exists due to out-of-bounds read in dp_get_eq_aux_rd_interval() when processing DisplayPort repeater capability data. A local attacker can provide crafted repeater count information to trigger an out-of-bounds read and disclose sensitive information.

The issue occurs when a sink reports 8 LTTPR repeaters, causing access beyond the declared aux_rd_interval array bounds.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/454d3b3d499c18373f8960d31aea48338a3ca9e0
• https://git.kernel.org/stable/c/dc1490927d79fe9621e29f4a4f5d7b5ccb6aea3e
• https://git.kernel.org/stable/c/e8b4d37eba05141ee01794fc6b7f2da808cee83b