Advisory [CVE-2026-64209] Fix out-of-bounds array access in dp swing config
This security Red Hat Linux advisory covers CVE-2026-64209.
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Summary
In the Linux kernel, the following vulnerability has been resolved: phy: qcom: qmp-usbc: Fix out-of-bounds array access in dp swing config swing_tbl and pre_emphasis_tbl are 4x4 arrays (valid indices 0-3), but the boundary check uses "> 4" instead of ">= 4", allowing index 4 to cause an out-of-bounds access.
A flaw was found in the Linux kernel, specifically within the Qualcomm (QCOM) QMP USBC PHY (Physical Layer) driver. An incorrect boundary check during the configuration of DisplayPort (DP) swing settings allows for an out-of-bounds array access.
This vulnerability can lead to memory corruption, potentially impacting system stability or allowing for further exploitation. Red Hat severity: not rated.
Weakness: CWE-787. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 13 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 13 days ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 13 days ago·verify at source
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