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CVE-2026-53136 is an out-of-bounds heap write vulnerability in the Linux kernel AMD display driver. The get_integrated_info_v11() and get_integrated_info_v2_1() functions process VBIOS integrated information tables v1_11 and v2_1, respectively. They use the unsigned eight-bit HdmiRegNum and Hdmi6GRegNum fields as loop bounds when copying HDMI retimer I2C register settings into fixed-size arrays containing nine and three entries. Because these counts are not validated, a malformed VBIOS can specify values up to 255 and cause writes beyond the destination arrays during driver probe. The fix clamps each count to its destination array size before copying.
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An array-bounds vulnerability involving the VBIOS HDMI retimer register count in the Linux kernel AMD display driver.
A heap out-of-bounds write vulnerability in the Linux kernel's AMD display driver affects the kernel package in Unity Linux 20. Unvalidated HDMI retimer register counts in malformed VBIOS tables can exceed fixed-size destination arrays during driver initialization. The reference assigns a CVSS v3 base score of 7.8, indicating high potential confidentiality, integrity, and availability impacts through a local attack requiring low privileges. The patch clamps register counts to destination array sizes in get_integrated_info_v11() and get_integrated_info_v2_1(). Nessus detects potentially affected installations using self-reported version information rather than testing exploitation.
A vulnerability covered by the Miracle Linux kernel package update. Individual technical details and exploit availability are not specified.
A locally exploitable vulnerability requiring low privileges, with high confidentiality, integrity, and availability impact, addressed by Miracle Linux AXSA-2026-1750.
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Cross-references every affected SKU, including bundled OEM variants.
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