CVE-2026-72362

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/pt: Fix NULL pointer dereference in xe_pt_zap_ptes_entry()

The page-table walk framework may pass a NULL *child pointer for unpopulated entries. xe_pt_zap_ptes_entry() called container_of(*child) before checking for NULL, then dereferenced the result, causing a crash.

Move the container_of() call after a NULL guard, so the function returns early instead of proceeding with an invalid pointer. XE_WARN_ON is kept to help root cause the issue, but we now bail instead of crashing the driver.

v2: Comment that triggering XE_WARN_ON is unexpected behavior (Matt Brost)

(cherry picked from commit b9297d19d9df5d4b6c994648570c5dcd1cac68ff)

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxdd08ebf6c3525a7ea2186e636df064ea47281987 < ff330ce16c846b70164ff0eb544c81219d4c5c08affected
LinuxLinuxdd08ebf6c3525a7ea2186e636df064ea47281987 < 78b1074966d290d4517f42bc81e13c4349368d12affected
LinuxLinuxdd08ebf6c3525a7ea2186e636df064ea47281987 < d94b9922b2ae5ee6e900f8da0bd537b251c6110caffected
LinuxLinuxdd08ebf6c3525a7ea2186e636df064ea47281987 < 3feeb667197bd58a17f4edfdbcad249ffcb3c864affected
LinuxLinux6.8affected
LinuxLinux0 < 6.8unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References