CVE-2026-72362
Description
AI Translation Available
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)
https://git.kernel.org/stable/c/3feeb667197bd58a17f4edfdbcad249ffcb3c864
https://git.kernel.org/stable/c/78b1074966d290d4517f42bc81e13c4349368d12
https://git.kernel.org/stable/c/d94b9922b2ae5ee6e900f8da0bd537b251c6110c
https://git.kernel.org/stable/c/ff330ce16c846b70164ff0eb544c81219d4c5c08