CVE-2026-72362
Description
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)
How to fix
- Linux Linuxff330ce16c846b70164ff0eb544c81219d4c5c08, 78b1074966d290d4517f42bc81e13c4349368d12, d94b9922b2ae5ee6e900f8da0bd537b251c6110c, 3feeb667197bd58a17f4edfdbcad249ffcb3c864 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | dd08ebf6c3525a7ea2186e636df064ea47281987 ≤ v < ff330ce16c846b70164ff0eb544c81219d4c5c08, dd08ebf6c3525a7ea2186e636df064ea47281987 ≤ v < 78b1074966d290d4517f42bc81e13c4349368d12, dd08ebf6c3525a7ea2186e636df064ea47281987 ≤ v < d94b9922b2ae5ee6e900f8da0bd537b251c6110c, dd08ebf6c3525a7ea2186e636df064ea47281987 ≤ v < 3feeb667197bd58a17f4edfdbcad249ffcb3c864, 6.8 | ff330ce16c846b70164ff0eb544c81219d4c5c08, 78b1074966d290d4517f42bc81e13c4349368d12, d94b9922b2ae5ee6e900f8da0bd537b251c6110c, 3feeb667197bd58a17f4edfdbcad249ffcb3c864 |
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