CVE-2026-68268: drm/xe: Return error on non-migratable faults requiring devmem
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026081023-CVE-2026-68268-dc64@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/xe: Return error on non-migratable faults requiring devmem Non-migratable faults that require devmem incorrectly jump to the 'out' label, which squashes the error code intended to be returned to the upper layers. Fix this by returning -EACCES instead. (cherry picked from commit c4508edb2c723de93717272488ea65b165637eac) The Linux kernel CVE team has assigned CVE-2026-68268 to this issue. Affected and fixed versions =========================== Issue introduced in 6.18 with commit 4208fac3dce52d4328007028ec88dd5d0e78dcf2 and fixed in 6.18.42 with commit 90a8a938e0caecc9ee9dec3eb9eda92d66ba02a3 Issue introduced in 6.18 with commit 4208fac3dce52d4328007028ec88dd5d0e78dcf2 and fixed in 7.1.6 with commit 7445e1b85159baf40d56b9557f344f131f924dd0 Issue introduced in 6.18 with commit 4208fac3dce52d4328007028ec88dd5d0e78dcf2 and fixed in 7.2-rc2 with commit 136fb61ba8571076dc5d49350a0e6d002d740b74 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-68268 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/gpu/drm/xe/xe_svm.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/90a8a938e0caecc9ee9dec3eb9eda92d66ba02a3 https://git.kernel.org/stable/c/7445e1b85159baf40d56b9557f344f131f924dd0 https://git.kernel.org/stable/c/136fb61ba8571076dc5d49350a0e6d002d740b74