CVE-2026-74393: drm/syncobj: Fix memory leak in drm_syncobj_find_fence()
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026081507-CVE-2026-74393-6160@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/syncobj: Fix memory leak in drm_syncobj_find_fence() Commit 18226ba52159 ("drm/syncobj: reject invalid flags in drm_syncobj_find_fence") forgot to take into account the fact that drm_syncobj_find() takes a reference to syncobj and returns early without dropping the reference, leading to memory leaks. Reported by: Sam Spencer <[email protected]> The Linux kernel CVE team has assigned CVE-2026-74393 to this issue. Affected and fixed versions =========================== Issue introduced in 6.9 with commit 18226ba52159257d4c2f777a168cc09adb3c1ac0 and fixed in 6.12.97 with commit e245f3491bf30a758786a4424854f61fee472308 Issue introduced in 6.9 with commit 18226ba52159257d4c2f777a168cc09adb3c1ac0 and fixed in 6.18.40 with commit 7471006cd854d159723344be809e8287a2d75502 Issue introduced in 6.9 with commit 18226ba52159257d4c2f777a168cc09adb3c1ac0 and fixed in 7.1.5 with commit 5c5994a1204743fa55e4c198ed93a6c36f21cd1f Issue introduced in 6.9 with commit 18226ba52159257d4c2f777a168cc09adb3c1ac0 and fixed in 7.2-rc1 with commit e5b93bd6fdb92aa5e4689715d7e8487d9ce66a38 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-2026-74393 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/drm_syncobj.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/e245f3491bf30a758786a4424854f61fee472308 https://git.kernel.org/stable/c/7471006cd854d159723344be809e8287a2d75502 https://git.kernel.org/stable/c/5c5994a1204743fa55e4c198ed93a6c36f21cd1f https://git.kernel.org/stable/c/e5b93bd6fdb92aa5e4689715d7e8487d9ce66a38