EUVD-2026-24781

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in updatesuperwork when racing with umount Commit b98535d09179 "ext4: fix bugon in startthishandle during umount filesystem" moved ext4unregistersysfs before flushing ssbupdwork to prevent new error work...

CVE-2026-31529

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix leakage in constructregion Failing the first sysfsupdategroup needs to explicitly kfree the resource as it is too early for cxlregioniomemrelease to do so...

CVE-2026-31457

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: check contexts-nr in repeatcallfn damonsysfsrepeatcallfn calls damonsysfsupdtunedintervals, damonsysfsupdschemesstats, and damonsysfsupdschemeseffectivequotas without checking contexts-nr. If nrcontexts is set to ...

CVE-2026-31458

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: check contexts-nr before accessing contextsarr0 Multiple sysfs command paths dereference contextsarr0 without first verifying that kdamond-contexts-nr == 1. A user can set nrcontexts to 0 via sysfs while DAMON is...

CVE-2026-31459

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: fix paramctx leak on damonsysfsnewtestctx failure Patch series "mm/damon/sysfs: fix memory leak and NULL dereference issues", v4. DAMONSYSFS can leak memory under allocation failure, and do NULL pointer dereferenc...

CVE-2026-31446

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in updatesuperwork when racing with umount Commit b98535d09179 "ext4: fix bugon in startthishandle during umount filesystem" moved ext4unregistersysfs before flushing ssbupdwork to prevent new error work...

CVE-2026-31434

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix leak of kobject name for sub-group spaceinfo When createspaceinfosubgroup allocates elements of spaceinfo-subgroup, kobjectinitandadd is called for each element via btrfssysfsaddspaceinfotype. However, when...

CVE-2026-31529

The CVE-2026-31529 issue affects the Linux kernel in the cxl/region code path. The vulnerability is a leakage (resource/memory) in __construct_region(): if sysfs_update_group() fails, the resource isn’t explicitly freed, which can lead to leakage. Several sources confirm the fix and describe the ...

CVE-2026-31459 mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: fix paramctx leak on damonsysfsnewtestctx failure Patch series "mm/damon/sysfs: fix memory leak and NULL dereference issues", v4. DAMONSYSFS can leak memory under allocation failure, and do NULL pointer dereferenc...

CVE-2026-31459 mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: fix paramctx leak on damonsysfsnewtestctx failure Patch series "mm/damon/sysfs: fix memory leak and NULL dereference issues", v4. DAMONSYSFS can leak memory under allocation failure, and do NULL pointer dereferenc...

CVE-2026-31459

CVE-2026-31459 affects the Linux kernel DAMON_SYSFS path. The vulnerability is a memory leak: when damon_sysfs_new_test_ctx() fails inside damon_sysfs_commit_input(), param_ctx is leaked because the cleanup at the out label is skipped. The patch series “mm/damon/sysfs: fix memory leak and NULL de...

CVE-2026-31458 mm/damon/sysfs: check contexts->nr before accessing contexts_arr[0]

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: check contexts-nr before accessing contextsarr0 Multiple sysfs command paths dereference contextsarr0 without first verifying that kdamond-contexts-nr == 1. A user can set nrcontexts to 0 via sysfs while DAMON is...

CVE-2026-31457 mm/damon/sysfs: check contexts->nr in repeat_call_fn

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: check contexts-nr in repeatcallfn damonsysfsrepeatcallfn calls damonsysfsupdtunedintervals, damonsysfsupdschemesstats, and damonsysfsupdschemeseffectivequotas without checking contexts-nr. If nrcontexts is set to ...

CVE-2026-31457 mm/damon/sysfs: check contexts->nr in repeat_call_fn

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: check contexts-nr in repeatcallfn damonsysfsrepeatcallfn calls damonsysfsupdtunedintervals, damonsysfsupdschemesstats, and damonsysfsupdschemeseffectivequotas without checking contexts-nr. If nrcontexts is set to ...

CVE-2026-31457

The CVE-2026-31457 entry describes a Linux kernel vulnerability in DAMON (mm/damon/sysfs) where damon_sysfs_repeat_call_fn() dereferences contexts_arr[0] when nr_contexts is set to 0 via sysfs, due to a missing check on contexts->nr. This can occur while DAMON is running and cause a NULL point...

CVE-2026-31446 ext4: fix use-after-free in update_super_work when racing with umount

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in updatesuperwork when racing with umount Commit b98535d09179 "ext4: fix bugon in startthishandle during umount filesystem" moved ext4unregistersysfs before flushing ssbupdwork to prevent new error work...

CVE-2026-31446 ext4: fix use-after-free in update_super_work when racing with umount

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in updatesuperwork when racing with umount Commit b98535d09179 "ext4: fix bugon in startthishandle during umount filesystem" moved ext4unregistersysfs before flushing ssbupdwork to prevent new error work...

CVE-2026-31446

CVE-2026-31446 is a Linux kernel/ext4 vulnerability describing a use-after-free in update_super_work during unmount races. The root cause: update_super_work calls ext4_notify_error_sysfs() -> sysfs_notify() after ext4_unregister_sysfs() frees the kobject, leading to a stale kernfs_node access....

CVE-2026-31434 btrfs: fix leak of kobject name for sub-group space_info

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix leak of kobject name for sub-group spaceinfo When createspaceinfosubgroup allocates elements of spaceinfo-subgroup, kobjectinitandadd is called for each element via btrfssysfsaddspaceinfotype. However, when...

CVE-2026-31434 btrfs: fix leak of kobject name for sub-group space_info

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix leak of kobject name for sub-group spaceinfo When createspaceinfosubgroup allocates elements of spaceinfo-subgroup, kobjectinitandadd is called for each element via btrfssysfsaddspaceinfotype. However, when...