UBUNTU-CVE-2026-68462

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject negative const offsets for buffer pointers The verifier rejects variable offsets for PTRTOTPBUFFER and PTRTOBUF accesses, but it currently accepts a constant negative offset produced by pointer arithmetic. Commit...

CVE-2026-74400 bpf: fix crash in bpf_[set|remove]_dentry_xattr for negative dentries

In the Linux kernel, the following vulnerability has been resolved: bpf: fix crash in bpfset|removedentryxattr for negative dentries bpfsetdentryxattr and bpfremovedentryxattr BPF kfuncs attempt to lock the inode of the supplied dentry without checking if it is NULL. If a negative dentry is passe...

CVE-2026-74400 bpf: fix crash in bpf_[set|remove]_dentry_xattr for negative dentries

In the Linux kernel, the following vulnerability has been resolved: bpf: fix crash in bpfset|removedentryxattr for negative dentries bpfsetdentryxattr and bpfremovedentryxattr BPF kfuncs attempt to lock the inode of the supplied dentry without checking if it is NULL. If a negative dentry is passe...

CVE-2026-74400

CVE-2026-74400 affects the Linux kernel: bpf_set_dentry_xattr and bpf_remove_dentry_xattr kfuncs may crash when given negative dentries because d_inode(dentry) can be NULL, leading to inode_lock(NULL). The fix adds a NULL check for the inode and returns -EINVAL when NULL. The patch also removes a...

EUVD-2026-59547

In the Linux kernel, the following vulnerability has been resolved: bpf: fix crash in bpfset|removedentryxattr for negative dentries bpfsetdentryxattr and bpfremovedentryxattr BPF kfuncs attempt to lock the inode of the supplied dentry without checking if it is NULL. If a negative dentry is passe...

EUVD-2026-59518

In the Linux kernel, the following vulnerability has been resolved: bpf: fix BPFPROGQUERY OOB write and cgroup backward compat BPFPROGQUERY writes back the 'query.revision' field unconditionally to userspace. If userspace passes a smaller 'bpfattr' structure e.g. 40 bytes, which was the layout...

EUVD-2026-59511

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps as inner maps in map-in-map An exclusive map created with exclproghash is bound to a single program by hash: checkmapprogcompatibility refuses to load any program whose digest does not match...

CVE-2026-74363

The CVE-2026-74363 entry concerns a Linux kernel BPF/bpffs use-after-free related to inode cleanup. The root cause was that moved cleanup from ->free_inode() into ->destroy_inode() to avoid sleeping in RCU when calling bpf_any_put(), which inadvertently removed the RCU delay on freeing the ...

CVE-2026-74364 bpf: Reject exclusive maps as inner maps in map-in-map

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps as inner maps in map-in-map An exclusive map created with exclproghash is bound to a single program by hash: checkmapprogcompatibility refuses to load any program whose digest does not match...

CVE-2026-74364

The CVE-2026-74364 issue concerns the Linux kernel’s BPF map-in-map handling. A map created as an exclusive map (excl_prog_hash) is bound to a single program by hash. check_map_prog_compatibility() refuses to load programs unless their digest matches map->excl_prog_sha, but this check only cov...

EUVD-2026-59510

In the Linux kernel, the following vulnerability has been resolved: bpf: fix UAF by restoring RCU-delayed inode freeing in bpffs commit 4f375ade6aa9 "bpf: Avoid RCU context warning when unpinning htab with internal structs" moved inode cleanup from -freeinode into -destroyinode to avoid sleeping ...

CVE-2026-74364 bpf: Reject exclusive maps as inner maps in map-in-map

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps as inner maps in map-in-map An exclusive map created with exclproghash is bound to a single program by hash: checkmapprogcompatibility refuses to load any program whose digest does not match...

CVE-2026-74363 bpf: fix UAF by restoring RCU-delayed inode freeing in bpffs

In the Linux kernel, the following vulnerability has been resolved: bpf: fix UAF by restoring RCU-delayed inode freeing in bpffs commit 4f375ade6aa9 "bpf: Avoid RCU context warning when unpinning htab with internal structs" moved inode cleanup from -freeinode into -destroyinode to avoid sleeping ...

CVE-2026-74360

The CVE-2026-74360 entry describes a Linux kernel vulnerability in BPF iterators: bpf_map_elem iterators bind their target map at attach time, bypassing the exclusivity check enforced by check_map_prog_compatibility() for excl_prog_hash. This can undermine the intended isolation of exclusive maps...

CVE-2026-74360 bpf: Reject exclusive maps for bpf_map_elem iterators

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps for bpfmapelem iterators Exclusive maps aka exclproghash are meant to be reachable only from the single program whose hash matches. This is enforced by checkmapprogcompatibility when the map is referenc...

CVE-2026-74360 bpf: Reject exclusive maps for bpf_map_elem iterators

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps for bpfmapelem iterators Exclusive maps aka exclproghash are meant to be reachable only from the single program whose hash matches. This is enforced by checkmapprogcompatibility when the map is referenc...

EUVD-2026-59507

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject exclusive maps for bpfmapelem iterators Exclusive maps aka exclproghash are meant to be reachable only from the single program whose hash matches. This is enforced by checkmapprogcompatibility when the map is referenc...

EUVD-2026-59501

In the Linux kernel, the following vulnerability has been resolved: bpf: Take mmaplock in zappages zapvmarange requires the owning mm's mmaplock to be held. Taking mmapreadlock under arena-lock would AB-BA against arenavmclose and arenamapmmap, both of which run with mmapwritelock held and then...

CVE-2026-74354 bpf: Take mmap_lock in zap_pages()

In the Linux kernel, the following vulnerability has been resolved: bpf: Take mmaplock in zappages zapvmarange requires the owning mm's mmaplock to be held. Taking mmapreadlock under arena-lock would AB-BA against arenavmclose and arenamapmmap, both of which run with mmapwritelock held and then...

CVE-2026-74354 bpf: Take mmap_lock in zap_pages()

In the Linux kernel, the following vulnerability has been resolved: bpf: Take mmaplock in zappages zapvmarange requires the owning mm's mmaplock to be held. Taking mmapreadlock under arena-lock would AB-BA against arenavmclose and arenamapmmap, both of which run with mmapwritelock held and then...