CVE-2026-68462 bpf: Reject negative const offsets for buffer pointers

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...

EUVD-2026-59084

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-2026-68462

Summary of CVE-2026-68462 (Linux kernel, BPF): The issue arises in the verifier’s handling of buffer-pointer access (PTR_TO_TP_BUFFER and PTR_TO_BUF) where a constant negative offset could slip through after a pointer offset split (reg->var_off vs reg->off). Specifically, an access with reg...

CVE-2026-68462 bpf: Reject negative const offsets for buffer pointers

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...

PT-2026-72774

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject sleepable BPF LSM CGROUP programs at load time The cgroup shim runs under rcu read lock dont migrate, so we should not attach any sleepable BPF programs there. Add support to the verifier to explicitly reject attempts...

PT-2026-72614

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve pointer spill metadata during half-slot cleanup clean func state cleans dead stack slots in 4-byte halves. When the high half of a STACK SPILL slot is dead and the low half remains live, cleanup converts the live lo...

PT-2026-72299

In the Linux kernel, the following vulnerability has been resolved: bpf,fork: wipe -bpf storage before bailouts that access it Currently, copy process can bail out to free task before p-bpf storage has been initialized, with this call graph shown here for the !CONFIG MEMCG case: copy process dup...

PT-2026-72704

In the Linux kernel, the following vulnerability has been resolved: tcp: clear sock ops cb flags before force-closing a child socket A child socket inherits the listener's bpf sock ops cb flags via sk clone lock. If its setup fails in tcp v4 syn recv sock / tcp v6 syn recv sock, the child is free...

PT-2026-72796

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

PT-2026-72615

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix effective prog array index with BPF F PREORDER replace effective prog and purge effective progs located the slot in the effective array by walking the program hlist and counting entries linearly. That count does not matc...

PT-2026-72771

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL pointer dereference in bpf task from vpid bpf task from vpid looks up a task in the pid namespace of the current task, via find task by vpid: find task by vpidvpid find task by pid nsvpid, task active pid nscurrent...

PT-2026-72780

In the Linux kernel, the following vulnerability has been resolved: bpf: Clear rb node linkage when freeing bpf rb root bpf rb root free detaches the root by copying the current rb root cached and then replacing the live root with RB ROOT CACHED. It then walks the copied root and drops each objec...

PT-2026-72773

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NMI/tracepoint re-entry deadlock on lru locks NMI and tracepoint BPF programs can re-enter the per-CPU or global LRU lock that bpf lru pop free/push free already hold on the same CPU, AA-deadlocking. Lockdep reports...

PT-2026-72836

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

PT-2026-72807

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

Linux Distros Unpatched Vulnerability : CVE-2026-74337

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Fix NMI/tracepoint re-entry deadlock on lru locks NMI and tracepoint BPF programs can re-enter the per-CPU or global LRU lock that bpflrupopfree/pushfree...

Linux Distros Unpatched Vulnerability : CVE-2026-74314

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Cancel special fields on map value recycle Map update and delete paths currently call bpfobjfreefields when a value is being replaced or recycled. That mak...

Linux Distros Unpatched Vulnerability : CVE-2026-72111

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Reset register bounds before narrowing retval range in checkmemaccess When the BPF verifier processes a context load of an LSM hook return value, it calls...

PT-2026-72611

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard conntrack opts error writes The conntrack lookup and allocation kfuncs take an opts pointer together with an opts sz argument. The verifier checks only the memory range described by opts sz, but the wrappers...

PT-2026-72799

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 -free inode into -destroy inode to avoid sleepin...