CVE-2026-93173: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf,lsm: Drop bpfprogfree from sleepablelsmhooks bpfprogputrcu is the callrcu callback for non-sleepable programs. securitybpfprogfree called from there fires bpfprogfree in softirq; if a sleepable LSM prog is attached to that...

CVE-2026-93144: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject writes through untrusted BTF pointers checkptrtobtfaccess lets program-type btfstructaccess callbacks validate writes before the default BTF access path rejects non-read accesses. That bypasses the read-only policy fo...

CVE-2026-93112: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Require a BPF cpumask for bpfcpumaskpopulate bpfcpumaskpopulate writes to its destination with bitmapcopy, but the destination is typed as struct cpumask . That allows the verifier to accept borrowed cpumask pointers returne...

CVE-2026-93127: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Drop scalar id on sign-extending narrowing stack fills When a spilled scalar is filled back with a sign-extending narrowing load BPFMEMSX, checkstackreadfixedoff copies the spilled register including its scalar id, but...

CVE-2026-90317: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Invalidate RCU pointers after final spin unlock In a sleepable BPF program, a spin lock can provide the only RCU protection for a kptr. The final bpfspinunlock ends that protection, but the verifier leaves the pointer valid...

CVE-2026-90392: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix potential UAF when reading bpf link info In bpflinkshowfdinfo and bpflinkgetinfobyfd, link-prog is accessed without holding any locks. If the prog is concurrently replaced via bpflinkupdate, the old prog can be freed,...

CVE-2026-90250: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf, cgroup: Fix storage null-ptr-deref after replacing prog Syzkaller reported a storage null-ptr-deref issue after replacing prog. This occurs in the following scenario: 1. prog A, an empty prog, is attached to a cgrp. 2. prog ...

CVE-2026-93174: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Copy per-CPU map value padding in copymapvaluelong In kernel, per-CPU map elements are stored with roundupmap-valuesize, 8 bytes. On UAPI lookup paths, it copies the rounded size for each CPU into a temporary buffer. However...

PT-2026-94598

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A null-pointer dereference occurs in the bpf and cgroup components when replacing a program. This happens when an empty program attached to a cgroup is replaced by a new program that...

PT-2026-94507

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists where BPF programs attached to BPF CGROUP UNIX GETPEERNAME and BPF CGROUP UNIX GETSOCKNAME hooks run without acquiring the socket lock. Because the helpers bpf setsockopt...

CVE-2026-93045: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject arena frees below the arena base bpfarenafreepages accepts scalar arena addresses. The runtime masks the address to the low 32 bits and reconstructs a full user address from the arena base before returning the range t...

PT-2026-94969

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF LSM component where security bpf prog free is called via bpf prog put rcu, which serves as the call rcu callback for non-sleepable programs. This sequence...

PT-2026-94970

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF subsystem where per-CPU map elements are stored using a rounded size, but the copy map value long function passes only the map-value size to bpf obj memcpy. Wh...

CVE-2026-90159: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow bpfg,setsockopt in cgroup UNIX getname hooks bpfsetsockopt and bpfgetsockopt call sockownedbyme for full sockets, so these helpers expect the socket lock to be held. BPFCGROUPUNIXGETPEERNAME and...

PT-2026-94661

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An invalid storage access issue exists when replacing a cgroup BPF program in multi-attach mode. If the replacement process fails midway—specifically during bpf trampoline link cgroup sh...

CVE-2026-90312: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Check load-acquire src ptr type before the load checkatomicload calls checkloadmem before atomicptrtypeok. For a load-acquire that fetches into its own source register dstreg == srcreg, checkloadmem overwrites srcreg's type...

CVE-2026-90300: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in bpfgettaskstack Both bpfgettaskstack and bpfgettaskstacksleepable helpers that use bpfgettaskstack have buf defined as ARGPTRTOUNINITMEM argument and we should initialize the buf on every return path...

PT-2026-94923

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF Berkeley Packet Filter subsystem where the verifier incorrectly tracks register values during stack fills. When a spilled scalar is filled using a sign-extendi...

PT-2026-94413

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the net/smc component where IPPROTO SMC sockets fail to release an internal TCP sock, referred to as clcsock, when socket creation fails after the proto-init hook has...

PT-2026-94931

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the BPF Berkeley Packet Filter subsystem where the verifier skips rewriting the helper call offset insn-imm in bpf do misc fixups for architectures that implement bpf...