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-2026-93111: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark tracingmulti trampolines as ftrace managed Since tracingmulti link does not set ftracemanaged, it would fail to release the tracingmulti link when attaching tracingmulti link and then attaching fentry link. 3.714215...

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-2026-90211: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf, s390: Clear fetch destination on faulting arena atomic Same missing register clear as on riscv64. A RMW atomic on an arena pointer is converted to BPFPROBEATOMIC and gets an exception table entry, but bpfjitprobeatomicpre on...

CVE-2026-90359: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject 8 byte return values on return-reading trampoline paths btfdistillfuncproto builds the function model used for the fentry/fexit/fmodret/fsession trampolines and structops. It has accepted a 16-byte int128 return value...

CVE-2026-90299: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix sleepable check for tracing/lsm prog When CONFIGFUNCTIONERRORINJECTION is disabled, a sleepable tracing prog is allowed to attach to 'x64'-alike prefix symbols. It is because the verifier does not verify whether the symb...

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-2026-90313: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf, cgroup: Fix invalid storage access after cgroupbpfattach failed A potential invalid storage access issue can occur after replacing a cgroup bpf prog. This occurs in the following scenario: 1. prog1 with storage is attached t...

CVE-2026-92485: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix WARNING in bpftracinglinkrelease The trampoline could be corrupted by the blindly 'tr-flags = BPFTRAMPFTAILCALLCTX' in verifier. 1. A fexit attached to a tailcallreachable prog. 'tr-flags' became 'BPFTRAMPFCALLORIG |...

PT-2026-94740

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Use-After-Free UAF issue exists when reading bpf link information. In the functions bpf link show fdinfo and bpf link get info by fd, the link-prog variable is accessed without proper...

CVE-2026-93043: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow interpreter fallback for gotox insn The interpreter does not recognize the BPFJMP|BPFJA|BPFX insn, which is used for insnarray map. Thereafter, it would hit the BUGON in bpfprogrun at run time. 2.563726 BPF...

PT-2026-94828

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description Queue and stack pop/peek helpers accept an uninitialized output buffer because the verifier expects the helper to initialize it. While the empty-map error path clears the buffer, a faile...

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...

CVE-2026-90195: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix missing sign-ext for signed 1-byte and 2-byte kfunc args On RV64, the ABI requires sign-extension for signed 1-byte and 2-byte kfunc args. However, the RV64 JIT currently does not perform sign-extension for such...

CVE-2026-90217: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Compare iterator types during state pruning An iterator stack slot can be MEMRCU or PTRUNTRUSTED. These states must not be equal, or the verifier can prune an unsafe path. Compare the pointer type for STACKITER slots...

CVE-2026-90143: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: kcm: Hold RCU read lock while running BPF parser kcmparsefuncstrparser calls bpfprogrunpinoncpu which prevents CPU migration, but does not establish an RCU read-side critical section. Consequently, BPF map operations can...

CVE-2026-90157: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject negative optlen in cgroup getsockopt hook A cgroup getsockopt BPF program can shrink ctx-optlen after the kernel getsockopt handler has run. The kernel-buffer variant, used by TCPZEROCOPYRECEIVE, only rejects values...

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...

CVE-2026-90210: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF in bpftrampolinemultiattachfree on update failure When bpftrampolineupdate fails before modifyfentrymulti/ unregisterfentrymulti is called, curimage is unchanged curimage == oldimage and ftrace still calls into it...

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...