PT-2026-90296

In the Linux kernel, the following vulnerability has been resolved: bpf: Disable preemption in bpf get stack get perf callchain returns a per-CPU perf callchain entry buffer and releases its recursion slot via put callchain entry before returning, so nothing keeps the entry reserved while bpf get...

PT-2026-90295

In the Linux kernel, the following vulnerability has been resolved: bpf: Harden bloom filter sizing and indexing on 32-bit kernels bloom map alloc has two 32-bit-specific problems when the computed bitmap reaches the U32 MAX fallback case. First, BITS TO BYTESU32 MAX is evaluated with 32-bit...

CVE-2026-31413-BPF-Container-Escape

CVE-2026-31413: One Byte in the BPF Verifier to Container Escape I found a soundness bug in the Linux BPF verifier - a + 1 in a pushstack call that causes the verifier to skip an ALU instruction on a forked path. For BPFOR, this means the verifier tracks dst = 0 while the CPU computes 0 | K = K. ...

block-copyfail

Summary CVE-2026-31431 "Copy Fail" is a Linux kernel privilege escalation vulnerability in the algifaead cryptographic interface. An attacker uses AFALG sockets with the authencesn algorithm and splice to corrupt arbitrary files in the kernel page cache — including setuid binaries like /usr/bin/s...

cve-2024-23113-poc

CVE-2024-23113-poc CVE-2024-23113 is a vulnerability discovered in the Linux Kernel , classified as an arbitrary code execution vulnerability that affects the bpf Berkeley Packet Filter subsystem. Specifically, this vulnerability affects objects of the bpfprog type in bpf programs, and can allow ...

lsm_bpf_check_argc0

Check ARGC0 LSM BPF Simple LSM BPF program to prevent program executions with argc == 0, e.g. pwnkit CVE-2021-4034. It does nothing more than a simple check that all exec system calls are called with argc = 1. The check is based on Ariadne Conill's patch. How to build root@kitploit: On Ubuntu $...

KSMBD-CVE-2025-37947

CVE-2025-37947 PoC for ksmbd For more information, see the article here. Files bpf-tracer.sh - BPF msgmsg tracer CVE-2025-37947.c - exploit for CVE-2025-37947 proof-of-concept.c - minimal trigger that causes the OOB write ksmbd.conf - ksmbd config Makefile - builds exploit run-qemu.sh -...

copy-fail-blocker

copy-fail-blocker BPF-LSM mitigation for CVE-2026-31431 "Copy Fail" and the RxRPC variant of Dirty Frag, and for similar privilege-escalation vulnerabilities that depend on userspace access to a kernel-side in-place crypto path reachable via the AFALG or AFRXRPC socket families. A small DaemonSet...

block-copyfail

block-copyfail Prueba de concepto de mitigación en tiempo de ejecución para CVE-2026-31431 "Copy Fail" — una escalada de privilegios en el kernel de Linux mediante la plantilla criptográfica authencesn en algifaead. A diferencia del bloqueo de módulos, esto no requiere reinicio. Un programa BPF L...

deny-af-alg-bpf

deny-af-alg-bpf Description BPF LSM program that blocks AFALG Linux kernel crypto API socket creation and logs all attempts via a ring buffer to userspace. What it does Attaches to the lsm/socketcreate hook Denies any socketAFALG, ... call with -EPERM Emits structured events pid, comm to a BPF ri...

CVE-2026-0799

A flaw was found in libpcap. The Berkeley Packet Filter BPF interpreter in libpcap does not properly validate register indexes in BPF instructions. A local attacker could craft a malicious filter program to trigger an out-of-bounds read and write vulnerability. This could allow the attacker to re...

CVE-2017-16995-Linux-Kernel---BPF-Sign-Extension-Local-Privilege-Escalation-

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CVE-2026-31911

A flaw was found in libpcap. A local attacker could provide a crafted filter program containing an invalid Berkeley Packet Filter BPF opcode. This could cause the operating system OS process using libpcap to terminate, leading to a Denial of Service DoS...

CVE-2026-6244

A flaw was found in libpcap. The Berkeley Packet Filter BPF interpreter's 'div k' and 'mod k' instructions do not validate if the immediate value 'k' is zero. A local attacker with low privileges could exploit this by providing a specially crafted filter program, leading to a division-by-zero...

CVE-2026-6554

A flaw was found in libpcap. The Berkeley Packet Filter BPF interpreter incorrectly handles offsets in 'ja L' instructions, allowing backward jumps without limiting loop iterations. A local attacker could provide a specially crafted filter program, leading to an infinite loop and causing a Denial...

CVE-2020-8835

CVE-2020-8835 root@kitploit: In the Linux kernel 5.5.0 and newer, the bpf verifier kernel/bpf/verifier.c does not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. This vulnerability also affects the Linux 5.4 stable series,...

cve-2017-16995

CVE-2017-16995 Writeup The folder containes a line-by-line source code analysis for CVE-2017-16995 Linux BPF local privilege escalation. Exploit and patch tested on kernel 4.4.0.116. Credits Special thanks to difengtang who has also contributed this writeup. Exploit scripts was created by @iBearc...

CVE-2026-31912

A flaw was found in libpcap. The BPF interpreter in libpcap does not correctly handle crafted filter programs, leading to an out-of-bounds read. A local attacker could provide a specially crafted filter program, causing the interpreter to attempt to read memory outside of its allocated buffer. Th...

CVE-2026-6554

libpcap BPF interpreter treats the offset in the ja L BPF instructio...

Linux Distros Unpatched Vulnerability : CVE-2026-80865

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf: Add missing accessok call to copyusersyms As reported by sashiko we use getuser without prior accessok call on the user space pointer. Adding the missing...