CVE-2025-39913

CVE-2025-39913 - Linux Kernel eBPF SOCKMAP UAF Autor: Byte Reaper Mi plataforma :https://www.bytrep.com/ Descripción Este repositorio contiene una prueba de concepto técnica para CVE-2025-39913, una vulnerabilidad en la función tcpbpfsendverdict del kernel de Linux. Cuando bpfmsgcorkbytes no pued...

Linux Distros Unpatched Vulnerability : CVE-2026-80735

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ovpn: ensure socket is owned by ovpn before deref skuserdata Some subsystems, like BPF SOCKMAP, set skuserdata without actually setting the encaptype. For this...

UBUNTU-CVE-2026-80735

In the Linux kernel, the following vulnerability has been resolved: ovpn: ensure socket is owned by ovpn before deref skuserdata Some subsystems, like BPF SOCKMAP, set skuserdata without actually setting the encaptype. For this reason, we must make sure that the type is the one ovpn expects befor...

Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-500248)

The remote Oracle Linux 10 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-500248 advisory. - inet: frags: strip GSO state from fragments before reassembly Xinyang Ge Orabug: 39974840 CVE-2026-80590 - KVM: x86: Cancel delayed I/O APIC E...

CVE-2026-80735

In the Linux kernel, the following vulnerability has been resolved: ovpn: ensure socket is owned by ovpn before deref skuserdata Some subsystems, like BPF SOCKMAP, set skuserdata without actually setting the encaptype. For this reason, we must make sure that the type is the one ovpn expects befor...

EUVD-2026-70339

In the Linux kernel, the following vulnerability has been resolved: ovpn: ensure socket is owned by ovpn before deref skuserdata Some subsystems, like BPF SOCKMAP, set skuserdata without actually setting the encaptype. For this reason, we must make sure that the type is the one ovpn expects befor...

CVE-2026-80735 ovpn: ensure socket is owned by ovpn before deref sk_user_data

In the Linux kernel, the following vulnerability has been resolved: ovpn: ensure socket is owned by ovpn before deref skuserdata Some subsystems, like BPF SOCKMAP, set skuserdata without actually setting the encaptype. For this reason, we must make sure that the type is the one ovpn expects befor...

CVE-2026-80735 ovpn: ensure socket is owned by ovpn before deref sk_user_data

In the Linux kernel, the following vulnerability has been resolved: ovpn: ensure socket is owned by ovpn before deref skuserdata Some subsystems, like BPF SOCKMAP, set skuserdata without actually setting the encaptype. For this reason, we must make sure that the type is the one ovpn expects befor...

CVE-2026-80735

CVE-2026-80735 affects the ovpn (OpenVPN) module in the Linux kernel . The root cause is a missing type-check: subsystems such as BPF SOCKMAP can set sk_user_data without setting the expected encap_type, and the ovpn driver dereferences sk_user_data without verifying the socket is actually owned ...

Important: kernel6.18

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: afunix: Drop all SCM attributes for SOCKMAP. CVE-2026-53005 In the Linux kernel, the following vulnerability has been resolved: bpf: Reject BPFMAPTYPEINODESTORAGE creation if BPF LSM is uninitialized When...

SUSE-SU-2026:3810-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 RT kernel was updated to fix various security issues: The following security issues were fixed: - CVE-2025-68741: scsi: qla2xxx: Fix improper freeing of purex item bsc1255703. - CVE-2025-68818: scsi: Revert 'scsi: qla2xxx: Perform lockless command completion in...

CVE-2026-74589

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF sockmap feature. A use-after-free vulnerability exists in the skredir mechanism within the tcpbpfsendmsgredir function. This occurs when a socket reference is prematurely released while another thread still holds a raw pointer to i...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed issues where data was not being charged when msg-sg.size contained more data. In tcpbpfsendverdict: If msg-sg.size contains more data after tcpbpfsendmsgredir: c tcpbpfsendverdict tosend = msg-sg.size...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fixed the issue where the memory of skmsg was uncharged twice. If tcpbpfsendmsg is running during a cleanup operation, psock may be freed. c tcpbpfsendmsg tcpbpfsendverdict skmsgreturn tcpbpfsendmsgredir...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed a memory leak in skpsockqueuemsg. If tcpbpfsendmsg is running during a cleanup operation, we might enqueue data onto the ingress msg queue while trying to free it. sk1 redirected to sk2 -------------------...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Check for any of tcpbpfprots when cloning a listener. A listening socket linked to a sockmap has its skprot overridden. It points to one of the struct proto variants in tcpbpfprots. This variant depends on the...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed a race condition in sockmapfree. sockmapfree calls releasesocksk without owning a reference to the socket. This could lead to a use-after-free, as syzbot identified this issue 1. Jakub Sitnicki already...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Rejects redirects of skmsg messages to non-TCP sockets With a SOCKMAP/SOCKHASH map and a skmsg program, users can direct messages sent from one TCP socket s1 to actually exiting from another TCP socket s2...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed the warning related to sk-skforwardalloc in skstreamkillqueues. When running testsockmap in selftests, the following warning appears: WARNING: CPU: 2 PID: 197 at net/core/stream.c:205...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: BPF, sockmap: Prevent lock inversion deadlock in mapdeleteelem operation. The syzkaller started using corpuses where a BPF tracing program deletes elements from a sockmap/sockhash map. Since BPF tracing programs can be invoked fr...