CVE-2026-89603

A flaw was found in the Linux kernel. A race condition exists where a seccomp filter, intended to restrict system calls, can be bypassed by an unprivileged process. This occurs when a thread is stopped for tracing ptrace and another thread attempts to apply a seccomp filter with the...

AZL-100500 CVE-2026-89603 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

DEBIAN-CVE-2026-89603

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

CVE-2026-89603

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

CVE-2026-89603

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

UBUNTU-CVE-2026-89603

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

CVE-2026-89603

CVE-2026-89603 is a race condition in the Linux kernel's syscall_trace_enter() that allows seccomp filter bypass via ptrace. When a thread is stopped for ptrace, another thread can install a seccomp filter with SECCOMP_FILTER_FLAG_TSYNC; however, syscall_trace_enter() evaluates a cached 'work' va...

EUVD-2026-76515

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

CVE-2026-89603 entry: Fix seccomp bypass after ptrace with TSYNC

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

CVE-2026-89603 entry: Fix seccomp bypass after ptrace with TSYNC

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

CVE-2026-89603

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

PT-2026-90319

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists where a seccomp filter can be bypassed after a ptrace stop. If a thread is stopped in the syscall trace enter function for ptrace, another thread can install a...

PT-2026-96474

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscall trace enter for ptrace, another thread can install a seccomp filter with SECCOMP FILTER FLAG TSYN...

CVE-2026-89603: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: entry: Fix seccomp bypass after ptrace with TSYNC Sashiko review pointed out the following issue. If a thread is stopped in syscalltraceenter for ptrace, another thread can install a seccomp filter with SECCOMPFILTERFLAGTSYNC e.g...

AlmaLinux 10 : kernel (ALSA-2026:61887)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:61887 advisory. kernel: seccomp: passthrough uretprobe systemcall without filtering CVE-2025-21834 kernel: ip6tunnel: use skbvlaninetprepare in ip6tnlrcv CVE-2026-23003...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

kernel: seccomp: passthrough uretprobe systemcall without filtering

A flaw was found in the Linux kernel. This vulnerability occurs when uretprobes, a debugging feature that monitors function returns in user-space programs, are used. The kernel's seccomp secure computing mode mechanism, which restricts system calls a program can make, incorrectly blocks the...

seccomp-tools v1.7.1

Seccomp Tools Powerful tools for seccomp analysis. This project is aimed primarily but not exclusively at analyzing seccomp sandboxes in CTF pwn challenges. Some features are CTF-specific, but they're just as useful for analyzing real-world seccomp filters. Features Dump - Automatically dumps...

CVE-2026-61711

A flaw was found in BuildKit. A custom frontend could craft a build request with an invalid security mode, leading to the disabling of Seccomp and AppArmor protections for the build container. This bypasses the intended sandbox mechanisms, potentially allowing for broader impact within the...

SUSE CVE-2026-61711

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, a custom frontend could place an invalid SecurityMode value in a crafted build request, and executor/oci/speclinux.go treated the unsupported value as a...