CVE-2026-31554

A flaw was found in the Linux kernel. A local attacker could exploit a use-after-free vulnerability by calling the sysfutexrequeue function with inconsistent flags. This could lead to a system crash, resulting in a denial of service, or potentially allow for privilege escalation...

DEBIAN-CVE-2026-31554

In the Linux kernel, the following vulnerability has been resolved: futex: Require sysfutexrequeue to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue is used with different flags. The initial motivation for allowing different flags wa...

CVE-2026-31554

In the Linux kernel, the following vulnerability has been resolved: futex: Require sysfutexrequeue to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue is used with different flags. The initial motivation for allowing different flags wa...

CVE-2026-31555

In the Linux kernel, the following vulnerability has been resolved: futex: Clear stale exiting pointer in futexlockpi retry path Fuzzying/stressing futexes triggered: WARNING: kernel/futex/core.c:825 at waitforownerexiting+0x7a/0x80, CPU11: futexlockpis/524 When futexlockpiatomic sees the owner i...

DEBIAN-CVE-2026-31555

In the Linux kernel, the following vulnerability has been resolved: futex: Clear stale exiting pointer in futexlockpi retry path Fuzzying/stressing futexes triggered: WARNING: kernel/futex/core.c:825 at waitforownerexiting+0x7a/0x80, CPU11: futexlockpis/524 When futexlockpiatomic sees the owner i...

CVE-2026-31554

In the Linux kernel, the following vulnerability has been resolved: futex: Require sysfutexrequeue to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue is used with different flags. The initial motivation for allowing different flags wa...

CVE-2026-31555

In the Linux kernel, the following vulnerability has been resolved: futex: Clear stale exiting pointer in futexlockpi retry path Fuzzying/stressing futexes triggered: WARNING: kernel/futex/core.c:825 at waitforownerexiting+0x7a/0x80, CPU11: futexlockpis/524 When futexlockpiatomic sees the owner i...

EUVD-2026-25448

In the Linux kernel, the following vulnerability has been resolved: futex: Clear stale exiting pointer in futexlockpi retry path Fuzzying/stressing futexes triggered: WARNING: kernel/futex/core.c:825 at waitforownerexiting+0x7a/0x80, CPU11: futexlockpis/524 When futexlockpiatomic sees the owner i...

CVE-2026-31555 futex: Clear stale exiting pointer in futex_lock_pi() retry path

In the Linux kernel, the following vulnerability has been resolved: futex: Clear stale exiting pointer in futexlockpi retry path Fuzzying/stressing futexes triggered: WARNING: kernel/futex/core.c:825 at waitforownerexiting+0x7a/0x80, CPU11: futexlockpis/524 When futexlockpiatomic sees the owner i...

CVE-2026-31555

CVE-2026-31555 relates to a Linux kernel futex race in futex_lock_pi() retry path where a stale pointer to an exiting task is not cleared on retry. The issue can lead to a WARN_ON_ONCE when an old exiting pointer is used after a failed retry, potentially contributing to a DoS via kernel instabili...

CVE-2026-31555

In the Linux kernel, the following vulnerability has been resolved: futex: Clear stale exiting pointer in futexlockpi retry path Fuzzying/stressing futexes triggered: WARNING: kernel/futex/core.c:825 at waitforownerexiting+0x7a/0x80, CPU11: futexlockpis/524 When futexlockpiatomic sees the owner i...

CVE-2026-31555 futex: Clear stale exiting pointer in futex_lock_pi() retry path

In the Linux kernel, the following vulnerability has been resolved: futex: Clear stale exiting pointer in futexlockpi retry path Fuzzying/stressing futexes triggered: WARNING: kernel/futex/core.c:825 at waitforownerexiting+0x7a/0x80, CPU11: futexlockpis/524 When futexlockpiatomic sees the owner i...

CVE-2026-31554 futex: Require sys_futex_requeue() to have identical flags

In the Linux kernel, the following vulnerability has been resolved: futex: Require sysfutexrequeue to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue is used with different flags. The initial motivation for allowing different flags wa...

CVE-2026-31554

The CVE-2026-31554 entry concerns a Linux kernel futex requeue issue: using sys_futex_requeue() with different flags could enable a use-after-free/UaF condition. To fix, the code now requires identical flags for sys_futex_requeue() (matching the behavior of old-style sys_futex() requeue). The vul...

EUVD-2026-25447

In the Linux kernel, the following vulnerability has been resolved: futex: Require sysfutexrequeue to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue is used with different flags. The initial motivation for allowing different flags wa...

CVE-2026-31554

In the Linux kernel, the following vulnerability has been resolved: futex: Require sysfutexrequeue to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue is used with different flags. The initial motivation for allowing different flags wa...

CVE-2026-31554

In the Linux kernel, the following vulnerability has been resolved: futex: Require sysfutexrequeue to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue is used with different flags. The initial motivation for allowing different flags wa...

CVE-2026-31554 futex: Require sys_futex_requeue() to have identical flags

In the Linux kernel, the following vulnerability has been resolved: futex: Require sysfutexrequeue to have identical flags Nicholas reported that his LLM found it was possible to create a UaF when sysfutexrequeue is used with different flags. The initial motivation for allowing different flags wa...

PT-2026-34906

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Use-after-Free UaF issue exists in the Linux kernel when the sys futex requeue function is used with different flags. This occurs because the system did not mandate identical flags for...

Linux Distros Unpatched Vulnerability : CVE-2026-31555

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - futex: Clear stale exiting pointer in futexlockpi retry path Fuzzying/stressing futexes triggered: WARNING: kernel/futex/core.c:825 at...