uaf-exploit-cve-2026-23415

CVE-2026-23415 PoC Proof of concept for CVE-2026-23415 , a use-after-free vulnerability in the Linux kernel futex subsystem. About the vulnerability A race condition exists between futexkeytonodeopt and vmareplacepolicy. While the futex code reads a virtual memory area's NUMA memory policy, anoth...

Exploit for Use After Free in Linux Linux_Kernel

CVE-2026-23415 PoC Proof...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: - mm/mempolicy: No longer allows the illegal combination of MPOLFNUMABALANCING and MPOLLOCAL in mbind. - syzbot reported access to uninitialized memory in mbind. The issue arose with the commit bda420b98505 “NUMA balancing:...

CVE-2026-23415 futex: Fix UaF between futex_key_to_node_opt() and vma_replace_policy()

In the Linux kernel, the following vulnerability has been resolved: futex: Fix UaF between futexkeytonodeopt and vmareplacepolicy During futexkeytonodeopt execution, vma-vmpolicy is read under speculative mmap lock and RCU. Concurrently, mbind may call vmareplacepolicy which frees the old mempoli...

CVE-2026-23415: Use After Free

In the Linux kernel, the following vulnerability has been resolved: futex: Fix UaF between futexkeytonodeopt and vmareplacepolicy During futexkeytonodeopt execution, vma-vmpolicy is read under speculative mmap lock and RCU. Concurrently, mbind may call vmareplacepolicy which frees the old mempoli...

CVE-2026-23415: Use After Free

In the Linux kernel, the following vulnerability has been resolved: futex: Fix UaF between futexkeytonodeopt and vmareplacepolicy During futexkeytonodeopt execution, vma-vmpolicy is read under speculative mmap lock and RCU. Concurrently, mbind may call vmareplacepolicy which frees the old mempoli...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001244)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001244 advisory. Incorrect error handling in the setmempolicy and mbind compat syscalls in mm/mempolicy.c in the Linux kernel through 4.10.9 allows local users to obtain sensitive...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002809)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002809 advisory. Incorrect error handling in the setmempolicy and mbind compat syscalls in mm/mempolicy.c in the Linux kernel through 4.10.9 allows local users to obtain sensitive...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-002995)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002995 advisory. Incorrect error handling in the setmempolicy and mbind compat syscalls in mm/mempolicy.c in the Linux kernel through 4.10.9 allows local users to obtain sensitive...

Linux 6.4 mbind() Use-After-Free / Race Condition

There is a race between mbind and VMA-locked page faults that leads to a use-after-free condition. tested on git master, at commit 57012c57536f Summary: There's a race between mbind and VMA-locked page faults, leading to UAF. You can quickly hit this with a straightforward reproducer that just...

SUSE CVE-2021-47462

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

CVE-2021-47462

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

DEBIAN-CVE-2021-47462

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

CVE-2021-47462

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

UBUNTU-CVE-2021-47462

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

CVE-2021-47462

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

CVE-2021-47462 mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

CVE-2021-47462

CVE-2021-47462 affects the Linux kernel mempolicy/memory policy handling. The root cause was an invalid combination check for MPOL_MODE_FLAGS: MPOL_F_NUMA_BALANCING may only pair with MPOL_BIND, but the check existed only in do_set_mempolicy(). The patch moves this validation into sanitize_mpol_f...

CVE-2021-47462: Use of Uninitialized Resource

In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOLFNUMABALANCING | MPOLLOCAL in mbind syzbot reported access to unitialized memory in mbind 1 Issue came with commit bda420b98505 "numa balancing: migrate on fault among multiple bound nodes"...

CVE-2024-26696

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix hang in nilfslookupdirtydatabuffers Syzbot reported a hang issue in migratepagesbatch called by mbind and nilfslookupdirtydatabuffers called in the log writer of nilfs2. While migratepagesbatch locks a folio and waits...