The vulnerability of the mm/shmem component in the Linux operating system’s kernel allows a hacker to cause a service failure.

The vulnerability of the mm/shmem component in Linux kernel relates to the simultaneous execution using shared resources with incorrect synchronization. Exploiting this vulnerability can allow an attacker to cause service failures...

CVE-2026-23161: Concurrent Execution using Shared Resource with Improper Synchronization

In the Linux kernel, the following vulnerability has been resolved: mm/shmem, swap: fix race of truncate and swap entry split The helper for shmem swap freeing is not handling the order of swap entries correctly. It uses xacmpxchgirq to erase the swap entry, but it gets the entry order before tha...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002350)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002350 advisory. mm/shmem.c in the Linux kernel through 3.15.1 does not properly implement the interaction between range notification and hole punching, which allows local users to...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002267)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002267 advisory. Use-after-free vulnerability in the shmemremountfs function in mm/shmem.c in the Linux kernel before 3.7.10 allows local users to gain privileges or cause a denial o...

CVE-2025-38241 mm/shmem, swap: fix softlockup with mTHP swapin

In the Linux kernel, the following vulnerability has been resolved: mm/shmem, swap: fix softlockup with mTHP swapin Following softlockup can be easily reproduced on my test machine with: echo always /sys/kernel/mm/transparenthugepage/hugepages-64kB/enabled swapon /dev/zram0 zram0 is a 48G swap...

CVE-2025-38241: Improper Locking

In the Linux kernel, the following vulnerability has been resolved: mm/shmem, swap: fix softlockup with mTHP swapin Following softlockup can be easily reproduced on my test machine with: echo always /sys/kernel/mm/transparenthugepage/hugepages-64kB/enabled swapon /dev/zram0 zram0 is a 48G swap...

CVE-2024-53136

In the Linux kernel, the following vulnerability has been resolved: mm: revert "mm: shmem: fix data-race in shmemgetattr" Revert d949d1d14fa2 "mm: shmem: fix data-race in shmemgetattr" as suggested by Chuck 1. It is causing deadlocks when accessing tmpfs over NFS. As Hugh commented, "added just t...

CVE-2024-40949 mm: shmem: fix getting incorrect lruvec when replacing a shmem folio

In the Linux kernel, the following vulnerability has been resolved: mm: shmem: fix getting incorrect lruvec when replacing a shmem folio When testing shmem swapin, I encountered the warning below on my machine. The reason is that replacing an old shmem folio with a new one causes memcgroupmigrate...

Unbreakable Enterprise kernel security update

4.14.35-2047.521.4 - tcp: Tunables for TCP delayed ack min and max timers Venkat Venkatsubra Orabug: 34883100 4.14.35-2047.521.3 - Revert 'random: use expired timer rather than wq for mixing fast pool' Saeed Mirzamohammadi Orabug: 34918228 4.14.35-2047.521.2 - RDS/IB: Fix the misplaced counter...