Linux Distros Unpatched Vulnerability : CVE-2026-89754

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared...

CVE-2026-89754

A flaw was found in the Linux kernel's memory management mm/pagewalk component. An issue in the walkpmdrange function, where a stale walk-action state is not properly reset, can lead to duplicate walk callbacks. A local attacker could exploit this to trigger an out-of-bounds write, potentially...

CVE-2026-89754

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

DEBIAN-CVE-2026-89754

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

CVE-2026-89754

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

UBUNTU-CVE-2026-89754

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

CVE-2026-89754

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

EUVD-2026-76666

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

CVE-2026-89754 mm/pagewalk: fix stale walk->action escaping walk_pmd_range()

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

CVE-2026-89754 mm/pagewalk: fix stale walk->action escaping walk_pmd_range()

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

CVE-2026-89754

A stale state bug in the Linux kernel's mm/pagewalk subsystem, specifically in walk_pmd_range(), allows a local attacker to trigger an out-of-bounds write in __mincore_unmapped_range via the mincore syscall. When walk->action is set to ACTION_AGAIN and the corresponding PMD entry is cleared be...

PT-2026-90470

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the page walk mechanism where the walk-action variable can remain erroneously set to ACTION AGAIN when escaping the walk pmd range function. This occurs if -pmd entry...

CVE-2026-89754: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix stale walk-action escaping walkpmdrange If -pmdentry sets walk-action = ACTIONAGAIN, the pmdnone check is retried. The PMD entry may be cleared at the point of retry. In this case, if walk-ops-installpte is not...

CVE-2026-31456: Concurrent Execution using Shared Resource with Improper Synchronization

In the Linux kernel, the following vulnerability has been resolved: mm/pagewalk: fix race between concurrent split and refault The splitting of a PUD entry in walkpudrange can race with a concurrent thread refaulting the PUD leaf entry causing it to try walking a PMD range that has disappeared. A...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002695)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002695 advisory. The walkhugetlbrange function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive...