kernel: Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration

A flaw was found in the Linux kernel. A local attacker could exploit a deadlock vulnerability due to incorrect lock ordering between foliolock and immaprwsem when migrating hugetlb file-backed folios. This could lead to hung tasks and potential system-wide stalls, resulting in a Denial of Service...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

RHEL 9 : kernel (RHSA-2026:11313)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:11313 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Linux kernel: Denial of Servi...

CVE-2026-31575

In the Linux kernel, the following vulnerability has been resolved: mm/userfaultfd: fix hugetlb fault mutex hash calculation In mfillatomichugetlb, linearpageindex is used to calculate the page index for hugetlbfaultmutexhash. However, linearpageindex returns the index in PAGESIZE units, while...

CVE-2026-31575

The CVE-2026-31575 issue affects the Linux kernel mm/userfaultfd code, where hugetlb fault mutex hashing used linear_page_index() (PAGE_SIZE units) instead of huge-page units, causing different mutexes to be used for addresses within the same huge page. The mismatch can allow races between faulti...

CVE-2026-31575 mm/userfaultfd: fix hugetlb fault mutex hash calculation

In the Linux kernel, the following vulnerability has been resolved: mm/userfaultfd: fix hugetlb fault mutex hash calculation In mfillatomichugetlb, linearpageindex is used to calculate the page index for hugetlbfaultmutexhash. However, linearpageindex returns the index in PAGESIZE units, while...

CVE-2026-31575 mm/userfaultfd: fix hugetlb fault mutex hash calculation

In the Linux kernel, the following vulnerability has been resolved: mm/userfaultfd: fix hugetlb fault mutex hash calculation In mfillatomichugetlb, linearpageindex is used to calculate the page index for hugetlbfaultmutexhash. However, linearpageindex returns the index in PAGESIZE units, while...

CVE-2026-31575

In the Linux kernel, the following vulnerability has been resolved: mm/userfaultfd: fix hugetlb fault mutex hash calculation In mfillatomichugetlb, linearpageindex is used to calculate the page index for hugetlbfaultmutexhash. However, linearpageindex returns the index in PAGESIZE units, while...

CVE-2026-31575

In the Linux kernel, the following vulnerability has been resolved: mm/userfaultfd: fix hugetlb fault mutex hash calculation In mfillatomichugetlb, linearpageindex is used to calculate the page index for hugetlbfaultmutexhash. However, linearpageindex returns the index in PAGESIZE units, while...

Linux Distros Unpatched Vulnerability : CVE-2026-31575

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mm/userfaultfd: fix hugetlb fault mutex hash calculation In mfillatomichugetlb, linearpageindex is used to calculate the page index for hugetlbfaultmutexhash...

PT-2026-34927

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the mfill atomic hugetlb function, the linear page index function is used to calculate the page index for hugetlb fault mutex hash. Because linear page index returns the index in PAGE...

kernel: Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration

A flaw was found in the Linux kernel. A local attacker could exploit a deadlock vulnerability due to incorrect lock ordering between foliolock and immaprwsem when migrating hugetlb file-backed folios. This could lead to hung tasks and potential system-wide stalls, resulting in a Denial of Service...

RHEL 9 : kernel (RHSA-2026:10108)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:10108 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Bluetooth: MGMT: Fix possible...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013747)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013747 advisory. In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix folio is still mapped when deleted Migration may be raced with fallocating hole...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013829)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013829 advisory. In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: fix UAF in hugetlbhandleuserfault The vmalock and hugetlbfaultmutex are dropped befo...

Unity Linux 20.1050e / 20.1070e Security Update: kernel (UTSA-2026-011165)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011165 advisory. In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: avoid soft lockup when mprotect to large memory area When calling mprotect to a larg...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011103)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011103 advisory. In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: fix UAF in hugetlbhandleuserfault The vmalock and hugetlbfaultmutex are dropped befo...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013043)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013043 advisory. In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: avoid soft lockup when mprotect to large memory area When calling mprotect to a larg...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011211)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011211 advisory. In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix folio is still mapped when deleted Migration may be raced with fallocating hole...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007502)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007502 advisory. In the Linux kernel, the following vulnerability has been resolved: mm: hugetlb: avoid soft lockup when mprotect to large memory area When calling mprotect to a larg...