CVE-2026-31686

CVE-2026-31686 concerns the Linux kernel kasan double-free in kasan_remove_zero_shadow related to kasan_free_pxd() handling of pxd_page() vs start of the pxd table on architectures like PowerPC with 64K pages. The issue arises when the PUD table is not page-aligned, risking double-free during mem...

PT-2026-35492

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A double-free issue exists in the Linux kernel's KASAN Kernel Address Sanitizer component. The kasan free pxd function incorrectly assumes that the page table is always aligned with stru...

Ubuntu Pro Realtime 24.04 LTS : Linux kernel (Raspberry Pi Real-time) vulnerabilities (USN-8204-1)

"The remote Ubuntu Pro Realtime 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8204-1 advisory. Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly...

USN-8179-3: Linux kernel vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013529)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013529 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: avoid device tree lookups in rtasosterm rtasosterm is called during panic. Its...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013223)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013223 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: fix possible memory leak in ibmebusbusinit If deviceregister returns error in...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013330)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013330 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/rtasflash: allow user copy to flash block cache objects With hardened usercopy enabled...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-007000)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007000 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/rtasflash: allow user copy to flash block cache objects With hardened usercopy enabled...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011232)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011232 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: avoid device tree lookups in rtasosterm rtasosterm is called during panic. Its...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013221)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013221 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/iommu: Fix notifiers being shared by PCI and VIO buses failiommusetup registers the...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-011101)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011101 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/52xx: Fix a resource leak in an error handling path The error handling path of...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010889)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010889 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: avoid scheduling in rtasosterm It's unsafe to use rtasbusydelay to handle a busy...

USN-8185-1: Linux kernel (NVIDIA) vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

USN-8179-2 linux-aws-fips, linux-fips, linux-gcp-fips vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

USN-8184-1: Linux kernel (Real-time) vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

USN-8183-1 linux-gcp, linux-gcp-6.17 vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

USN-8177-1 linux, linux-realtime vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007549)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007549 advisory. In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Whitelist dtl slub object for copying to userspace Reading the dispatch trace lo...

Ubuntu 25.10 : Linux kernel vulnerabilities (USN-8177-1)

"The remote Ubuntu 25.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8177-1 advisory. Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signatur...

USN-8163-2: Linux kernel (Azure) vulnerabilities

Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module LSM. An unprivileged local attacker could use these issues to load, replace, and remove arbitrary AppArmor profiles causing denial of service, exposure of sensitive information kernel memory, local...