CVE-2026-52906

A flaw was found in the Linux kernel's 9p filesystem. When mounting, access mode flags were incorrectly combined instead of being replaced, leading to an invalid configuration. This issue causes root users to be unable to perform privileged operations like changing file ownership, effectively...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: netfs: Fixed a kernel bug in netfslimititer, specifically for ITERKVEC iterators. When a process crashes and the kernel writes a core dump to a 9P filesystem, kernelwrite creates an ITERKVEC iterator. This iterator calls...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: fs/9p: Fixed the issue of NULL pointer dereferencing when using mkdir. When a 9p tree was mounted with the posixacl option, the parent directory had a default ACL set for its subdirectories. For example: setfacl -m...

CVE-2026-43249 9p/xen: protect xen_9pfs_front_free against concurrent calls

In the Linux kernel, the following vulnerability has been resolved: 9p/xen: protect xen9pfsfrontfree against concurrent calls The xenwatch thread can race with other back-end change notifications and call xen9pfsfrontfree twice, hitting the observed general protection fault due to a double-free...

PT-2026-37589

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists where the xenwatch thread can conflict with other back-end change notifications. This may lead to the xen 9pfs front free function being called twice, resulting i...

CVE-2026-31438

A flaw was found in the Linux kernel's netfs component. When a process crashes and the kernel attempts to write a core dump to a 9P filesystem, the netfslimititer function does not properly handle ITERKVEC iterators. This oversight can lead to a kernel BUG, resulting in a system crash and a Denia...

CVE-2026-31437

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix NULL pointer dereference in netfsunbufferedwrite on retry When a write subrequest is marked NETFSSREQNEEDRETRY, the retry path in netfsunbufferedwrite unconditionally calls stream-preparewrite without checking if it is...

CVE-2026-31438 netfs: Fix kernel BUG in netfs_limit_iter() for ITER_KVEC iterators

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix kernel BUG in netfslimititer for ITERKVEC iterators When a process crashes and the kernel writes a core dump to a 9P filesystem, kernelwrite creates an ITERKVEC iterator. This iterator reaches netfslimititer via...

PT-2026-34343

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix kernel BUG in netfs limit iter for ITER KVEC iterators When a process crashes and the kernel writes a core dump to a 9P filesystem, kernel write creates an ITER KVEC iterator. This iterator reaches netfs limit iter via...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : kvmtool vulnerabilities (USN-8172-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8172-1 advisory. It was discovered that kvmtool did not properly manage memory under certain circumstances. A malicious guest attacker...

USN-8172-1 kvmtool vulnerabilities

It was discovered that kvmtool did not properly manage memory under certain circumstances. A malicious guest attacker could use this issue to cause kvmtool to crash, leading to a denial of service, or possibly execute arbitrary code on the host system. CVE-2021-45464 It was discovered that kvmtoo...

USN-8033-7 linux-intel-iotg-5.15, linux-xilinx-zynqmp vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Nios II architecture; - Sun Sparc architecture; - User-Mode Linux UML; - x86 architecture; - Block layer subsystem;...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003764)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003764 advisory. An issue was discovered in the Linux kernel before 5.0.4. The 9p filesystem did not protect isizewrite properly, which causes an isizeread infinite loop and denial o...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: net/9p: Fixed buffer overflow in the USB transport layer. There is a buffer overflow vulnerability in the USB 9pfs transport layer. In this case, inconsistencies in size validation between packet header parsing and actual data...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000272)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000272 advisory. An issue was discovered in the Linux kernel before 5.0.4. The 9p filesystem did not protect isizewrite properly, which causes an isizeread infinite loop and denial o...

USN-7887-1: Linux kernel (Raspberry Pi Real-time) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - ACPI drivers; - Ublk userspace block driver; -...

USN-7887-1 linux-raspi-realtime vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - ACPI drivers; - Ublk userspace block driver; -...

USN-7835-6: Linux kernel (AWS) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - ACPI drivers; - Ublk userspace block driver; -...

USN-7835-6 linux-aws-6.8 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - ACPI drivers; - Ublk userspace block driver; -...

USN-7835-5: Linux kernel (Oracle) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - ACPI drivers; - Ublk userspace block driver; -...