Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: 9p: Setting the refcount to zero was added to avoid uninitialized usage. When a new request is allocated, the refcount will be zero if the request is reused. However, if the request is newly allocated from a slab structure, it...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the implementation of the 9p passthrough filesystem 9pfs in QEMU. The 9pfs server did not prevent the opening of special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared...

EUVD-2026-35415

In the Linux kernel, the following vulnerability has been resolved: 9p: fix access mode flags being ORed instead of replaced Since commit 1f3e4142c0eb "9p: convert to the new mount API", v9fsapplyoptions applies parsed mount flags with |= onto flags already set by v9fssessioninit. For 9P2000.L,...

CVE-2026-52906

CVE-2026-52906 (Linux kernel 9p/v9fs) : The issue arises from how 9p options are applied during mounts. After commit 1f3e4142, v9fs_apply_options() uses |= to combine new flags with those already set by v9fs_session_init(), which for 9P2000.L defaults to V9FS_ACCESS_CLIENT. When a user mounts wit...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: 9p/xen: fixed the issue of releasing the IRQ twice. Kernel logs indicate that the IRQ was released twice. The correct device ID must be passed during the IRQ release process. Dominique: removed the confusing variable “reset” to 0...

CVE-2026-43249

The CVE-2026-43249 entry describes a race in the Linux kernel 9p/xen frontend: xenwatch and backend change notifications can concurrently call xen_9pfs_front_free, causing a double-free and a general protection fault. The fixes guard the teardown path so only a single caller releases the front-en...

CVE-2026-31437

A flaw was found in the Linux kernel's netfs component. When a write operation is retried, the netfsunbufferedwrite function can attempt to access a non-existent function, leading to a NULL pointer dereference. This vulnerability can be triggered by specific filesystem configurations, such as 9P,...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010958)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010958 advisory. In the Linux kernel, the following vulnerability has been resolved: net/9p: fix double req put in p9fdcancelled Syzkaller reports a KASAN issue as below: general...

SUSE-SU-2026:20496-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and 6.1 kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2022-50253: bpf: make sure skb-len != 0 when redirecting to a tunneling device bsc1249912. - CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow ...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003797)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003797 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...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-993166)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-993166 advisory. In the Linux kernel, the following vulnerability has been resolved: 9p/transfd: always use ONONBLOCK read/write syzbot is reporting hung task at p9fdclose 1, for...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 kernel was updated to fix various security issues The following security issues were fixed: CVE-2022-50253: bpf: make sure skb-len != 0 when redirecting to a tunneling device bsc1249912. CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in...

Ubuntu: Security Advisory (USN-7906-3)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-7906-2: Linux kernel (GCP) 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: - x86 architecture; - Cryptographic API; - Android drivers; - TTY drivers; - F2FS file system; - 9P file system netwo...

USN-7906-1 linux, linux-aws, linux-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: - x86 architecture; - Cryptographic API; - Android drivers; - TTY drivers; - F2FS file system; - 9P file system netwo...

net/9p: fix double req put in p9_fd_cancelled

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UBUNTU-CVE-2025-40027

In the Linux kernel, the following vulnerability has been resolved: net/9p: fix double req put in p9fdcancelled Syzkaller reports a KASAN issue as below: general protection fault, probably for non-canonical address 0xfbd59c0000000021: 0000 1 PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access...

Linux Distros Unpatched Vulnerability : CVE-2025-40027

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/9p: fix double req put in p9fdcancelled Syzkaller reports a KASAN issue as below: general protection fault, probably for non-canonical address...

9p: add missing locking around taking dentry fid list

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Linux Distros Unpatched Vulnerability : CVE-2019-16413

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...