CVE-2026-63795

In the Linux kernel, the following vulnerability has been resolved: 9p: avoid putting oldfid in p9clientwalk error path When p9clientwalk is called with clone set to false, fid aliases oldfid. If the walk subsequently fails after the request has been sent, the error path jumps to clunkfid, which...

CVE-2026-63795

In the Linux kernel, the following vulnerability has been resolved: 9p: avoid putting oldfid in p9clientwalk error path When p9clientwalk is called with clone set to false, fid aliases oldfid. If the walk subsequently fails after the request has been sent, the error path jumps to clunkfid, which...

CVE-2026-63795 9p: avoid putting oldfid in p9_client_walk() error path

In the Linux kernel, the following vulnerability has been resolved: 9p: avoid putting oldfid in p9clientwalk error path When p9clientwalk is called with clone set to false, fid aliases oldfid. If the walk subsequently fails after the request has been sent, the error path jumps to clunkfid, which...

PT-2026-61111

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the 9p filesystem implementation where the p9 client walk function incorrectly handles file identifiers fids during error paths. When the function is called with the...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net/9p: A dedicated spinlock is used for transfd. I'm shamelessly copying the explanation from Tetsuo Handa’s suggested patch1 slightly reworded: syzbot reports inconsistent lock states in p9reqput2. For p9tagremove, when execute...

CVE-2026-52906

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 9p: fix access mode flags being ORed instead of replaced

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,...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: 9p: Fixed the fid refcount leak in v9fsvfsgetlink. We now check for protocol versions that are later than required, after a fid has been obtained. Simply move the version check to an earlier stage...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021528)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021528 advisory. In the Linux kernel, the following vulnerability has been resolved: 9p: set req refcount to zero to avoid uninitialized usage When a new request is allocated, the...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-013739)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013739 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...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007620)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007620 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...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-006629)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006629 advisory. In the Linux kernel, the following vulnerability has been resolved: net: 9p: fix refcount leak in p9readwork error handling p9reqput need to be called when...

Astra Linux - уязвимость в linux-6.12

In the Linux kernel, the following vulnerability has been resolved: 9p/transfd: p9fdrequest: kick rx thread if EPOLLIN p9readwork doesn't set Rworksched and doesn't do scheduleworkm-rq if listempty&m-reqlist. However, if the pipe is full, we need to read more data and this used to work prior to...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-993034)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-993034 advisory. In the Linux kernel, the following vulnerability has been resolved: net/9p: Fix a potential socket leak in p9socketopen Both p9fdcreatetcp and p9fdcreateunix will ca...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP6 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...

Unity Linux 20.1050e Security Update: kernel (UTSA-2025-991140)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-991140 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...

EUVD-2025-201640

In the Linux kernel, the following vulnerability has been resolved: 9p/transfd: p9fdrequest: kick rx thread if EPOLLIN p9readwork doesn't set Rworksched and doesn't do scheduleworkm-rq if listempty&m-reqlist. However, if the pipe is full, we need to read more data and this used to work prior to...

CVE-2025-40305

In the Linux kernel, the following vulnerability has been resolved: 9p/transfd: p9fdrequest: kick rx thread if EPOLLIN p9readwork doesn't set Rworksched and doesn't do scheduleworkm-rq if listempty&m-reqlist. However, if the pipe is full, we need to read more data and this used to work prior to...

CVE-2025-40305 9p/trans_fd: p9_fd_request: kick rx thread if EPOLLIN

In the Linux kernel, the following vulnerability has been resolved: 9p/transfd: p9fdrequest: kick rx thread if EPOLLIN p9readwork doesn't set Rworksched and doesn't do scheduleworkm-rq if listempty&m-reqlist. However, if the pipe is full, we need to read more data and this used to work prior to...

CVE-2025-40305

CVE-2025-40305 concerns Linux kernel 9p/trans_fd handling. Root cause: p9_fd_request relied on EPOLLOUT checks and wakeups via p9_pollwake/p9_poll_mux; after a pipe-read optimization, unnecessary wakeups were avoided by changing logic, reducing EPOLLIN-driven scheduling. The fix changes p9_fd_req...