Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

kernel: io_uring/poll: fix signed comparison in io_poll_get_ownership()

A flaw was found in the Linux kernel's iouring/poll component. A logic error exists in the iopollgetownership function due to an incorrect signed comparison. This flaw prevents the necessary slowpath from being triggered when the IOPOLLCANCELFLAG is set, potentially leading to unexpected behavior...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: can: bcm: add locking for bcmop runtime updates CVE-2025-38004 kernel: iouring/poll: fix signed comparison in iopollgetownership CVE-2026-52933 kernel: netfilter: nat: use kfreercu to...

Linux Distros Unpatched Vulnerability : CVE-2026-80811

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - iouring/cmd: fix iovec leak when the async cmd is not recycled An ioasynccmd carries an iovec array in -vec.iovec, allocated when the vec has to grow and kept...

Linux Distros Unpatched Vulnerability : CVE-2026-80810

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - iouring/rsrc: fix folio size overflow in iovecfillbvec iovecfillbvec computes the folio size with a plain int 1: unsigned long foliosize = 1 folioshift;...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053369)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053369 advisory. In the Linux kernel, the following vulnerability has been resolved: iouring: drop any code related to SCMRIGHTS This is dead code after we dropped support for passin...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053200)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053200 advisory. In the Linux kernel, the following vulnerability has been resolved: iouring: fix overflows checks in provide buffers Colin reported before possible overflow and sign...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053416)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053416 advisory. In the Linux kernel, the following vulnerability has been resolved: iouring: add a schedule point in ioaddbuffers Looping 65535 times doing kmalloc calls can trigger...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053243)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053243 advisory. In the Linux kernel, the following vulnerability has been resolved: iouring/rw: fix missing NOWAIT check for ODIRECT start write When iouring starts a write, it'll...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053199)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053199 advisory. In the Linux kernel, the following vulnerability has been resolved: iouring/io-wq: Use setbit and testbit at worker-flags Utilize setbit and testbit on worker-flags...

SUSE CVE-2026-80810

In the Linux kernel, the following vulnerability has been resolved: iouring/rsrc: fix folio size overflow in iovecfillbvec iovecfillbvec computes the folio size with a plain int 1: unsigned long foliosize = 1 folioshift; imu-folioshift is unsigned int and comes from folioshift of the folio backin...

SUSE CVE-2026-80811

In the Linux kernel, the following vulnerability has been resolved: iouring/cmd: fix iovec leak when the async cmd is not recycled An ioasynccmd carries an iovec array in -vec.iovec, allocated when the vec has to grow and kept across recycling through ctx-cmdcache. On two paths nothing frees it a...

CVE-2026-80811

In the Linux kernel, the following vulnerability has been resolved: iouring/cmd: fix iovec leak when the async cmd is not recycled An ioasynccmd carries an iovec array in -vec.iovec, allocated when the vec has to grow and kept across recycling through ctx-cmdcache. On two paths nothing frees it a...

CVE-2026-80810

In the Linux kernel, the following vulnerability has been resolved: iouring/rsrc: fix folio size overflow in iovecfillbvec iovecfillbvec computes the folio size with a plain int 1: unsigned long foliosize = 1 folioshift; imu-folioshift is unsigned int and comes from folioshift of the folio backin...

EUVD-2026-71246

In the Linux kernel, the following vulnerability has been resolved: iouring/cmd: fix iovec leak when the async cmd is not recycled An ioasynccmd carries an iovec array in -vec.iovec, allocated when the vec has to grow and kept across recycling through ctx-cmdcache. On two paths nothing frees it a...

CVE-2026-80811 io_uring/cmd: fix iovec leak when the async cmd is not recycled

In the Linux kernel, the following vulnerability has been resolved: iouring/cmd: fix iovec leak when the async cmd is not recycled An ioasynccmd carries an iovec array in -vec.iovec, allocated when the vec has to grow and kept across recycling through ctx-cmdcache. On two paths nothing frees it a...

CVE-2026-80811

In the Linux kernel, the following vulnerability has been resolved: iouring/cmd: fix iovec leak when the async cmd is not recycled An ioasynccmd carries an iovec array in -vec.iovec, allocated when the vec has to grow and kept across recycling through ctx-cmdcache. On two paths nothing frees it a...

CVE-2026-80811

CVE-2026-80811 is a memory leak in the Linux kernel's io_uring/cmd subsystem. An io_async_cmd carries an iovec array that is allocated when the vector must grow and retained across recycling via ctx->cmd_cache. On two code paths, the iovec is never freed: io_req_uring_cleanup() only clears the...

CVE-2026-80811 io_uring/cmd: fix iovec leak when the async cmd is not recycled

In the Linux kernel, the following vulnerability has been resolved: iouring/cmd: fix iovec leak when the async cmd is not recycled An ioasynccmd carries an iovec array in -vec.iovec, allocated when the vec has to grow and kept across recycling through ctx-cmdcache. On two paths nothing frees it a...

EUVD-2026-71245

In the Linux kernel, the following vulnerability has been resolved: iouring/rsrc: fix folio size overflow in iovecfillbvec iovecfillbvec computes the folio size with a plain int 1: unsigned long foliosize = 1 folioshift; imu-folioshift is unsigned int and comes from folioshift of the folio backin...