RLSA-2026:64775 Important: kernel security, bug fix, and enhancement 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: ipv6: add NULL checks for idev in SRv6 paths CVE-2026-23442 kernel: udp: Fix wildcard bind conflict check when using...

RLSA-2026:64808 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...

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: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. 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...

CVE-2026-80920: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: iouring: defer eventfd signaling when queued from a wakeup handler ioreqlocalworkadd signals the CQ ring eventfd inline when it is the one to push the first entry onto -worklist. For DEFERTASKRUN rings that add is frequently done...

RHEL 9 : kernel (RHSA-2026:65708)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:65708 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: rxrpc: Fix potential UAF afte...

RockyLinux 9 : kernel (RLSA-2026:64808)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:64808 advisory. kernel: can: bcm: add locking for bcmop runtime updates CVE-2025-38004 kernel: iouring/poll: fix signed comparison in iopollgetownership CVE-2026-52933...

Linux Distros Unpatched Vulnerability : CVE-2026-80920

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - iouring: defer eventfd signaling when queued from a wakeup handler ioreqlocalworkadd signals the CQ ring eventfd inline when it is the one to push the first ent...

PT-2026-89090

In the Linux kernel, the following vulnerability has been resolved: io uring: defer eventfd signaling when queued from a wakeup handler io req local work add signals the CQ ring eventfd inline when it is the one to push the first entry onto -work list. For DEFER TASKRUN rings that add is frequent...

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: 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-2026-80810

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;...

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...

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-2026-053200)

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-2026-053199)

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...

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-2026-053416)

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...