USN-8574-3: Linux kernel vulnerabilities

It was discovered that some AMD processors did not properly clear data in the floating point divider unit during speculative execution. A local attacker could use this to expose sensitive information. CVE-2025-54505 It was discovered that some AMD Zen 2 processors did not properly isolate shared...

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

An update for kernel is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

RHEL 10 : kernel (RHSA-2026:44694)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:44694 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: net: sched: actcsum: validat...

CVE-2026-64112

In the Linux kernel, the following vulnerability has been resolved: rbd: eliminate a race in lockdwork draining on unmap Given how rbdlockaddrequest and rbdimgexclusivelock are written, lockdwork may be requeued more than it's actually needed: for example in case a new I/O request comes in while ...

CVE-2026-64112

The CVE-2026-64112 issue affects the Linux kernel’s RBD path (rbd_lock_add_request/rbd_img_exclusive_lock) where lock_dwork can be (re)queued more than needed, enabling a TOCTOU race during image unmapping. The problem arises when a new I/O request arrives during rbd_acquire_lock(), or in maybe_k...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: libceph: The calctarget function should set t-paused, rather than simply clearing it. Currently, calctarget clears t-paused if the request should no longer be paused. However, it never sets t-paused, even though it can determine...

SUSE CVE-2026-46079

In the Linux kernel, the following vulnerability has been resolved: rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after deviceadd succeeds, the error path calls rbdfreedisk directly and then later...

CVE-2026-46079

A flaw was found in the Linux kernel's Rados Block Device rbd module. When adding a new block device, a double teardown of resources can occur if the disk addition process fails. This can lead to a null-pointer dereference during cleanup operations, allowing a local attacker to cause a system...

CVE-2026-46079

In the Linux kernel, the following vulnerability has been resolved: rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after deviceadd succeeds, the error path calls rbdfreedisk directly and then later...

UBUNTU-CVE-2026-46079

In the Linux kernel, the following vulnerability has been resolved: rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after deviceadd succeeds, the error path calls rbdfreedisk directly and then later...

CVE-2026-46079

In the Linux kernel, the following vulnerability has been resolved: rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after deviceadd succeeds, the error path calls rbdfreedisk directly and then later...

CVE-2026-46079

In the Linux kernel, the following vulnerability has been resolved: rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after deviceadd succeeds, the error path calls rbdfreedisk directly and then later...

CVE-2026-46079

CVE-2026-46079 concerns the Linux kernel RBD path. The issue arises when device_add_disk() is followed by a failure in device_add_disk(); the code can call rbd_free_disk() twice and then rbd_dev_device_release(), causing a null-ptr-deref in __blk_mq_free_map_and_rqs() during blk-mq cleanup. The f...

EUVD-2026-32462

In the Linux kernel, the following vulnerability has been resolved: rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after deviceadd succeeds, the error path calls rbdfreedisk directly and then later...

CVE-2026-46079 rbd: fix null-ptr-deref when device_add_disk() fails

In the Linux kernel, the following vulnerability has been resolved: rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after deviceadd succeeds, the error path calls rbdfreedisk directly and then later...

Linux Distros Unpatched Vulnerability : CVE-2026-46079

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - rbd: fix null-ptr-deref when deviceadddisk fails dorbdadd publishes the device with deviceadd before calling deviceadddisk. If deviceadddisk fails after devicea...

PT-2026-43946

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.0.11-1.1 Description A null-pointer dereference occurs in the rbd module when device add disk fails after device add has successfully published the device. In this scenario, the error path triggers a double...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: rbd: Avoid using memory after it has been freed in dorbdadd, when rbddevcreate fails. If obtaining an ID or setting up a work queue in rbddevcreate fails, a use-after-free occurs on rbddev-rbdclient, rbddev-spec, and rbddev-opts ...

kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The havemonandosdmap function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory...

kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()

A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The havemonandosdmap function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory...