K000161867: Linux kernel vulnerabilities CVE-2026-23291, CVE-2026-23292, CVE-2026-23298, and CVE-2026-23304

Security Advisory Description CVE-2026-23291 In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: properly drop the usb interface reference on disconnect When the device is disconnected from the driver, there is a "dangling" reference count on the usb interface that was...

SUSE-SU-2026:2632-1 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-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. - CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to fix various security issues The following security issues were fixed: CVE-2025-10263: arm64: errata: Mitigate TLBI errata on various Arm CPUs bsc1266290. CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished delayed work...

UBUNTU-CVE-2026-53227

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix possible kfreeskb of ERRPTR After the patch in the "Fixes" tag, the allocation of the "reply" skb can happen either before or after locking the ovsmutex. However, error cleanups still follow the classical...

CVE-2026-53256

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: hold listener socket in rfcommconnectind rfcommgetsockbychannel scans rfcommsklist under the list lock, but returns the selected listener after dropping that lock without taking a reference. rfcommconnectind th...

CVE-2026-53227

CVE-2026-53227 affects the Linux kernel net/openvswitch path. The issue arises when allocating the reply skb after taking ovs_mutex, where an error path can leave the skb with an ERR_PTR and later free it during cleanup, leading to a possible invalid free. The fix sets the pointer to NULL after s...

CVE-2026-53163

In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip removewaiter when waiter is not enqueued syzbot triggered the following splat in removewaiter via FUTEXCMPREQUEUEPI: KASAN: null-ptr-deref in range 0x0000000000000a88-0x0000000000000a8f...

CVE-2026-53163

In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip removewaiter when waiter is not enqueued syzbot triggered the following splat in removewaiter via FUTEXCMPREQUEUEPI: KASAN: null-ptr-deref in range 0x0000000000000a88-0x0000000000000a8f...

EUVD-2026-39254

In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip removewaiter when waiter is not enqueued syzbot triggered the following splat in removewaiter via FUTEXCMPREQUEUEPI: KASAN: null-ptr-deref in range 0x0000000000000a88-0x0000000000000a8f...

EUVD-2026-39251

In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix use-after-free race in fastrpcmapcreate fastrpcmaplookup returns a raw pointer after releasing fl-lock. The caller fastrpcmapcreate then calls fastrpcmapget krefgetunlesszero on this unprotected pointer. A...

Linux Distros Unpatched Vulnerability : CVE-2026-53035

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf, sockmap: Fix afunix iter deadlock bpfiterunixseqshow may deadlock when locksockfast takes the fast path and the iter prog attempts to update a sockmap...

Linux Distros Unpatched Vulnerability : CVE-2026-53034

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - bpf, sockmap: Fix afunix null-ptr-deref in proto update unixstreamconnect sets skstate WRITEONCEsk-skstate, TCPESTABLISHED before it assigns a peer unixpeersk =...

EUVD-2026-38903

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix afunix iter deadlock bpfiterunixseqshow may deadlock when locksockfast takes the fast path and the iter prog attempts to update a sockmap. Which ends up spinning at sockmapupdateelem's bhlocksock: WARNING:...

EUVD-2026-38847

In the Linux kernel, the following vulnerability has been resolved: net: psp: check for device unregister when creating assoc pspassocdevicegetlocked obtains a pspdev reference via pspdevgetforsock which uses pspdevtryget under RCU; it then acquires psd-lock and drops the reference. Before the lo...

CVE-2026-53117

In the Linux kernel, the following vulnerability has been resolved: s390/cio: use generic driveroverride infrastructure When a driver is probed through driverattach, the bus' match callback is called without the device lock held, thus accessing the driveroverride field without a lock, which can...

CVE-2026-53119

In the Linux kernel, the following vulnerability has been resolved: platform/wmi: use generic driveroverride infrastructure When a driver is probed through driverattach, the bus' match callback is called without the device lock held, thus accessing the driveroverride field without a lock, which c...

CVE-2026-53118

In the Linux kernel, the following vulnerability has been resolved: vdpa: use generic driveroverride infrastructure When a driver is probed through driverattach, the bus' match callback is called without the device lock held, thus accessing the driveroverride field without a lock, which can cause...

CVE-2026-53115

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: use generic driveroverride infrastructure When a driver is probed through driverattach, the bus' match callback is called without the device lock held, thus accessing the driveroverride field without a lock, which ca...

CVE-2026-53054

In the Linux kernel, the following vulnerability has been resolved: drm/msm: Fix VMBIND UNMAP locking Wrong argument meant that the objs involved in UNMAP ops were not always getting locked. Since NOSHARE objs share a common resv with the VM which is always locked this would only show up with...

CVE-2026-53049

In the Linux kernel, the following vulnerability has been resolved: gfs2: add some missing log locking Function gfs2logd calls the log flushing functions gfs2ail1start, gfs2ail1wait, and gfs2ail1empty without holding sdp-sdlogflushlock, but these functions require exclusion against concurrent...