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: fs/smb/client: fix out-of-bounds read in cifssanitizeprepath CVE-2026-43112 kernel: net: mana: Fix double destroyworkqueue on service rescan PCI path CVE-2026-43276 kernel: Linux kernel:...

CVE-2026-53349

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconntrack: destroy stale expectfn expectations on unregister NAT helpers such as nfnath323 store a raw pointer to module text in exp-expectfn e.g. ipnatq931expect. nfcthelperexpectfnunregister only unlinks the callba...

CVE-2026-53278

A flaw was found in the Linux kernel's armmpam component. This vulnerability occurs when the destroycomponentcfg function is called from mpamdisable before the configuration array has been properly allocated. This can lead to a null pointer dereference, potentially causing a system crash and...

DEBIAN-CVE-2026-53278

In the Linux kernel, the following vulnerability has been resolved: armmpam: Check whether the config array is allocated before destroying it destroycomponentcfg is called to free the configuration array. It uses the embedded 'garbage' structure, which means the array has to be allocated. If...

CVE-2026-53278

In the Linux kernel, the following vulnerability has been resolved: armmpam: Check whether the config array is allocated before destroying it destroycomponentcfg is called to free the configuration array. It uses the embedded 'garbage' structure, which means the array has to be allocated. If...

CVE-2026-53278

In the Linux kernel, the following vulnerability has been resolved: armmpam: Check whether the config array is allocated before destroying it destroycomponentcfg is called to free the configuration array. It uses the embedded 'garbage' structure, which means the array has to be allocated. If...

UBUNTU-CVE-2026-53278

In the Linux kernel, the following vulnerability has been resolved: armmpam: Check whether the config array is allocated before destroying it destroycomponentcfg is called to free the configuration array. It uses the embedded 'garbage' structure, which means the array has to be allocated. If...

CVE-2026-53278

In the Linux kernel, the following vulnerability has been resolved: armmpam: Check whether the config array is allocated before destroying it destroycomponentcfg is called to free the configuration array. It uses the embedded 'garbage' structure, which means the array has to be allocated. If...

EUVD-2026-39883

In the Linux kernel, the following vulnerability has been resolved: armmpam: Check whether the config array is allocated before destroying it destroycomponentcfg is called to free the configuration array. It uses the embedded 'garbage' structure, which means the array has to be allocated. If...

EUVD-2026-39645

A flaw was found in KubeVirt's migration proxy. When spec.configuration.migrations.disableTLS is set to true on the KubeVirt custom resource, the target virt-handler binds a plain TCP listener on all interfaces 0.0.0.0/:: on a random port with no authentication, peer allow-list, or handshake toke...

CVE-2026-53226

In the Linux kernel, the following vulnerability has been resolved: gpio: rockchip: fix generic IRQ chip leak on remove The driver allocates domain generic chips using irqallocdomaingenericchips during probe. However, on driver remove/teardown, the generic chips are not automatically freed when t...

CVE-2026-53197

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix ABBA deadlock in iptfsdestroystate iptfsdestroystate calls hrtimercancel while holding a spinlock that the timer callback also acquires, leading to an ABBA deadlock on SMP systems. For the output timer iptfstimer...

CVE-2026-53141

In the Linux kernel, the following vulnerability has been resolved: drm/v3d: Fix global performance monitor reference counting In the SETGLOBAL ioctl, v3dperfmonfind bumps the reference count on the perfmon it returns, but v3dperfmonsetglobalioctl and v3dperfmondelete fail to release that referen...

UBUNTU-CVE-2026-53141

In the Linux kernel, the following vulnerability has been resolved: drm/v3d: Fix global performance monitor reference counting In the SETGLOBAL ioctl, v3dperfmonfind bumps the reference count on the perfmon it returns, but v3dperfmonsetglobalioctl and v3dperfmondelete fail to release that referen...

CVE-2026-53141

In the Linux kernel, the following vulnerability has been resolved: drm/v3d: Fix global performance monitor reference counting In the SETGLOBAL ioctl, v3dperfmonfind bumps the reference count on the perfmon it returns, but v3dperfmonsetglobalioctl and v3dperfmondelete fail to release that referen...

CVE-2026-53212

The CVE-2026-53212 issue affects the Linux kernel nft_tunnel implementation within netfilter, where nft_tunnel_obj_destroy() used metadata_dst_free() to free a metadata_dst, bypassing dst_entry refcount accounting. This could leave in-flight packets that hold references (via dst_hold()) dangling,...

CVE-2026-53212

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfttunnel: fix use-after-free on object destroy nfttunnelobjdestroy calls metadatadstfree which directly kfrees the metadatadst, ignoring the dstentry refcount. Packets that took a reference via dsthold in...

CVE-2026-53197

CVE-2026-53197 affects the Linux kernel xfrm/iptfs path. The bug is an ABBA deadlock: iptfs_destroy_state() cancels an hrtimer while holding a spinlock that the timer callback also tries to acquire. The output timer (iptfs_timer) path holds x->lock before cancel, while the timer callback (iptf...

CVE-2026-53197 xfrm: iptfs: fix ABBA deadlock in iptfs_destroy_state()

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: fix ABBA deadlock in iptfsdestroystate iptfsdestroystate calls hrtimercancel while holding a spinlock that the timer callback also acquires, leading to an ABBA deadlock on SMP systems. For the output timer iptfstimer...

EUVD-2026-39232

In the Linux kernel, the following vulnerability has been resolved: drm/v3d: Fix global performance monitor reference counting In the SETGLOBAL ioctl, v3dperfmonfind bumps the reference count on the perfmon it returns, but v3dperfmonsetglobalioctl and v3dperfmondelete fail to release that referen...