UBUNTU-CVE-2026-53157

In the Linux kernel, the following vulnerability has been resolved: net: phonet: free phonetdevice after RCU grace period phonetdevicedestroy removes a phonetdevice from the per-net device list with listdelrcu, but frees it immediately. RCU readers walking the same list can still hold a pointer t...

UBUNTU-CVE-2026-53264

In the Linux kernel, the following vulnerability has been resolved: net/sched: actapi: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a race with an associated action. Let's illustrate with CPU0 running NEWTFILTER and...

UBUNTU-CVE-2026-53270

In the Linux kernel, the following vulnerability has been resolved: ipvs: clear the svc scheduler ptr early on edit ipvseditservice while unbinding the old scheduler clears the svc-scheduler ptr after the scheduler module initiates RCU callbacks. This can cause packets to use the old scheduler at...

CVE-2026-53270

In the Linux kernel, the following vulnerability has been resolved: ipvs: clear the svc scheduler ptr early on edit ipvseditservice while unbinding the old scheduler clears the svc-scheduler ptr after the scheduler module initiates RCU callbacks. This can cause packets to use the old scheduler at...

CVE-2026-53270 ipvs: clear the svc scheduler ptr early on edit

In the Linux kernel, the following vulnerability has been resolved: ipvs: clear the svc scheduler ptr early on edit ipvseditservice while unbinding the old scheduler clears the svc-scheduler ptr after the scheduler module initiates RCU callbacks. This can cause packets to use the old scheduler at...

EUVD-2026-39221

In the Linux kernel, the following vulnerability has been resolved: ipvs: clear the svc scheduler ptr early on edit ipvseditservice while unbinding the old scheduler clears the svc-scheduler ptr after the scheduler module initiates RCU callbacks. This can cause packets to use the old scheduler at...

EUVD-2026-39199

In the Linux kernel, the following vulnerability has been resolved: net: airoha: Fix use-after-free in metadata dst teardown airohametadatadstfree runs metadatadstfree which frees the metadatadst with kfree immediately, bypassing the RCU grace period. In the RX path, skbdstsetnoref sets a...

CVE-2026-53248

In the Linux kernel, the following vulnerability has been resolved: net: airoha: Fix use-after-free in metadata dst teardown airohametadatadstfree runs metadatadstfree which frees the metadatadst with kfree immediately, bypassing the RCU grace period. In the RX path, skbdstsetnoref sets a...

CVE-2026-53247 net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtkethsoc: Fix use-after-free in metadata dst teardown mtkfreedev calls metadatadstfree which frees the metadatadst with kfree immediately, bypassing the RCU grace period. In the RX path, skbdstsetnoref sets a...

CVE-2026-53157

In the Linux kernel, the following vulnerability has been resolved: net: phonet: free phonetdevice after RCU grace period phonetdevicedestroy removes a phonetdevice from the per-net device list with listdelrcu, but frees it immediately. RCU readers walking the same list can still hold a pointer t...

CVE-2026-53157

In the Linux kernel, the following vulnerability has been resolved: net: phonet: free phonetdevice after RCU grace period phonetdevicedestroy removes a phonetdevice from the per-net device list with listdelrcu, but frees it immediately. RCU readers walking the same list can still hold a pointer t...

CVE-2026-53157 net: phonet: free phonet_device after RCU grace period

In the Linux kernel, the following vulnerability has been resolved: net: phonet: free phonetdevice after RCU grace period phonetdevicedestroy removes a phonetdevice from the per-net device list with listdelrcu, but frees it immediately. RCU readers walking the same list can still hold a pointer t...

PT-2026-52343

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the airoha network driver during metadata dst teardown. The function airoha metadata dst free invokes metadata dst free, which uses kfree to release...

PT-2026-52253

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A slab-use-after-free issue exists in the phonet device destroy function. The function removes a phonet device from the per-net device list using list del rcu but frees the memory...

EUVD-2026-38815

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix refcount saturation and potential UAF in qrtrportremove In qrtrportremove, the socket reference count is decremented via sockput before the port is removed from the qrtrports XArray and before the RCU grace period...

CVE-2026-52947

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix refcount saturation and potential UAF in qrtrportremove In qrtrportremove, the socket reference count is decremented via sockput before the port is removed from the qrtrports XArray and before the RCU grace period...

CVE-2026-52947

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix refcount saturation and potential UAF in qrtrportremove In qrtrportremove, the socket reference count is decremented via sockput before the port is removed from the qrtrports XArray and before the RCU grace period...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables – Release flowtable after the rcu grace period with an error. The function synchronizercu is called after unregistering the hooks from the error path. This is because a hook that already references this...

samba: vfs_worm does not block directory modification

A flaw was found in Samba’s vfsworm module. The module is intended to provide write-once, read-many WORM protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share...

CVE-2026-52910

The CVE-2026-52910 issue is in the Linux kernel where a cBPF reuseport program may be freed immediately when detached from a reuseport group, without waiting for an RCU grace period. This can lead to a use-after-free and potential memory corruption when a concurrent UDP send crosses the fast path...