CVE-2026-68174

The vulnerability CVE-2026-68174 affects the Linux kernel tracing subsystem. In struct trace_event_call, the module pointer and the refcnt atomic share a union, so for dynamic events (kprobe, uprobe, fprobe, eprobe, wprobe) the refcnt may be non-zero and cause call->module to appear as a small...

EUVD-2026-55275

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix union collision of module and refcnt for dynamic events In 'struct traceeventcall', the 'module' pointer and the 'refcnt' atomic variable share the same memory space in a union. For dynamic events, the union member i...

CVE-2026-68170 mptcp: fix stale skb->sk reference on subflow close

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix stale skb-sk reference on subflow close The backlog list is updated by mptcpdataready under mptcpdatalock. The cleanup of backlog references to a closing subflow, however, was performed in mptcpclosessk, before...

CVE-2026-68170

CVE-2026-68170, affecting Linux kernel MPTCP, describes a use-after-free risk caused by a stale backlog backlog entry referencing a closing subflow. The issue arises because backlog cleanup was performed in mptcp_close_ssk() without holding the ssk lock or mptcp_data_lock(), while concurrent RX p...

CVE-2026-68138

The CVE-2026-68138 issue concerns a race in the Linux kernel networking scheduler (net/sched) where qdisc_rtab_list and a non-atomic refcnt are mutated without proper locking. The historical RTNL mutex was supposed to serialize rate-table lookups, inserts, and frees, but CLS_FLOWER/TCF_PROTO_OPS_...

CVE-2026-68126

The CVE-2026-68126 vulnerability affects the Linux kernel mac802154 path by dereferencing the scanned sub-interface (sdata->dev) after the RCU read unlock and after the rtnl is dropped, leading to a use-after-free when DEL_INTERFACE or PHY removal unregisters the interface. The root cause is t...

CVE-2026-68122 ovpn: fix peer refcount leak in TCP error paths

In the Linux kernel, the following vulnerability has been resolved: ovpn: fix peer refcount leak in TCP error paths When either the TCP RX or TX error path calls ovpnpeerhold followed by schedulework&peer-tcp.deferdelwork, and the work item is already pending from the other path, schedulework...

EUVD-2026-55503

In the Linux kernel, the following vulnerability has been resolved: ovpn: fix peer refcount leak in TCP error paths When either the TCP RX or TX error path calls ovpnpeerhold followed by schedulework&peer-tcp.deferdelwork, and the work item is already pending from the other path, schedulework...

CVE-2026-68122

CVE-2026-68122: Linux kernel ovpn code has a race in TCP error paths where ovpn_peer_hold() refs can be leaked if schedule_work() is already pending. The fix is to check schedule_work() return value on both RX/TX error paths and drop the extra reference with ovpn_peer_put() when the work is alrea...

CVE-2026-68095

The CVE-2026-68095 entry affects Linux kernel fuse-uring, describing a race between registration and connection abortion that could leak the ring, queue, and ent if not properly synchronized. The concrete fix is to check fch->connected under fch->lock after the created ent has grabbed a ref...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: media: mtk-mdp: A reference leak bug was fixed in mtkmdpremove. In mtkmdpprobe, vpugetplatdevice increases the reference count of the returned platform device. Add platformdeviceput to prevent the reference leak...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: slimbus: core: fix device reference leak on report present Slimbus devices can be allocated dynamically upon receiving report-present messages. Be sure to release the reference taken when checking for already registered devices...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: fixed the iloc.bh leak in ext4xattr inodeupdateref The error branch of ext4xattr inodeupdateref forgot to release the refcount for iloc.bh. This issue was discovered during code review...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Release the per-CPU pgmap reference when vminsertpage fails. When vminsertpage fails in p2pmemallocmmap, p2pmemallocmmap does not invoke percpurefput to free the per-CPU reference to pgmap acquired after...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: RDMA/rxe: Fixed a race condition in QP timer handlers I encountered the following warning: WARNING: drivers/infiniband/sw/rxe/rxetask.c:249 at rxeschedtask+0x1c8/0x238 rdmarxe, CPU0: swapper/0/0 … libsha1 last unloaded:...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrumrouter: Fix neighbor use-after-free We sometimes encounter situations where a use-after-free occurs when dereferencing a neighbor pointer. The issue seems to arise because the driver stores a pointer to the neighbo...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bpf: Fixed a UAF issue in bpftrampolinelinkcgroupshim. The root cause of this bug is that when bpflinkput reduces the refcount of shimlink-link.link to zero, the resource is considered released, but it may still be referenced via...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Remove the improper idxdfree The call to idxdfree introduces a duplicate putdevice call, leading to a reference count underflow: refcountt: underflow; use-after-free. WARNING: CPU: 15, PID: 4428, at...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: AppArmor: Fixed a race condition related to the dereference of rawdata objects. There is a race condition that leads to a “use-after-free” situation: Since the rawdata inodes are not counted for their references, an attacker can...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: - For the media module, in the mtk-mdp component, error handling in the probe function has been fixed. - The function mtkmdpunregisterm2mdevice has been added to the error handling path to prevent resource leaks. - A check for...