PT-2026-94572

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the NFC NCI subsystem where nci close device and nci rx work can concurrently call the nci data exchange complete function. This occurs because rx work is no...

CVE-2026-68397

The CVE-2026-68397 issue affects the Linux kernel net/iucv code: afiucv_hs_rcv() may pass a destination socket to handlers without holding a reference, allowing a concurrent close to free the socket before the handler dereferences it (e.g., sk->sk_data_ready()) because AF_IUCV sockets aren’t R...

CVE-2026-46158

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADDADDR rtx: always decrease sk refcount When an ADDADDR is retransmitted, the sk is held in skresettimer. It should then be released in all cases at the end. Some unlikely checks were returning directly instead of...

CVE-2026-46158

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADDADDR rtx: always decrease sk refcount When an ADDADDR is retransmitted, the sk is held in skresettimer. It should then be released in all cases at the end. Some unlikely checks were returning directly instead of...

CVE-2026-46158 mptcp: pm: ADD_ADDR rtx: always decrease sk refcount

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADDADDR rtx: always decrease sk refcount When an ADDADDR is retransmitted, the sk is held in skresettimer. It should then be released in all cases at the end. Some unlikely checks were returning directly instead of...

EUVD-2026-25522

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: add missing return after LLCPCLOSED checks In nfcllcprecvhdlc and nfcllcprecvdisc, when the socket state is LLCPCLOSED, the code correctly calls releasesock and nfcllcpsockput but fails to return. Execution falls throu...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013232)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013232 advisory. In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix repeated calls to sockput when msg has moredata In tcpbpfsendverdict redirectio...

CVE-2026-31408

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in scorecvframe due to missing sockhold scorecvframe reads conn-sk under scoconnlock but immediately releases the lock without holding a reference to the socket. A concurrent close can free the...

CVE-2026-31408

CVE-2026-31408 is a Linux kernel Bluetooth SCO use-after-free in sco_recv_frame(), where conn->sk is accessed after releasing sco_conn_lock() without holding a reference. The fix uses sco_sock_hold() to take a reference before unlocking and adds sock_put() on exit paths. Connected advisories s...

SUSE CVE-2025-40258

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race condition in mptcpschedulework syzbot reported use-after-free in mptcpschedulework 1 Issue here is that mptcpschedulework schedules a work, then gets a refcount on sk-skrefcnt if the work was scheduled. This...

AZL-71380 CVE-2025-40258 affecting package kernel for versions less than 6.6.119.3-1

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race condition in mptcpschedulework syzbot reported use-after-free in mptcpschedulework 1 Issue here is that mptcpschedulework schedules a work, then gets a refcount on sk-skrefcnt if the work was scheduled. This...

CVE-2025-40258

CVE-2025-40258 is a Linux kernel use-after-free caused by a race in mptcp_schedule_work(). The issue occurs when mptcp_schedule_work() schedules a task and then takes a reference to sk->sk_refcnt; if mptcp_worker() runs first, the refcount may be released prematurely. The fixed pattern shown i...

CVE-2022-50536

CVE-2022-50536 affects the Linux kernel’s BPF sockmap path. In tcp_bpf_send_verdict() redirection, the eval variable is set to __SK_REDIRECT after sending apply_bytes data; if msg.has_more_data, sock_put() can be called multiple times, risking a use-after-free via refcount misuse. The issue is fi...

CVE-2022-50536

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix repeated calls to sockput when msg has moredata In tcpbpfsendverdict redirection, the eval variable is assigned to SKREDIRECT after the applybytes data is sent, if msg has moredata, sockput will be called multip...

CVE-2022-50536 bpf, sockmap: Fix repeated calls to sock_put() when msg has more_data

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix repeated calls to sockput when msg has moredata In tcpbpfsendverdict redirection, the eval variable is assigned to SKREDIRECT after the applybytes data is sent, if msg has moredata, sockput will be called multip...

EUVD-2025-32819

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix repeated calls to sockput when msg has moredata In tcpbpfsendverdict redirection, the eval variable is assigned to SKREDIRECT after the applybytes data is sent, if msg has moredata, sockput will be called multip...

CVE-2023-53585 bpf: reject unhashed sockets in bpf_sk_assign

In the Linux kernel, the following vulnerability has been resolved: bpf: reject unhashed sockets in bpfskassign The semantics for bpfskassign are as follows: sk = somelookupfunc bpfskassignskb, sk bpfskreleasesk That is, the sk is not consumed by bpfskassign. The function therefore needs to make...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: net: Use sockgenput when skstate is TCPTIMEWAIT. It is possible for a pointer of type struct inettimewaitsock to be returned from the functions inetlookupestablished and inet6lookupestablished. This can cause a crash when the...

UBUNTU-CVE-2025-37894

In the Linux kernel, the following vulnerability has been resolved: net: use sockgenput when skstate is TCPTIMEWAIT It is possible for a pointer of type struct inettimewaitsock to be returned from the functions inetlookupestablished and inet6lookupestablished. This can cause a crash when the...

PT-2024-21541

Name of the Vulnerable Software and Affected Versions Linux kernel versions 6.8.0-rc6-syzkaller-00159-gc055fc00c07b and earlier Description The issue is related to the handling of reference counts in the Linux kernel's TCP connection establishment process. Specifically, when the bhash2 allocation...