CVE-2026-45866

In the Linux kernel, the following vulnerability has been resolved: serial: caif: fix use-after-free in caifserial ldiscclose There is a use-after-free bug in caifserial where handletx may access ser-tty after the tty has been freed. The race condition occurs between ldiscclose and packet...

UBUNTU-CVE-2026-45866

In the Linux kernel, the following vulnerability has been resolved: serial: caif: fix use-after-free in caifserial ldiscclose There is a use-after-free bug in caifserial where handletx may access ser-tty after the tty has been freed. The race condition occurs between ldiscclose and packet...

CVE-2026-45866 serial: caif: fix use-after-free in caif_serial ldisc_close()

In the Linux kernel, the following vulnerability has been resolved: serial: caif: fix use-after-free in caifserial ldiscclose There is a use-after-free bug in caifserial where handletx may access ser-tty after the tty has been freed. The race condition occurs between ldiscclose and packet...

CVE-2026-45866 serial: caif: fix use-after-free in caif_serial ldisc_close()

In the Linux kernel, the following vulnerability has been resolved: serial: caif: fix use-after-free in caifserial ldiscclose There is a use-after-free bug in caifserial where handletx may access ser-tty after the tty has been freed. The race condition occurs between ldiscclose and packet...

CVE-2026-45866

The CVE-2026-45866 case concerns a use-after-free in the Linux kernel caif_serial ldisc path. A race between ldisc_close() and packet transmission can cause handle_tx() to access ser->tty after the tty is freed, due to tty_kref_put() being invoked in ldisc_close() while the network device may ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: reftracker: Implement use-after-free detection. Whenever reftrackerdirinit is called, mark the struct reftrackerdir as “dead”. Test the “dead” status using reftrackeralloc and reftrackerfree. This should detect bugs in the...

Astra Linux – Vulnerability in Linux 5.10

A double-free flaw was discovered in the Linux kernel’s TUN/TAP device driver functionality, particularly in how a user registers the device when the registernetdevice function fails with the NETDEVREGISTER notifier. This flaw allows a local user to crash the system or potentially escalate their...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net: lapbether: ignore ops-locked netdevs Syzkaller managed to trigger a lock dependency in xsknotify via registernetdevice. As discussed in 0, using registernetdevice in notifiers is problematic, so we skip adding the lapbeth fo...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: hvnetvsc: The NETDEVICEREGISTER call was missed when registering VF in netvscprobe. If the hvnetvsc driver is unloaded and reloaded, the NETDEVICEREGISTER handler cannot successfully register VF, as the register call is received...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftchainfilter: handling of NETDEVUNREGISTER for the inet/ingress basechain. Remove netdevice from the inet/ingress basechain in case NETDEVUNREGISTER event is reported; otherwise, a stale reference to netdevice remain...

Astra Linux - Vulnerability in linux-5.10

In the Linux kernel, the following vulnerability has been resolved: net: wwan: mhi: fix memory leak in mhimbimdellink The MHI driver registers a network device without setting the needsfreenetdev flag, and does NOT call freenetdev when unregistering the network device, causing a memory leak. This...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: net-sysfs: added a check to ensure netdevice is present before using speedshow. When disabling the netdevice or during system shutdown, a panic may occur when accessing the sysfs path, because the device has already been removed...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ax25: Fixed the netdev refcount issue. The devtracker has been added to ax25cb in ax25bind. When the ax25 device is detached, the devtracker of ax25cb should be deallocated in ax25killbydevice, instead of the devtracker of...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Wifi: virtwifi: The SETNETDEVDEV function should be removed to avoid use-after-free issues. Currently, we execute SETNETDEVDEVdev, &priv-lowerdev-dev for the virtwifi network devices. However, unregistering a virtwifi device in...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: can: j1939: prevents deadlock by changing j1939sockslock to rwlock. The following 3 locks may race against each other, causing a deadlock situation in the Syzbot bug report: - j1939sockslock - activesessionlistlock -...

SUSE CVE-2026-43167

In the Linux kernel, the following vulnerability has been resolved: xfrm: always flush state and policy upon NETDEVUNREGISTER event syzbot is reporting that "struct xfrmstate" refcount is leaking. unregisternetdevice: waiting for netdevsim0 to become free. Usage count = 2 reftracker:...

EUVD-2026-27728

In the Linux kernel, the following vulnerability has been resolved: xfrm: always flush state and policy upon NETDEVUNREGISTER event syzbot is reporting that "struct xfrmstate" refcount is leaking. unregisternetdevice: waiting for netdevsim0 to become free. Usage count = 2 reftracker:...

CVE-2026-43234

In the Linux kernel, the following vulnerability has been resolved: team: avoid NETDEVCHANGEMTU event when unregistering slave syzbot is reporting unregisternetdevice: waiting for netdevsim0 to become free. Usage count = 3 reftracker: netdev@ffff88807dcf8618 has 1/2 users at netdevtrackeralloc...

CVE-2026-43167

In the Linux kernel, the following vulnerability has been resolved: xfrm: always flush state and policy upon NETDEVUNREGISTER event syzbot is reporting that "struct xfrmstate" refcount is leaking. unregisternetdevice: waiting for netdevsim0 to become free. Usage count = 2 reftracker:...

CVE-2026-43234

CVE-2026-43234 concerns the Linux kernel team driver. The issue arises when unregistering a slave from a team interface while a NETDEV_CHANGEMTU event is pending, potentially causing a deadlock/resource exhaustion and system unresponsiveness as shown by reproduction steps involving creating a tea...