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

In the Linux kernel, the following vulnerability has been resolved: mpls: The rcudereferencertnl function was used in mplsrouteinputrcu. As reported by syzbot 0, mplsrouteinputrcu can be called from mplsgetroute, which operates under RTNL. Additionally, net-mpls.platformlabel is only updated unde...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: phy: The register Phy ledtriggers operation occurs during the PHY probe, to avoid an AB-BA deadlock. An AB-BA deadlock occurs when both LEDsTRIGGERNETDEV and LEDTRIGGERPHY are enabled. c 1362.049207...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid double-rtnllock ELP metric worker The batadvvelpgetthroughput function might be called when the RTNL lock is already held. This could be problematic when the work queue item is cancelled using...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: igb: Revert the rtnllock function that causes deadlock. The commit 6faee3d4ee8b “igb: Add a lock to avoid data race” adds rtnllock to eliminate a false data race as shown below: Released from device detachment | Used from netdev...

UBUNTU-CVE-2026-81001

In the Linux kernel, the following vulnerability has been resolved: slip: fix use-after-free in slsync slipdevs stores bare netdevice pointers and takes no reference on them. slsync and slalloc walk that table from slipopen under rtnllock, while an entry is dropped by slfreenetdev, which slsetup...

CVE-2026-74726

In the Linux kernel, the following vulnerability has been resolved: bonding: alb: re-check primaryispromisc under RTNL in bondalbmonitor bondalbmonitor reads primaryispromisc under RCU, then drops RCU and takes RTNL via rtnltrylock before undoing the promiscuity it set on the active slave. In tha...

CVE-2026-74656

In the Linux kernel, the following vulnerability has been resolved: ipv4: fix use-after-free in fibnhcupdatemtu fibnhcupdatemtu walks the nexthop exception table under RTNL, but RTNL does not serialize this walk with PMTU exception updates. The walk uses rcudereferenceprotected with a constant tr...

CVE-2026-74726 bonding: alb: re-check primary_is_promisc under RTNL in bond_alb_monitor

In the Linux kernel, the following vulnerability has been resolved: bonding: alb: re-check primaryispromisc under RTNL in bondalbmonitor bondalbmonitor reads primaryispromisc under RCU, then drops RCU and takes RTNL via rtnltrylock before undoing the promiscuity it set on the active slave. In tha...

PT-2026-79705

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the Linux kernel within the tc new tfilter function. This occurs when two threads attempt to create filters such as a u32 filter and a flower filter in the sam...

SUSE CVE-2026-74543

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

CVE-2026-74543

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

AZL-96258 CVE-2026-74543 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

CVE-2026-74562 nexthop: take nh->lock for f6i_list walks in replace check and notify

In the Linux kernel, the following vulnerability has been resolved: nexthop: take nh-lock for f6ilist walks in replace check and notify fib6checknhlist and nexthopreplacenotify walk nh-f6ilist during an RTNL-serialized nexthop replace without holding nh-lock. IPv6 RTMNEWROUTE/RTMDELROUTE run...

CVE-2026-74543 net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister()

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

CVE-2026-74543 net: udp_tunnel: fix memory leak in udp_tunnel_nic_unregister()

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

EUVD-2026-59736

In the Linux kernel, the following vulnerability has been resolved: net: udptunnel: fix memory leak in udptunnelnicunregister syzbot reported a memory leak 1 in the UDP tunnel NIC offload code. When device registration fails e.g. in registernetdevice, netdev core unwinds by sending a single...

CVE-2026-74543

CVE-2026-74543 concerns the Linux kernel UDP tunnel NIC offload code. The issue: when device registration fails, the code may leak a struct udp_tunnel_nic due to an early return if utn->work_pending is set, because no subsequent NETDEV_UNREGISTER rebroadcast occurs. The fix, as described in co...

CVE-2026-72338

In the Linux kernel, the following vulnerability has been resolved: net/sched: actpedit: fix TOCTOU heap OOB write in tc offload There is a TOCTOU race condition in flower lockless approach between sizing a flowrule buffer and filling it. [email protected] reports: The clsflower...

PT-2026-72995

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak exists in the UDP tunnel NIC offload code. When device registration fails in register netdevice, the udp tunnel nic unregister function may return early if the utn-work...

PT-2026-72314

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free race condition exists in the ISO Transport IsoTP protocol implementation. The isotp release function attempts to look up a bound network device using dev get by index an...