Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: ext4: replace BUGON with proper error handling in ext4readinlinefolio CVE-2026-31451 In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: gadget: fix NULL pointer dereference in epqueue...

CVE-2026-63921

CVE-2026-63921 affects the Linux kernel’s IPv6 VTI (ip6: vti) implementation. The root cause is a collision-lookup using dev_net(dev) in vti6_siocdevprivate(), which, after tunnels migrate between namespaces, can cause SIOCCHGTUNNEL to resolve against the wrong netns. This enables a scenario wher...

CVE-2026-63921 ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate().

In the Linux kernel, the following vulnerability has been resolved: ip6: vti: Use ip6tnl.net in vti6siocdevprivate. After patch 1/2 in this series, vti6update unlinks and relinks the tunnel through t-net. vti6siocdevprivate still uses devnetdev for the collision lookup. For a tunnel moved through...

SUSE SLES15 Security Update : kernel (Live Patch 55 for SUSE Linux Enterprise 15 SP4) (SUSE-SU-2026:2993-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2993-1 advisory. This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.222 fixes various security issues The following security issues were fixed: ...

SUSE SLES15 Security Update : kernel (Live Patch 41 for SUSE Linux Enterprise 15 SP5) (SUSE-SU-2026:3001-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3001-1 advisory. This update for the SUSE Linux Enterprise Kernel 5.14.21-150500.55.169 fixes various security issues The following security issues were fixed: ...

SUSE SLES15: kernel-livepatch-5_14_21-150400_24_225-default / etc (SUSE-SU-2026:3009-1)

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3009-1 advisory. This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.225 fixes various security issues The following security issues were fixed: ...

SUSE-SU-2026:3044-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2026-31771: Bluetooth: hcievent: move wake reason storage into validated event handlers bsc1264145. - CVE-2026-43038: ipv6: icmp: clear skb2-cb in...

Security update for the Linux Kernel (Live Patch 42 for SUSE Linux Enterprise 15 SP5)

This update for the SUSE Linux Enterprise Kernel 5.14.21-150500.55.172 fixes various security issues The following security issues were fixed: CVE-2026-46173: exit: prevent preemption of oopsing TASKDEAD task bsc1267723. CVE-2026-52909: ip6vti: set netnsimmutable on the fallback device bsc1268662...

SUSE-SU-2026:2997-1 Security update for the Linux Kernel (Live Patch 26 for SUSE Linux Enterprise 15 SP6)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150600.23.112 fixes various security issues The following security issues were fixed: - CVE-2026-31758: usb: usbtmc: Flush anchored URBs in usbtmcrelease bsc1264094. - CVE-2026-43037: ip6tunnel: clear skb2-cb in ip4ip6err bsc1265197. -...

SUSE-SU-2026:2993-1 Security update for the Linux Kernel (Live Patch 55 for SUSE Linux Enterprise 15 SP4)

This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.222 fixes various security issues The following security issues were fixed: - CVE-2026-46120: ip6gre: Use cached t-net in ip6erspanchangelink bsc1267893. - CVE-2026-46173: exit: prevent preemption of oopsing TASKDEAD task...

Security update for the Linux Kernel (Live Patch 54 for SUSE Linux Enterprise 15 SP4)

This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.219 fixes various security issues The following security issues were fixed: CVE-2026-31758: usb: usbtmc: Flush anchored URBs in usbtmcrelease bsc1264094. CVE-2026-43037: ip6tunnel: clear skb2-cb in ip4ip6err bsc1265197...

SUSE SLES15 Security Update : kernel RT (Live Patch 15 for SUSE Linux Enterprise 15 SP7) (SUSE-SU-2026:2862-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2862-1 advisory. This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.54 fixes various security issues The following security issues were fixed: -...

SUSE-SU-2026:2888-1 Security update for the Linux Kernel (Live Patch 52 for SUSE Linux Enterprise 15 SP4)

This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.209 fixes various security issues The following security issues were fixed: - CVE-2026-23393: bridge: cfm: Fix race condition in peermep deletion bsc1260524. - CVE-2026-31533: net/tls: fix use-after-free in -EBUSY error path of...

SUSE-SU-2026:2863-1 Security update for the Linux Kernel RT (Live Patch 16 for SUSE Linux Enterprise 15 SP7)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.59 fixes various security issues The following security issues were fixed: - CVE-2026-46120: ip6gre: Use cached t-net in ip6erspanchangelink bsc1267893. - CVE-2026-46173: exit: prevent preemption of oopsing TASKDEAD task bsc1267723. ...

SUSE-SU-2026:2840-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to fix various security issues The following security issues were fixed: - CVE-2026-31771: Bluetooth: hcievent: move wake reason storage into validated event handlers bsc1264145. - CVE-2026-43038: ipv6: icmp: clear skb2-cb in...

SUSE CVE-2026-53221

In the Linux kernel, the following vulnerability has been resolved: ip6vti: fix incorrect tunnel matching in vti6tnllookup In vti6tnllookup, when an exact match for a tunnel fails, the code falls back to searching for wildcard tunnels: - Tunnels matching the packet's local address, with any remot...

CVE-2026-53221

In the Linux kernel, the following vulnerability has been resolved: ip6vti: fix incorrect tunnel matching in vti6tnllookup In vti6tnllookup, when an exact match for a tunnel fails, the code falls back to searching for wildcard tunnels: - Tunnels matching the packet's local address, with any remot...

CVE-2026-53221

In the Linux kernel, the following vulnerability has been resolved: ip6vti: fix incorrect tunnel matching in vti6tnllookup In vti6tnllookup, when an exact match for a tunnel fails, the code falls back to searching for wildcard tunnels: - Tunnels matching the packet's local address, with any remot...

PT-2026-52316

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ip6 vti module where the vti6 tnl lookup function fails to correctly validate tunnels during fallback searches. When an exact tunnel match fails, the system search...

Linux Distros Unpatched Vulnerability : CVE-2026-52909

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ip6vti: set netnsimmutable on the fallback device. john1988 and Noam Rathaus reported that vti6initnet does not set the netnsimmutable flag on the per-netns...