CVE-2026-63968

A flaw was found in the Linux kernel's IPv6 networking stack. A local attacker could trigger an infinite loop within the fib6selectpath function. This occurs when a writer removes an entry from a list without proper synchronization with readers, causing the list traversal to never terminate. This...

SUSE CVE-2026-63968

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6selectpath Found while auditing the same pattern Sashiko reported in rt6fillnode 1. Apply the same fix as commit f8d8ce1b515a "ipv6: fix possible infinite loop in fib6infousesdev". Writers...

CVE-2026-63968

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6selectpath Found while auditing the same pattern Sashiko reported in rt6fillnode 1. Apply the same fix as commit f8d8ce1b515a "ipv6: fix possible infinite loop in fib6infousesdev". Writers...

CVE-2026-63969

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in rt6fillnode Sashiko reported this issue 1. Apply the same fix as commit f8d8ce1b515a "ipv6: fix possible infinite loop in fib6infousesdev". Writers holding tb6lock can listdelrcu&rt-fib6sibling...

CVE-2026-63969 ipv6: fix possible infinite loop in rt6_fill_node()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in rt6fillnode Sashiko reported this issue 1. Apply the same fix as commit f8d8ce1b515a "ipv6: fix possible infinite loop in fib6infousesdev". Writers holding tb6lock can listdelrcu&rt-fib6sibling...

PT-2026-61285

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the IPv6 implementation where an infinite loop can occur within the fib6 select path function. This happens because writers holding the tb6 lock may execute list del rcu...

SUSE CVE-2026-53214

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix a potential NPD in cleanupprefixroute addrconfgetprefixroute can return the fib6nullentry sentinel entry which has a NULL fib6table pointer. Therefore, before setting the route's expiration time, check that we are not...

CVE-2026-53214 ipv6: Fix a potential NPD in cleanup_prefix_route()

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix a potential NPD in cleanupprefixroute addrconfgetprefixroute can return the fib6nullentry sentinel entry which has a NULL fib6table pointer. Therefore, before setting the route's expiration time, check that we are not...

PT-2026-52309

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A Null Pointer Dereference NPD can occur in the IPv6 implementation. The function addrconf get prefix route may return a fib6 null entry sentinel entry that contains a NULL fib6 table...

CVE-2026-53012 nexthop: fix IPv6 route referencing IPv4 nexthop

In the Linux kernel, the following vulnerability has been resolved: nexthop: fix IPv6 route referencing IPv4 nexthop syzbot reported a panic 1 2. When an IPv6 nexthop is replaced with an IPv4 nexthop, the hasv4 flag of all groups containing this nexthop is not updated. This is because...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fixed a mismatch in the count of ECMP siblings when clearing RTFADDRCONF. The syzbot reported a kernel bug in fib6addrt2node, when adding an IPv6 route. 0 The commit f72514b3c569 "ipv6: Clear RA flags when adding a static...

CVE-2026-46260

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix out-of-bound access in fib6addrt2node. syzbot reported out-of-bound read in fib6addrt2node. 0 When IPv6 route is created with RTANHID, struct fib6info does not have the trailing struct fib6nh. The cited commit started t...

CVE-2026-46260

The CVE-2026-46260 entry is supported by multiple connected sources detailing a kernel IPv6 out-of-bounds read when creating an IPv6 route with RTA_NH_ID, due to fib6_info not containing trailing fib6_nh and an unsafe read of iter->fib6_nh. The fix adds a check of iter->nh before dereferenc...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-006775)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006775 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix infinite recursion in fib6dumpdone. syzkaller reported infinite recursive calls of...

CVE-2026-23300

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: fix panic when IPv4 route references loopback IPv6 nexthop When a standalone IPv6 nexthop object is created with a loopback device e.g., "ip -6 nexthop add id 100 dev lo", fib6nhinit misclassifies it as a reject route...

CVE-2026-23200

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix ECMP sibling count mismatch when clearing RTFADDRCONF syzbot reported a kernel BUG in fib6addrt2node when adding an IPv6 route. 0 Commit f72514b3c569 "ipv6: clear RA flags when adding a static route" introduced logic to...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fixed a memory leak in nhcpcpurthoutput within fibchecknhv6gw. The function fibchecknhv6gw assumes that fib6nhinit will clean up everything when it fails. The commit 7dd73168e273 „ipv6: Always allocate pcpu memory in fib6nh...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: A possible infinite loop has been fixed in fib6infousesdev. fib6infousesdev appears to rely on RCU without proper protection. Similar to the previous fix in rt6nlmsgsize, we need to ensure that fib6delroute or fib6addrt2nod...

Azure Linux 3.0 Security Update: kernel (CVE-2024-56703)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-56703 advisory. - In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix soft lockups in fib6selectpath...

PT-2026-8208

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel's IPv6 implementation related to ECMP Equal-Cost Multi-Path routing. Specifically, a mismatch in sibling counts can occur when clearing the RTF ADDRCONF...