EUVD-2026-64567

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent in6devget from resurrecting inet6dev in6devget reads dev-ip6ptr under RCU and then unconditionally increments its refcount. Device teardown can clear the pointer and drop the last reference between these operations...

CVE-2026-74630 ipv6: prevent in6_dev_get() from resurrecting inet6_dev

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent in6devget from resurrecting inet6dev in6devget reads dev-ip6ptr under RCU and then unconditionally increments its refcount. Device teardown can clear the pointer and drop the last reference between these operations...

CVE-2026-74598

CVE-2026-74598 is an out-of-bounds read in the Linux kernel's IPv6 stack, specifically in rt6_route_rcv() handling of the Route Information option (RFC 4191). Both length checks are off by one: the code accepts length >= 2 and length >= 1 where RFC 4191 requires stricter bounds. A remote at...

CVE-2026-74598 ipv6: fix Route Information option length validation

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

EUVD-2026-64535

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-74598 ipv6: fix Route Information option length validation

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

SUSE CVE-2026-72348

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6tables: mark malformed IPv6 extension headers for hotdrop The ah, hbh and rt matches check that the fixed extension header is present, then use the header length field to derive the advertised extension header lengt...

SUSE CVE-2026-74581

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppressed fib6 rule result fib6rulesuppress drops a suppressed route with ip6rtputflags, but leaves res-rt6 pointing at the released rt6info. If no later rule supplies a replacement, fib6rulelookup still sees...

CVE-2026-74630: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent in6devget from resurrecting inet6dev in6devget reads dev-ip6ptr under RCU and then unconditionally increments its refcount. Device teardown can clear the pointer and drop the last reference between these operations...

PT-2026-79603

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Linux kernel where the rt6 route rcv function incorrectly validates the length of the Route Information option RFC 4191 against the prefix length due to off-by-one...

PT-2026-79635

Name of the Vulnerable Software and Affected Versions Linux kernel version 7.2-rc3 Description A use-after-free issue exists in the IPv6 implementation where the in6 dev get function reads dev-ip6 ptr under RCU Read-Copy-Update and unconditionally increments its reference count. During device...

PT-2026-79662

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the fib nlmsg size function where nexthop space is incorrectly estimated by assuming every gateway is encoded as an IPv4 RTA GATEWAY attribute. Because IPv4 routes can...

Linux Distros Unpatched Vulnerability : CVE-2026-74598

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both chec...

Linux Distros Unpatched Vulnerability : CVE-2026-74630

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv6: prevent in6devget from resurrecting inet6dev in6devget reads dev-ip6ptr under RCU and then unconditionally increments its refcount. Device teardown can...

CVE-2026-74598: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Information option length validation rt6routercv validates the Route Information option RFC 4191 length against the prefix length, but both checks are off by one. rinfo-length is the ND option length in units of 8...

CVE-2026-74581

A use-after-free vulnerability was found in the Linux kernel's IPv6 FIB rule lookup path. In fib6rulesuppress, when a route is suppressed and released via ip6rtputflags, the res-rt6 pointer is not cleared. If no later rule supplies a replacement route, fib6rulelookup returns the stale freed rt6in...

CVE-2026-74581

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppressed fib6 rule result fib6rulesuppress drops a suppressed route with ip6rtputflags, but leaves res-rt6 pointing at the released rt6info. If no later rule supplies a replacement, fib6rulelookup still sees...

AZL-97001 CVE-2026-74581 affecting package kernel for versions less than 6.6.152.1-1

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppressed fib6 rule result fib6rulesuppress drops a suppressed route with ip6rtputflags, but leaves res-rt6 pointing at the released rt6info. If no later rule supplies a replacement, fib6rulelookup still sees...

CVE-2026-74581

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppressed fib6 rule result fib6rulesuppress drops a suppressed route with ip6rtputflags, but leaves res-rt6 pointing at the released rt6info. If no later rule supplies a replacement, fib6rulelookup still sees...

UBUNTU-CVE-2026-74581

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppressed fib6 rule result fib6rulesuppress drops a suppressed route with ip6rtputflags, but leaves res-rt6 pointing at the released rt6info. If no later rule supplies a replacement, fib6rulelookup still sees...