DirtyAH6

DirtyAH6 CVE-2026-80844 Writeup !WARNING The PoC is provided solely to help defenders, maintainers, and authorized security teams validate patches, mitigations, detections, and exposure on systems they own or are explicitly authorized to test. You are solely responsible for ensuring that your use...

Blackash-CVE-2025-14558

🚨 CVE-2025-14558 : Critical Remote Code Execution in FreeBSD IPv6 🧠 Overview CVE-2025-14558 is a critical Remote Code Execution RCE vulnerability affecting FreeBSD systems that use IPv6 router solicitation services. A flaw in how untrusted network input is handled allows attackers to execute...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fixed soft lockups in fib6selectpath under high next hop changes. Soft lockups were observed on a cluster of Linux-based edge routers located in a highly dynamic environment. Using the bird service, these routers continuous...

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

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: Fixed a NULL pointer dereference in ip6rtgetdevrcu. l3mdevmasterdevrcu can return NULL when the slave device is being un-slaved from a VRF. All other callers handle this issue, but we lost the fallback to loopback in...

CVE-2026-97940

A flaw was found in the Linux kernel's IPv6 routing subsystem. A race condition during route iteration termination can allow an internal routing table walker structure to remain on an active list after its associated memory is released. A local user could exploit this flaw during concurrent route...

EUVD-2026-71294

In the Linux kernel, the following vulnerability has been resolved: xfrm: ah6: validate routing header segmentsleft AH6 rearranges routing-header addresses before computing or verifying the ICV. ipv6rearrangerthdr assumes that segmentsleft is not larger than the number of addresses described by t...

kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer

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...

kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer

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...

RHEL 8 : kernel (RHSA-2026:60485)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:60485 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: net: ipv6: use-after-free in...

kernel: net: ipv6: use-after-free in fib6_rule_suppress due to stale res->rt6 pointer

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...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098967)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098967 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix soft lockups in fib6selectpath under high next hop churn Soft lockups have been observe...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: nexthop: The nh-lock is taken during the f6ilist walk in the replace operation, but it is replaced promptly without holding the nh-lock. In this way, the RTNL-serialized nexthop replace operation occurs without holding the...

AZL-97214 CVE-2026-74598 affecting package kernel for versions less than 6.6.152.1-1

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-2026-74581

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...

CVE-2026-74581 net: ipv6: clear suppressed fib6 rule result

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...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100547)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100547 advisory. 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 nextho...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099917)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099917 advisory. 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 nextho...

UBUNTU-CVE-2026-74562

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...