Linux Distros Unpatched Vulnerability : CVE-2026-89555

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mpls: reload header after pskbmaypull mplsselectmultipath calls mplsmultipathhash to choose a nexthop when an MPLS route has multiple nexthops. While walking th...

DEBIAN-CVE-2026-89555

In the Linux kernel, the following vulnerability has been resolved: mpls: reload header after pskbmaypull mplsselectmultipath calls mplsmultipathhash to choose a nexthop when an MPLS route has multiple nexthops. While walking the MPLS label stack, the hash routine caches hdr for the current label...

AZL-100389 CVE-2026-89555 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: mpls: reload header after pskbmaypull mplsselectmultipath calls mplsmultipathhash to choose a nexthop when an MPLS route has multiple nexthops. While walking the MPLS label stack, the hash routine caches hdr for the current label...

CVE-2026-89555

In the Linux kernel, the following vulnerability has been resolved: mpls: reload header after pskbmaypull mplsselectmultipath calls mplsmultipathhash to choose a nexthop when an MPLS route has multiple nexthops. While walking the MPLS label stack, the hash routine caches hdr for the current label...

UBUNTU-CVE-2026-89555

In the Linux kernel, the following vulnerability has been resolved: mpls: reload header after pskbmaypull mplsselectmultipath calls mplsmultipathhash to choose a nexthop when an MPLS route has multiple nexthops. While walking the MPLS label stack, the hash routine caches hdr for the current label...

CVE-2026-89555 mpls: reload header after pskb_may_pull()

In the Linux kernel, the following vulnerability has been resolved: mpls: reload header after pskbmaypull mplsselectmultipath calls mplsmultipathhash to choose a nexthop when an MPLS route has multiple nexthops. While walking the MPLS label stack, the hash routine caches hdr for the current label...

CVE-2026-89555 mpls: reload header after pskb_may_pull()

In the Linux kernel, the following vulnerability has been resolved: mpls: reload header after pskbmaypull mplsselectmultipath calls mplsmultipathhash to choose a nexthop when an MPLS route has multiple nexthops. While walking the MPLS label stack, the hash routine caches hdr for the current label...

CVE-2026-89555

CVE-2026-89555 is a use-after-free in the Linux kernel's MPLS subsystem. In mpls_select_multipath(), a cached header pointer (hdr) is not reloaded after pskb_may_pull() reallocates the skb head via pskb_expand_head(), leaving hdr pointing to freed memory. A remote attacker can trigger the bug by ...

PT-2026-90271

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A slab-use-after-free issue exists in the Linux kernel within the MPLS multipath selection process. The function mpls select multipath utilizes mpls multipath hash to select a nexthop...