UBUNTU-CVE-2026-74398

In the Linux kernel, the following vulnerability has been resolved: ipv6: addrconf: bail out of dadfailure when state is no longer POSTDAD addrconfdadfailure transitions ifp-state from DAD to POSTDAD via addrconfdadend, which drops ifp-lock on return. The lock is re-acquired after...

CVE-2026-74398 ipv6: addrconf: bail out of dad_failure when state is no longer POSTDAD

In the Linux kernel, the following vulnerability has been resolved: ipv6: addrconf: bail out of dadfailure when state is no longer POSTDAD addrconfdadfailure transitions ifp-state from DAD to POSTDAD via addrconfdadend, which drops ifp-lock on return. The lock is re-acquired after...

CVE-2026-74398

In the Linux kernel, the following vulnerability has been resolved: ipv6: addrconf: bail out of dadfailure when state is no longer POSTDAD addrconfdadfailure transitions ifp-state from DAD to POSTDAD via addrconfdadend, which drops ifp-lock on return. The lock is re-acquired after...

CVE-2026-74398 ipv6: addrconf: bail out of dad_failure when state is no longer POSTDAD

In the Linux kernel, the following vulnerability has been resolved: ipv6: addrconf: bail out of dadfailure when state is no longer POSTDAD addrconfdadfailure transitions ifp-state from DAD to POSTDAD via addrconfdadend, which drops ifp-lock on return. The lock is re-acquired after...

EUVD-2026-49593

In the Linux kernel, the following vulnerability has been resolved: ipv6: ndisc: fix NULL deref in acceptuntrackedna acceptuntrackedna re-fetches the inet6dev with in6devgetdev and dereferences idev-cnf.acceptuntrackedna without a NULL check, even though its only caller ndiscrecvna already fetche...

CVE-2026-64538 ipv6: Fix null-ptr-deref in fib6_nh_mtu_change().

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix null-ptr-deref in fib6nhmtuchange. fib6nhmtuchange re-fetches idev via in6devgetarg-dev and dereferences idev-cnf.mtu6 without a NULL check. addrconfifdown clears dev-ip6ptr with RCUINITPOINTER after rt6disableip has...

CVE-2026-64538

CVE-2026-64538 concerns a Linux kernel vulnerability where fib6_nh_mtu_change() dereferences idev->cnf.mtu6 after re-fetching idev with __in6_dev_get(arg->dev) without a NULL check. This can occur because addrconf_ifdown() clears dev->ip6_ptr after tb6_lock is released, allowing an RA-dr...

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

The CVE-2026-53214 entry concerns the Linux kernel IPv6 code. The vulnerability occurs when addrconf_get_prefix_route() can return the fib6_null_entry sentinel, which has a NULL fib6_table pointer. Before setting a route’s expiration time, the code must verify that it is not operating on the fib6...

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...

EUVD-2026-39305

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...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ip6mr: Fixed an UAF issue in ip6mrskDone when addrconfinitnet failed. If the initialization of devconfall fails during the call to addrconfinitnet, the pointer devconfall is released. Calling ip6mrskDone to release the network...

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: ICMP: Prevent possible NULL dereferencing from icmpbuildprobe. The first issue involves a double call to indevgetrcu; the second call might return NULL. if indevgetrcudev && indevgetrcudev-ifalist The second issue involves...

EUVD-2026-28623

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UaF in addrconfpermanentaddr The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 after its possible deletion. Reorder the...

CVE-2026-43339

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UaF in addrconfpermanentaddr The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 after its possible deletion. Reorder the...

CVE-2026-43339

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UaF in addrconfpermanentaddr The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 after its possible deletion. Reorder the...

CVE-2026-43339 ipv6: prevent possible UaF in addrconf_permanent_addr()

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent possible UaF in addrconfpermanentaddr The mentioned helper try to warn the user about an exceptional condition, but the message is delivered too late, accessing the ipv6 after its possible deletion. Reorder the...

Unity Linux 20.1050e / 20.1070e Security Update: kernel (UTSA-2026-011354)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011354 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fix a potential refcount underflow for idev Now in addrconfmodrstimer, reference...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-005785)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005785 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fix a potential refcount underflow for idev Now in addrconfmodrstimer, reference...

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...