CVE-2026-64554

The CVE-2026-64554 entry concerns a Linux kernel netfilter bridge issue: br_ip6_fragment() stores prevhdr, a pointer into skb head, from ip6_find_1stfragopt(), and after skb_checksum_help() reallocates the head via pskb_expand_head(), prevhdr becomes a dangling pointer. ip6_frag_next() dereferenc...

The vulnerability in the `net/ipv6/ip6_output.c` component of the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the net/ipv6/ip6output.c component in the Linux operating system is related to errors in processing parameter lengths. Exploiting this vulnerability can allow an attacker to cause a service failure...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevented NULL dereference in ip6output According to syzbot, there is a possibility that ip6dstidev returns NULL in ip6output. Most parts of the IPv6 stack handle a NULL idev fine, but not this case. syzbot reported: Genera...

RockyLinux 8 : kernel (RLSA-2026:2264)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:2264 advisory. kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it CVE-2025-38403 kernel: net: use dstdevrcu in sksetupcaps CVE-2025-40170...

MiracleLinux 8 : kernel-4.18.0-553.104.1.el8_10 (AXSA:2026-172:10)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-172:10 advisory. kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it CVE-2025-38403 kernel: net: use dstdevrcu in sksetupcaps...

AlmaLinux 8 : kernel-rt (ALSA-2026:2378)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:2378 advisory. kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it CVE-2025-38403 kernel: net: use dstdevrcu in sksetupcaps CVE-2025-40170...

ALSA-2026:2264 Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it CVE-2025-38403 kernel: net: use dstdevrcu in sksetupcaps CVE-2025-40170 kernel: ipv6: use RCU in ip6xmit...

kernel: ipv6: use RCU in ip6_output()

A use-after-free flaw was found in ip6finishoutput2 in net/ipv6/ip6output.c in ipv6 access. This flaw could allow an attacker to crash the system at device disconnect. This vulnerability could even lead to a kernel information leak problem...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005065)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005065 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent NULL dereference in ip6output According to syzbot, there is a chance that ip6dstide...

CVE-2025-40158

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU in ip6output Use RCU in ip6output in order to use dstdevrcu to prevent possible UAF. We can remove rcureadlock/rcureadunlock pairs from ip6finishoutput2. Mitigation Mitigation for this issue is either not available ...

kernel: ipv6: prevent NULL dereference in ip6_output()

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent NULL dereference in ip6output According to syzbot, there is a chance that ip6dstidev returns NULL in ip6output. Most places in IPv6 stack deal with a NULL idev just fine, but not here. syzbot reported: general...