Unity Linux 20.1020e / 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-142747)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-142747 advisory. In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: fix unaligned memory access in timestamp adjustment Use getunalignedbe32 and...

RHEL 7 : kernel (RHSA-2026:81349)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:81349 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: netfilter: conntrack: remove...

RHEL 7 : kernel-rt (RHSA-2026:81371)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:81371 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: Fixed an out-of-bounds condition during the parsing of TCP options. The TCP option parser in synproxy（synproxyparseoptions）could read one byte out of bounds. When the length is 1, the execution flow enters a...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftobjref: validate objref and objrefmap expressions Referring to a synproxy stateful object from the OUTPUT hook causes a kernel crash due to infinite recursive calls: BUG: The TASK stack guard page was hit at...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

Important: Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

An update for kernel-rt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: refresh tcphdr after skbensurewritable The synproxytstampadjust function re-writes the TCP timestamp option in place, and then patches the TCP checksum via inetprotocsumReplace4 on the tcphdr pointer provided...

Rocky Linux 8 [CIQ] Security Update: kernel-rt / kernel-rt-core / kernel-rt-debug / kernel-rt-debug-core / etc Multiple Vulnerabilities (crlsa-2026_64770)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202664770 advisory. kernel: crypto: pcrypt - Fix handling of MAYBACKLOG requests CVE-2026-43493 kernel: netfilter: conntrack: remove sprintf usage CVE-2026-53002 kernel:...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

kernel: netfilter: synproxy: refresh tcphdr after skb_ensure_writable

A flaw was found in the Linux kernel's netfilter synproxy module. When handling TCP timestamp options, a stale pointer can be used after memory reallocation. This can result in memory corruption, where data is written to a freed memory area, or lead to packets being sent with an incorrect checksu...

CVE-2026-80637

A flaw was found in the Linux kernel's netfilter synproxy component. This vulnerability is due to unaligned memory access when adjusting timestamp fields. An attacker could potentially trigger this flaw by sending specially crafted network traffic, leading to performance degradation or a system...

SUSE CVE-2026-80637

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: fix unaligned memory access in timestamp adjustment Use getunalignedbe32 and putunalignedbe32 to safely read and write the timestamp fields. This prevents performance degradation due to unaligned memory acces...

AZL-98132 CVE-2026-80637 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: fix unaligned memory access in timestamp adjustment Use getunalignedbe32 and putunalignedbe32 to safely read and write the timestamp fields. This prevents performance degradation due to unaligned memory acces...

CVE-2026-80637

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: fix unaligned memory access in timestamp adjustment Use getunalignedbe32 and putunalignedbe32 to safely read and write the timestamp fields. This prevents performance degradation due to unaligned memory acces...