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

In the Linux kernel, the following vulnerability has been resolved: xfrm: ESP: restoring the combined single-frag-length gate. The ESP fast path appends the trailer in espoutputhead before espoutputtail allocates the destination page frag. Currently, the head-side gate checks skb-datalen and tail...

CVE-2026-98255

A flaw was found in the Linux kernel. Its TCP Transmission Control Protocol fast-path processing logic fails to properly filter out-of-bounds acknowledgment ACK packets before validating them. A remote attacker could exploit this vulnerability by sending network packets with outdated ACK numbers,...

SUSE CVE-2026-98255

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

AZL-106353 CVE-2026-98255 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

DEBIAN-CVE-2026-98255

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

CVE-2026-98255

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

CVE-2026-98255

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

UBUNTU-CVE-2026-98255

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

CVE-2026-98255 tcp: exclude old ACKs from tcp fast path

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

CVE-2026-98255 tcp: exclude old ACKs from tcp fast path

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

CVE-2026-98255

The Linux kernel contains a vulnerability where old Acknowledgements (ACKs) could bypass the fast path of the TCP stack. Specifically, ACKs before SND.UNA and after SND.NXT were not being properly validated, potentially allowing them to modify connection state or advance RCV.NXT prematurely. The ...

EUVD-2026-93183

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

CVE-2026-98255

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

CVE-2026-98255: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to the slow path, where tcpack performs the appropriate validation and...

PT-2026-106584

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.2.10-1.1 Description An issue exists in the TCP implementation where old ACKs Acknowledgment numbers before SND.UNA and ACKs after SND.NXT are not properly excluded from the TCP fast path. This allows such ACKs...

Linux Distros Unpatched Vulnerability : CVE-2026-98255

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tcp: exclude old ACKs from tcp fast path Exclude old ACKs before SND.UNA from the tcp fast path as well as ACKs after SND.NXT. Such ACKs will fall through to th...

SUSE CVE-2026-89849

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path qla2x00statusentry filters out non-TYPESRB entries and the SRBNVMECMD, SRBBIDICMD and SRBTMCMD types, then falls through to a SCSI fast path that assumes the command is ...

Linux Distros Unpatched Vulnerability : CVE-2026-80895

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mshv: Order ptvparray publish against irqfd assertion path mshvpartitionioctlcreatevp initialises a VP struct allocations, mutexinit, initwaitqueuehead, page...

SUSE CVE-2026-80895

In the Linux kernel, the following vulnerability has been resolved: mshv: Order ptvparray publish against irqfd assertion path mshvpartitionioctlcreatevp initialises a VP struct allocations, mutexinit, initwaitqueuehead, page mappings and then publishes the pointer into partition-ptvparray. Sever...

CVE-2026-80895

In the Linux kernel, the following vulnerability has been resolved: mshv: Order ptvparray publish against irqfd assertion path mshvpartitionioctlcreatevp initialises a VP struct allocations, mutexinit, initwaitqueuehead, page mappings and then publishes the pointer into partition-ptvparray. Sever...