Linux Distros Unpatched Vulnerability : CVE-2026-53269

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first...

CVE-2026-53269

A flaw was found in the Linux kernel's netfilter synproxy component. This vulnerability is caused by a race condition during the on-demand registration of netfilter hooks. A local user with privileges to modify netfilter rules could exploit this flaw by concurrently adding iptables targets or...

SUSE CVE-2026-53269

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first iptables target or nftables expression, if done concurrently they can ra...

CVE-2026-53269

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first iptables target or nftables expression, if done concurrently they can ra...

UBUNTU-CVE-2026-53269

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first iptables target or nftables expression, if done concurrently they can ra...

CVE-2026-53269 netfilter: synproxy: add mutex to guard hook reference counting

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first iptables target or nftables expression, if done concurrently they can ra...

CVE-2026-53269

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first iptables target or nftables expression, if done concurrently they can ra...

EUVD-2026-39220

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first iptables target or nftables expression, if done concurrently they can ra...

CVE-2026-53269

The CVE-2026-53269 issue exists in the Linux kernel’s netfilter synproxy path, where concurrent registration of hooks could race, affecting refcount blocks. A mutex was added to serialize access to refcount control blocks in frontends, mitigating the race. Connected OSV entries report patches for...

CVE-2026-53269

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first iptables target or nftables expression, if done concurrently they can ra...

PT-2026-52364

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the netfilter synproxy infrastructure. This occurs because netfilter hooks are registered on-demand when a user adds the first iptables target or nftables...

Astra Linux – Vulnerability in Linux, Linux 5.10

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 6.12

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 the kernel to crash due to infinite recursive calls: BUG: The TASK stack guard page was accessed ...

SUSE CVE-2025-40206

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftobjref: validate objref and objrefmap expressions Referencing a synproxy stateful object from OUTPUT hook causes kernel crash due to infinite recursive calls: BUG: TASK stack guard page was hit at 000000008bda5b8c...

EUVD-2025-150368

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftobjref: validate objref and objrefmap expressions Referencing a synproxy stateful object from OUTPUT hook causes kernel crash due to infinite recursive calls: BUG: TASK stack guard page was hit at 000000008bda5b8c...

Linux Distros Unpatched Vulnerability : CVE-2025-40206

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfilter: nftobjref: validate objref and objrefmap expressions Referencing a synproxy stateful object from OUTPUT hook causes kernel crash due to infinite...

AZL-70100 CVE-2025-40206 affecting package kernel for versions less than 6.6.117.1-1

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftobjref: validate objref and objrefmap expressions Referencing a synproxy stateful object from OUTPUT hook causes kernel crash due to infinite recursive calls: BUG: TASK stack guard page was hit at 000000008bda5b8c...

CVE-2025-40206

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftobjref: validate objref and objrefmap expressions Referencing a synproxy stateful object from OUTPUT hook causes kernel crash due to infinite recursive calls: BUG: TASK stack guard page was hit at 000000008bda5b8c...

DEBIAN-CVE-2025-40206

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftobjref: validate objref and objrefmap expressions Referencing a synproxy stateful object from OUTPUT hook causes kernel crash due to infinite recursive calls: BUG: TASK stack guard page was hit at 000000008bda5b8c...

UBUNTU-CVE-2025-40206

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftobjref: validate objref and objrefmap expressions Referencing a synproxy stateful object from OUTPUT hook causes kernel crash due to infinite recursive calls: BUG: TASK stack guard page was hit at 000000008bda5b8c...