Linux Distros Unpatched Vulnerability : CVE-2025-40135

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ipv6: use RCU in ip6xmit Use RCU in ip6xmit in order to use dstdevrcu to prevent possible UAF. CVE-2025-40135 Note that Nessus relies on the presence of the...

kernel: vrf: use RCU protection in l3mdev_l3_out()

A use-after-free vulnerability was found in the Linux kernel. l3mdevl3out can be called without RCU being held, causing damage to the availability of the system...

kernel: xfrm: state: fix out-of-bounds read during lookup

In the Linux kernel, the following vulnerability has been resolved: xfrm: state: fix out-of-bounds read during lookup lookup and resize can run in parallel. The xfrmstatehashgeneration seqlock ensures a retry, but the hash functions can observe a hmask value that is too large for the new hlist...

kernel: ipv6: use RCU protection in ip6_default_advmss()

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU protection in ip6defaultadvmss ip6defaultadvmss needs rcu protection to make sure the net structure it reads does not disappear...

kernel: openvswitch: use RCU protection in ovs_vport_cmd_fill_info()

In the Linux kernel, the following vulnerability has been resolved: openvswitch: use RCU protection in ovsvportcmdfillinfo ovsvportcmdfillinfo can be called without RTNL or RCU. Use RCU protection and devnetrcu to avoid potential UAF...

kernel: xfrm: state: fix out-of-bounds read during lookup

In the Linux kernel, the following vulnerability has been resolved: xfrm: state: fix out-of-bounds read during lookup lookup and resize can run in parallel. The xfrmstatehashgeneration seqlock ensures a retry, but the hash functions can observe a hmask value that is too large for the new hlist...

kernel: vrf: use RCU protection in l3mdev_l3_out()

A use-after-free vulnerability was found in the Linux kernel. l3mdevl3out can be called without RCU being held, causing damage to the availability of the system...

kernel: ipv6: use RCU protection in ip6_default_advmss()

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU protection in ip6defaultadvmss ip6defaultadvmss needs rcu protection to make sure the net structure it reads does not disappear...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989506)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989506 advisory. In the Linux kernel, the following vulnerability has been resolved: SUNRPC: make sure cache entry active before cacheshow The function cshow was called with protecti...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988727)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988727 advisory. In the Linux kernel, the following vulnerability has been resolved: net: sched: flower: protect flwalk with rcu Patch that refactored flwalk to use...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: hrtimers: Timers queued after CPUHPAPHRTIMERSDYING are forced to be migrated away from the dying CPU to any online target. This is done to avoid delaying bandwidth timer handling tasks related to CPU hotplug progress. However,...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: ppp: Fixed race conditions in pppfillforwardpath. pppfillforwardpath has two race conditions: 1. The ppp-channels list can change between listempty and listfirstentry, as ppplock is not held. If the only channel is deleted in...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ipv6: A possible infinite loop has been fixed in fib6infousesdev. fib6infousesdev appears to rely on RCU without proper protection. Similar to the previous fix in rt6nlmsgsize, we need to ensure that fib6delroute or fib6addrt2nod...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: In hcicore, a use-after-free occurred in vhciFlush. syzbot reported a use-after-free in vhciFlush, without providing reproduction steps. 0 In the slab structure, a thread called close closed a vhci file descriptor...

tcp_metrics: use dst_dev_net_rcu()

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ipv4: start using dst_dev_rcu()

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CVE-2025-40075

In the Linux kernel, the following vulnerability has been resolved: tcpmetrics: use dstdevnetrcu Replace three dstdev with a lockdep enabled helper...

CVE-2025-40074

In the Linux kernel, the following vulnerability has been resolved: ipv4: start using dstdevrcu Change icmpv4xrlimallow, ipdefrag to prevent possible UAF. Change ipmrpreparexmit, ipmrqueuefwdxmit, ipmroutput, ipv4neighlookup to use lockdep enabled dstdevrcu...

CVE-2025-40074

In the Linux kernel, the following vulnerability has been resolved: ipv4: start using dstdevrcu Change icmpv4xrlimallow, ipdefrag to prevent possible UAF. Change ipmrpreparexmit, ipmrqueuefwdxmit, ipmroutput, ipv4neighlookup to use lockdep enabled dstdevrcu...

Siemens SIMATIC Devices Use After Free (CVE-2025-21764)

ndisc: use RCU protection in ndiscallocskb This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if description scriptid503652; scriptversion"1.3";...