CVE-2026-63836

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tpmeter: avoid divide-by-zero for deccwnd The cwnd is always MSS = cwnd = 0x20000000. But the calculation in batadvtpupdatecwnd assumes unsigned 32 bit arithmetics. mss 8 2 / cwnd 8 In case cwnd is actually 0x20000000...

USN-8548-1 linux-aws, linux-fips, linux-lts-xenial vulnerabilities

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-43503 Several security issues...

USN-8530-1 linux-aws, linux-aws-fips vulnerabilities

It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processing paged fragments. A local attacker...

USN-8529-1 linux, linux-azure-4.15, linux-azure-fips, linux-fips, linux-gcp-4.15, linux-gcp-fips, linux-kvm, linux-oracle vulnerabilities

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-43503 Several security issues...

USN-8529-1: Linux kernel vulnerabilities

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-43503 Several security issues...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: TCP: added accessors to read/set tp-sndcwnd. Over the years, we’ve had various bugs in the code that broke the assumption that tp-sndcwnd is greater than zero. Recently, syzbot reported that the condition WARNONONCE!tp-priorcwnd...

kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit The following setup can trigger a WARNING in htbactivate due to the condition: !cl-leaf.q-q.qlen tc qdisc del dev lo root tc qdisc add dev lo root handle 1: htb...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: TCP: cdg: allows tcpcdgrelease to be called multiple times. It seems that MPTCP can call tcpdisconnect on a flow that is already disconnected. This is generally fine, unless the current congestion control mechanism is CDG, as ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: TCP: Fixed the issue where “tcpmtupprobesuccess” was displayed instead of “wrong sndcwnd”. The syzbot received a new report 1, which finally pointed to a very old bug. This bug was addressed in the initial support for MTU probing...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix tcpinittransfer so that icskcainitialized is not reset. This commit addresses a bug discovered by syzkaller, which could lead to spurious double-initizations for congestion control modules. This could result in memory...

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

In the Linux kernel, the following vulnerabilities have been resolved: dccp: Fixed a race condition involving the dp-dccpsmsscache variable. The dccpsendmsg function reads the dp-dccpsmsscache before locking the socket. The same issue occurs in dodccpgetsockopt. Added annotations for...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: In the net subsystem, it is now allowed only for the init netns to set the default tcpcongestioncontrol to a restricted algorithm. The tcpsetdefaultcongestioncontrol function is netns-safe because it writes to...

CentOS 9 : kernel-5.14.0-706.el9

"The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the kernel-5.14.0-706.el9 build changelog. - In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit...

PT-2026-39113

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw in the netfilter x tables component allows for 1-byte tail reads. This occurs when the last byte of options is a non-single-byte option kind, causing walkers that advance using i ...

Juniper Junos OS Vulnerability (JSA73154)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA73154 advisory. - An Origin Validation vulnerability in MAC address validation of Juniper Networks Junos OS Evolved on PTX10001, PTX10004, PTX10008, and PTX10016 devices allows a...