EUVD-2026-38901

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Take state lock for afunix iter When a BPF iterator program updates a sockmap, there is a race condition in unixstreambpfupdateproto where the peer pointer can become stale1 during a state transition TCPESTABLISHED ...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: tcpbpf: The function tcpbpfsendverdict fails to allocate psock-cork when called, and skmsgfree must be called instead. The issue was reported by syzbot as follows: 0 The reproduction of the issue involves the following steps: 1...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: BPF: Allow deletion from sockmap/sockhash only if updating is allowed. We have received a surge in reports from syzkaller instances where a BPF program attached to a tracepoint triggered a locking rule violation by performing a...

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: net: The TOCTOU issue in skisreadable has been fixed. sk-skprot-sockisreadable is a valid function pointer when sk resides in a sockmap. After the last skpsockput call which usually occurs when a socket is removed from the sockma...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed an infinite loop issue when len is 0 in the tcpbpfrecvmsg parser. When the buffer length of the recvmsg system call is 0, a soft lockup problem occurred. watchdog: BUG: Soft lockup – CPU3 stuck for 27...

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: bpf, sockmap: Avoid using sksocket after free when sending The sk-sksocket is not locked or referenced in backlog thread, and during the call to skbsendsock, there is a race condition with the release of sksocket. All types of...

Siemens RUGGEDCOM RST2428P Improper Input Validation (CVE-2025-40248)

In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect if already established During connect, acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connect invoking vsocktransportcancelpkt -...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: bpf, sockmap: Fixed a race condition in sockmapfree. sockmapfree calls releasesocksk without owning a reference to the socket. This could lead to a use-after-free, as syzbot identified this issue 1. Jakub Sitnicki already...

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: bpf, sockmap: Fixed the race condition involving skb after locking changes. There is a race condition where the skb from the skpsockbacklog can be referenced after the user-space side has already consumed the skbuff using...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: BPF, sockmap: Fixed a potential memory leak in an unlikely error case. If the skblinearize function is needed and fails, we might leak a message during error handling. To fix this issue, we must free the message buffer before...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013859)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013859 advisory. In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix memleak in skpsockqueuemsg If tcpbpfsendmsg is running during a tear down...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-011374)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-011374 advisory. In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix an infinite loop error when len is 0 in tcpbpfrecvmsgparser When the buffer...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013041)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013041 advisory. In the Linux kernel, the following vulnerability has been resolved: mptcp: Fix proto fallback detection with BPF The sockmap feature allows bpf syscall from userspac...

CVE-2025-68227

In the Linux kernel, the following vulnerability has been resolved: mptcp: Fix proto fallback detection with BPF The sockmap feature allows bpf syscall from userspace, or based on bpf sockops, replacing the skprot of sockets during protocol stack processing with sockmap's custom read/write...

CVE-2025-68227 mptcp: Fix proto fallback detection with BPF

In the Linux kernel, the following vulnerability has been resolved: mptcp: Fix proto fallback detection with BPF The sockmap feature allows bpf syscall from userspace, or based on bpf sockops, replacing the skprot of sockets during protocol stack processing with sockmap's custom read/write...

PT-2025-51640

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel’s MPTCP implementation related to protocol fallback detection with BPF. The issue arises when a server has MPTCP enabled, but a client sends a TCP SYN...

Linux Distros Unpatched Vulnerability : CVE-2025-68227

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mptcp: Fix proto fallback detection with BPF The sockmap feature allows bpf syscall from userspace, or based on bpf sockops, replacing the skprot of sockets...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989734)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989734 advisory. In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix more uncharged while msg has moredata In tcpbpfsendverdict, if msg has more dat...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989957)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989957 advisory. In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix more uncharged while msg has moredata In tcpbpfsendverdict, if msg has more dat...

EUVD-2023-60023

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix out-of-bounds access in ipv6findtlv optlen is fetched without checking whether there is more than one byte to parse. It can lead to out-of-bounds access. Found by InfoTeCS on behalf of Linux Verification Center...