CVE-2026-68320

In the Linux kernel, the following vulnerability has been resolved: sctp: fix authchunklist capacity check in sctpauthepaddchunkid sctpauthepaddchunkid uses SCTPNUMCHUNKTYPES 20 as the capacity limit for ep-authchunklist, allowing it to hold up to 20 chunk entries paramhdr.length up to 24. Howeve...

EUVD-2026-55562

In the Linux kernel, the following vulnerability has been resolved: sctp: fix authhmacs array size in struct sctpcookie The authhmacs array in struct sctpcookie is supposed to store a complete SCTPAUTHHMACALGO parameter, which consists of a struct sctpparamhdr followed by N HMAC identifiers...

EUVD-2026-55421

In the Linux kernel, the following vulnerability has been resolved: sctp: fix authchunklist capacity check in sctpauthepaddchunkid sctpauthepaddchunkid uses SCTPNUMCHUNKTYPES 20 as the capacity limit for ep-authchunklist, allowing it to hold up to 20 chunk entries paramhdr.length up to 24. Howeve...

CVE-2026-68320 sctp: fix auth_chunk_list capacity check in sctp_auth_ep_add_chunkid

In the Linux kernel, the following vulnerability has been resolved: sctp: fix authchunklist capacity check in sctpauthepaddchunkid sctpauthepaddchunkid uses SCTPNUMCHUNKTYPES 20 as the capacity limit for ep-authchunklist, allowing it to hold up to 20 chunk entries paramhdr.length up to 24. Howeve...

CVE-2026-68300 sctp: auth: verify auth requirement when auth_chunk is NULL

In the Linux kernel, the following vulnerability has been resolved: sctp: auth: verify auth requirement when authchunk is NULL sctpauthchunkverify returns true unconditionally when chunk-authchunk is NULL, silently skipping authentication. This is incorrect when: 1. skbclone failed in the BH...

CVE-2026-68300

Summary: CVE-2026-68300 in the Linux kernel concerns SCTP authentication. The function sctp_auth_chunk_verify() incorrectly returns true when auth_chunk is NULL, allowing authentication to be bypassed under certain conditions (e.g., skb_clone() failure in BH path or absence of an AUTH before COOK...

EUVD-2026-55547

In the Linux kernel, the following vulnerability has been resolved: sctp: close UDP tunnel sockets during netns teardown procsctpdoudpport starts per-net SCTP UDP tunneling sockets when net.sctp.udpport is set, and stops/restarts them when the sysctl value changes. The netns exit path does not st...

CVE-2026-68161

Summary of CVE-2026-68161 : In the Linux kernel, SCTP UDP tunnel sockets created per-net SCTP UDP port (net.sctp.udp_port) are not stopped when a network namespace (netns) is torn down, potentially leaving sockets installed during teardown. The root cause is that the netns exit path does not stop...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: sctp: Linearize cloned GSO packets in sctprcv. The cloned headskb still shares these frag SKBs in the fraglist with the original headskb. Accessing these frag SKBs is not safe. syzbot reported two bugs caused by the use of...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: SCTP: The instruction “move SCTPCMDASSOCSHKEY right after SCTPCMDPEERINIT” has been fixed. A null-ptr-deref issue was reported in the SCTP transmission path when the SCTP-AUTH key initialization fails:...

CVE-2026-64564

In the Linux kernel, the following vulnerability has been resolved: sctp: don't free the ASCONF's own transport in DEL-IP processing sctpprocessasconf caches the transport the ASCONF chunk is processed against in asconf-transport == chunk-transport, set once in sctprcv. For an ASCONF located...

CVE-2026-64564

CVE-2026-64564 concerns a Linux kernel SCTP DEL-IP processing bug. The vulnerability arises because sctp_process_asconf() caches the ASCONF transport in asconf->transport (tied to chunk->transport) and that transport can be different from the packet source address when looked up via __sctp_...

CVE-2026-64564 sctp: don't free the ASCONF's own transport in DEL-IP processing

In the Linux kernel, the following vulnerability has been resolved: sctp: don't free the ASCONF's own transport in DEL-IP processing sctpprocessasconf caches the transport the ASCONF chunk is processed against in asconf-transport == chunk-transport, set once in sctprcv. For an ASCONF located...

CVE-2026-64551

A flaw was found in the Linux kernel's Stream Control Transmission Protocol SCTP. This vulnerability allows a remote attacker or a local unprivileged user to potentially access and disclose sensitive information. By sending a malformed error message, the system can be tricked into reading and the...

SUSE CVE-2026-64551

In the Linux kernel, the following vulnerability has been resolved: sctp: validate STALECOOKIE cause length before reading staleness When an ERROR chunk with a STALECOOKIE cause is received in the COOKIEECHOED state, sctpsfdo526stale reads the 4-byte Measure of Staleness that follows the cause...

UBUNTU-CVE-2026-64551

In the Linux kernel, the following vulnerability has been resolved: sctp: validate STALECOOKIE cause length before reading staleness When an ERROR chunk with a STALECOOKIE cause is received in the COOKIEECHOED state, sctpsfdo526stale reads the 4-byte Measure of Staleness that follows the cause...

CVE-2026-64551 sctp: validate STALE_COOKIE cause length before reading staleness

In the Linux kernel, the following vulnerability has been resolved: sctp: validate STALECOOKIE cause length before reading staleness When an ERROR chunk with a STALECOOKIE cause is received in the COOKIEECHOED state, sctpsfdo526stale reads the 4-byte Measure of Staleness that follows the cause...

CVE-2026-64551

CVE-2026-64551 concerns the Linux kernel SCTP stack. A vulnerability in the handling of an ERROR chunk with a STALE_COOKIE cause in the COOKIE_ECHOED state can cause an out-of-bounds read: the code reads the 4-byte Measure of Staleness from after the cause header, but the staleness field may not ...

CVE-2026-64551 sctp: validate STALE_COOKIE cause length before reading staleness

In the Linux kernel, the following vulnerability has been resolved: sctp: validate STALECOOKIE cause length before reading staleness When an ERROR chunk with a STALECOOKIE cause is received in the COOKIEECHOED state, sctpsfdo526stale reads the 4-byte Measure of Staleness that follows the cause...

PT-2026-65226

In the Linux kernel, the following vulnerability has been resolved: sctp: validate STALE COOKIE cause length before reading staleness When an ERROR chunk with a STALE COOKIE cause is received in the COOKIE ECHOED state, sctp sf do 5 2 6 stale reads the 4-byte Measure of Staleness that follows the...