CVE-2026-52924

. CVE-2026-52924: SCTP Use-After-Free in Stale Cookie Handling Vulnerability Summary CVE ID: CVE-2026-52924 Severity: CRITICAL CVSS 9.8 Component: Linux Kernel - SCTP Stream Control Transmission Protocol Type: Use-After-Free CWE-416, CWE-825 Published: 2026-06-24 Status: Fixed Affected Versions...

UBUNTU-CVE-2026-98548

In the Linux kernel, the following vulnerability has been resolved: sctp: discard the rest of the packet on a stale-cookie error When an association is in COOKIE-ECHOED state and the peer sends a bundled ERRORStale CookieDATA packet from one of its non-primary addresses, processing the ERROR chun...

CVE-2026-98548

In the Linux kernel, the following vulnerability has been resolved: sctp: discard the rest of the packet on a stale-cookie error When an association is in COOKIE-ECHOED state and the peer sends a bundled ERRORStale CookieDATA packet from one of its non-primary addresses, processing the ERROR chun...

kernel: sctp: purge outqueue on stale COOKIE-ECHO handling

A flaw was found in the Linux kernel's Stream Control Transmission Protocol SCTP implementation. This vulnerability, a use-after-free, occurs when the system processes a Stale Cookie ERROR during the setup or reconfiguration of an SCTP association. A remote attacker could exploit this by sending...

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

In the Linux kernel, the following vulnerabilities have been resolved: sctp: Purge the outqueue when handling stale COOKIE-ECHO The sctpstreamupdate function is only invoked when the association is moved to COOKIEWAIT during association setup/reconfiguration. In this case, the outbound stream...

OESA-2026-4038 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: sctp: purge outqueue on stale COOKIE-ECHO handling sctpstreamupdate is only invoked when the association is moved into COOKIEWAIT during association...

CVE-2026-55617

Hydro is a next-generation high-performance online judge platform. From 4.10.4 until 5.0.2, the session recreation logic in packages/hydrooj/src/service/layers/base.ts creates a replacement session token without deleting the previous token from the server-side session token store, so an old sid...

CVE-2026-55617 Hydro: Insufficient session expiration when recreating sessions

Hydro is a next-generation high-performance online judge platform. From 4.10.4 until 5.0.2, the session recreation logic in packages/hydrooj/src/service/layers/base.ts creates a replacement session token without deleting the previous token from the server-side session token store, so an old sid...

kernel: sctp: purge outqueue on stale COOKIE-ECHO handling

A flaw was found in the Linux kernel's Stream Control Transmission Protocol SCTP implementation. This vulnerability, a use-after-free, occurs when the system processes a Stale Cookie ERROR during the setup or reconfiguration of an SCTP association. A remote attacker could exploit this by sending...

CVE-2026-80890

In the Linux kernel, the following vulnerability has been resolved: sctp: reject stale cookies with mismatched verification tags sctpunpackcookie skips cookie expiration checks whenever an association already exists. This is broader than the exception in RFC 9260 Section 5.2.4. For an existing...

AZL-99642 CVE-2026-80890 affecting package kernel for versions less than 6.6.152.1-1

In the Linux kernel, the following vulnerability has been resolved: sctp: reject stale cookies with mismatched verification tags sctpunpackcookie skips cookie expiration checks whenever an association already exists. This is broader than the exception in RFC 9260 Section 5.2.4. For an existing...

CVE-2026-80890

In the Linux kernel, the following vulnerability has been resolved: sctp: reject stale cookies with mismatched verification tags sctpunpackcookie skips cookie expiration checks whenever an association already exists. This is broader than the exception in RFC 9260 Section 5.2.4. For an existing...

CVE-2026-80890 sctp: reject stale cookies with mismatched verification tags

In the Linux kernel, the following vulnerability has been resolved: sctp: reject stale cookies with mismatched verification tags sctpunpackcookie skips cookie expiration checks whenever an association already exists. This is broader than the exception in RFC 9260 Section 5.2.4. For an existing...

EUVD-2026-71640

In the Linux kernel, the following vulnerability has been resolved: sctp: reject stale cookies with mismatched verification tags sctpunpackcookie skips cookie expiration checks whenever an association already exists. This is broader than the exception in RFC 9260 Section 5.2.4. For an existing...

CVE-2026-80890 sctp: reject stale cookies with mismatched verification tags

In the Linux kernel, the following vulnerability has been resolved: sctp: reject stale cookies with mismatched verification tags sctpunpackcookie skips cookie expiration checks whenever an association already exists. This is broader than the exception in RFC 9260 Section 5.2.4. For an existing...

CVE-2026-80890

This Linux kernel SCTP vulnerability affects sctp_unpack_cookie(), which incorrectly skips cookie expiration checks whenever an association already exists—a broader exception than permitted by RFC 9260 Section 5.2.4 . The bug allows an expired Action A restart cookie to reach sctp_sf_do_dupcook_a...

PT-2026-91798

In the Linux kernel, the following vulnerability has been resolved: sctp: reject stale cookies with mismatched verification tags sctp unpack cookie skips cookie expiration checks whenever an association already exists. This is broader than the exception in RFC 9260 Section 5.2.4. For an existing...

PT-2026-86181

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Stream Control Transmission Protocol SCTP implementation where the sctp unpack cookie function fails to perform cookie expiration checks if an association already...

Linux Distros Unpatched Vulnerability : CVE-2026-80890

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - sctp: reject stale cookies with mismatched verification tags sctpunpackcookie skips cookie expiration checks whenever an association already exists. This is...

RockyLinux 8 : kernel (RLSA-2026:59821)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:59821 advisory. kernel: sctp: purge outqueue on stale COOKIE-ECHO handling CVE-2026-52924 kernel: scsi: target: iscsi: Validate CHAPR length before base64 decode...