Astra Linux – Vulnerability in gnutls28

A flaw was discovered in gnutls. A use-after-free issue in the client’s sending of the keyshare extension may lead to memory corruption and other related issues...

JLSEC-2026-757 Use-after-free in PQC hybrid key-share handling

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

JLSEC-2026-704 Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in...

Missing required cryptographic step in the TLS 1.3 client HelloRetryRequest handshake logic in wolfSSL could lead to a compromise in the confidentiality of TLS-protected communications via a crafted HelloRetryRequest followed by a ServerHello message that omits the required keyshare extension,...

JLSEC-2026-676 If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension)...

If a TLS 1.3 client gets neither a PSK pre shared key extension nor a KSE key share extension when connecting to a malicious server, a default predictable buffer gets used for the IKM Input Keying Material value when generating the session master secret. Using a potentially known IKM value when...

Linux Distros Unpatched Vulnerability : CVE-2026-7531

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a...

CVE-2026-7531

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

UBUNTU-CVE-2026-7531

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

CVE-2026-7531

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

CVE-2026-7531 Use-after-free in PQC hybrid key-share handling

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

CVE-2026-7531 Use-after-free in PQC hybrid key-share handling

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

CVE-2026-7531 Use-after-free in PQC hybrid key-share handling

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

CVE-2026-7531

CVE-2026-7531 describes a use-after-free in the handling of PQC hybrid key-shares for TLS 1.3. The issue occurs when a malicious server sends a truncated PQC hybrid KeyShare, which can trigger the error cleanup path to operate on freed memory. Documents consistently label this as an incomplete fi...

EUVD-2026-39554

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

CVE-2026-7531

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

CVE-2026-7531: Use After Free

Use-after-free in PQC hybrid key-share handling. This is an incomplete-fix follow-up to CVE-2026-5460 released in 5.9.1: a malicious TLS 1.3 server sending a truncated PQC hybrid KeyShare can still trigger the error cleanup path to operate on freed memory...

PT-2026-52577

Name of the Vulnerable Software and Affected Versions OpenSSL versions prior to 5.9.1 Description A use-after-free issue exists in the handling of PQC hybrid key-shares. A malicious TLS 1.3 server can send a truncated PQC hybrid KeyShare, which triggers an error cleanup path that operates on memo...

JLSEC-2026-520

A flaw was found in gnutls. A use after free issue in client sending keyshare extension may lead to memory corruption and other consequences...

PT-2026-47002

A flaw was found in gnutls. A use after free issue in client sending key share extension may lead to memory corruption and other consequences...

Unity Linux 20.1060e / 20.1070e Security Update: gnutls (UTSA-2026-017626)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017626 advisory. A flaw was found in gnutls. A use after free issue in client sending keyshare extension may lead to memory corruption and other consequences. Tenable has extracted t...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the error handling path of the TLSXKeyShareProcessPqcHybridClient process. An attacker can cause memory corruption or potentially execute arbitrary code by triggering an error during post-quantum cryptography hybrid...