CVE-2023-20540

CVE-2023-20540 describes a timing discrepancy in the AMD Secure Processor (ASP) that could enable a privileged attacker to brute-force the hash-based MAC, potentially compromising data integrity. Affected component: AMD Secure Processor / ASP in AMD client/server platforms using ASP. Root cause: ...

PT-2026-52838

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing the input of an arbitrary message, potentially leading to a loss of data integrity...

CVE-2023-20540: Observable Timing Discrepancy

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity...

CVE-2023-20572: Observable Timing Discrepancy

An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing the input of an arbitrary message, potentially leading to a loss of data integrity...

CVE-2026-6329 PKCS#12 MAC verification uses attacker-controlled comparison length

PKCS12 MAC verification uses an attacker-controlled comparison length, weakening the integrity check on the MAC and allowing a mismatched MAC to be accepted. The PKCS12 verify path compared the locally computed HMAC against the MAC parsed from the PKCS12 structure using a length taken directly fr...

CVE-2026-6331

HMAC zero-length tag forgery in EVPDigestVerifyFinal, where a zero-length tag could be accepted as valid during HMAC verification. In the OpenSSL-compatibility HMAC verify path the supplied signature length was only checked as not exceeding the MAC length, so a zero-length or otherwise truncated...

PT-2026-52602

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description PKCS12 MAC verification uses a comparison length controlled by an attacker, which weakens the integrity check on the Message Authentication Code MAC and allows a...

SUSE CVE-2026-46291

In the Linux kernel, the following vulnerability has been resolved: crypto: caam - guard HMAC key hex dumps in hashdigestkey Use printhexdumpdevel for dumping sensitive HMAC key bytes in hashdigestkey to avoid leaking secrets at runtime when CONFIGDYNAMICDEBUG is enabled...

CVE-2026-5477

An integer overflow existed in the wolfCrypt CMAC implementation, that could be exploited to forge CMAC tags. The function wcCmacUpdate used the guard if cmac-totalSz != 0 to skip XOR-chaining on the first block where digest is all-zeros and the XOR is a no-op. However, totalSz is word32 and wrap...

EUVD-2026-32959

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.9.5, deterministic AES-192-CBC with a fixed zero IV, constant KDF salt, and no MAC leads to confidentiality and integrity failures for synced bookmark/profile data. Attackers can crack common...

Security update for postgresql14

This update for postgresql14 fixes the following issues Security issues: CVE-2026-6472: ensure the user has CREATE privilege on the schema specified bsc1265172. CVE-2026-6473: integer overflows in memory-allocation calculations bsc1265173. CVE-2026-6474: Guard against malicious time zone names...

aiosend: Deserialization of request body before signature verification (Pre-auth DoS) in webhook handler

Summary WebhookHandler.feedupdate deserializes the entire request body before verifying the HMAC signature. This allows an unauthenticated attacker to force expensive parsing of arbitrary JSON payloads that will ultimately be rejected, leading to unnecessary CPU and memory consumption. Severity...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: The comparison of MACs has been fixed to be at constant time. To prevent timing attacks, MACs need to be compared at constant time. Use the appropriate helper functions for this purpose...

CVE-2026-43384

A flaw was found in the Linux kernel's TCP Authentication Option TCP-AO implementation. This vulnerability arises from a non-constant-time comparison of Message Authentication Codes MACs. A remote attacker could potentially exploit this timing discrepancy to perform a timing attack, which may lea...

CVE-2026-43383

A flaw was found in the Linux kernel's TCP MD5 signature option. This vulnerability allows a remote attacker to perform timing attacks due to a non-constant-time comparison of Message Authentication Codes MACs. By observing the time taken for MAC comparisons, an attacker could potentially infer...

EUVD-2026-28689

In the Linux kernel, the following vulnerability has been resolved: net/tcp-md5: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this...

CVE-2026-43384

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this...

CVE-2026-43383

In the Linux kernel, the following vulnerability has been resolved: net/tcp-md5: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this...

UBUNTU-CVE-2026-43384

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this...

CVE-2026-43384 net/tcp-ao: Fix MAC comparison to be constant-time

In the Linux kernel, the following vulnerability has been resolved: net/tcp-ao: Fix MAC comparison to be constant-time To prevent timing attacks, MACs need to be compared in constant time. Use the appropriate helper function for this...