EulerOS 2.0 SP11 : libkcapi (EulerOS-SA-2026-4338)

According to the versions of the libkcapi packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter...

libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

libkcapi: IV reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

libkcapi security, bug fix, and enhancement update

1.4.0-3.0.1 - Change distronameext in spec file to oracle 1.4.0-3 - Remove ansicprng test as new kernels don't support it Resolves: RHEL-242707 - Add tag processing in AEAD decryption without ciphertext Resolves: RHEL-242667 - CVE-2026-71226: Fix memory corruption via uncanceled AIO requests on...

OESA-2026-3575 libkcapi security update

The Linux kernel exports a Netlink interface of type AFALG to allow user space to utilize the kernel crypto API. libkcapi uses this Netlink interface and exports easy to use APIs so that a developer does not need to consider the low-level Netlink interface handling. The library does not implement...

AZL-94655 CVE-2026-71225 affecting package libkcapi for versions less than 1.5.1-1

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

ALPINE-CVE-2026-71225

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

CVE-2026-71225

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

CVE-2026-71225

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

CVE-2026-71225 Libkcapi: iv reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

CVE-2026-71225

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

PT-2026-68129

Name of the Vulnerable Software and Affected Versions libkcapi affected versions not specified Description A flaw exists when performing one-shot symmetric cipher operations on inputs exceeding 64 KiB in stateful modes, specifically Counter CTR or Cipher Block Chaining CBC. The library improperly...

CVE-2022-50707

In the Linux kernel, the following vulnerability has been resolved: virtio-crypto: fix memory leak in virtiocryptoalgskcipherclosesession 'vcctrlreq' is alloced in virtiocryptoalgskcipherclosesession, and should be freed in the invalid ctrlstatus-status error handling case. Otherwise there is a...

CVE-2022-50707 virtio-crypto: fix memory leak in virtio_crypto_alg_skcipher_close_session()

In the Linux kernel, the following vulnerability has been resolved: virtio-crypto: fix memory leak in virtiocryptoalgskcipherclosesession 'vcctrlreq' is alloced in virtiocryptoalgskcipherclosesession, and should be freed in the invalid ctrlstatus-status error handling case. Otherwise there is a...

Demo of AES GCM Misuse Problems

This is really neat demo of the security problems arising from reusing nonces with a symmetric cipher in GCM mode...

Miscomputation when performing AES encryption in rust-crypto

The following Rust program demonstrates some strangeness in AES encryption - if you have an immutable key slice and then operate on that slice, you get different encryption output than if you operate on a copy of that key. For these functions, we expect that extending a 16 byte key to a 32 byte k...

Linux/x86 - Rabbit Shellcode Crypter (200 bytes)

Introduction Exploit Title: Rabbit Shellcode Crypter Date: 24.4.2019 Exploit Author: Petr Javorik, www.mmquant.net Tested on: Linux ubuntu 3.13.0-32-generic, x86 Description: Crypter which encrypts, decrypts and executes given shellcode using Rabbit symmetric cipher Keep in mind before use 1. Max...

kernel: Salsa20 encryption algorithm does not correctly handle zero-length inputs allowing local attackers to cause denial-of-service

The Salsa20 encryption algorithm in the Linux kernel, before 4.14.8, does not correctly handle zero-length inputs. This allows a local attacker the ability to use the AFALG-based skcipher interface to cause a denial of service uninitialized-memory free and kernel crash or have an unspecified othe...

LC4: Another Pen-and-Paper Cipher

Interesting symmetric cipher: LC4: Abstract: ElsieFour LC4 is a low-tech cipher that can be computed by hand; but unlike many historical ciphers, LC4 is designed to be hard to break. LC4 is intended for encrypted communication between humans only, and therefore it encrypts and decrypts plaintexts...