CVE-2026-71884

A flaw was found in Bouncy Castle. The native one-shot Counter CTR mode cipher fails to verify that the input data length fits within the counter space defined by the initialization vector. When processing overly long inputs, the counter wraps around and causes the keystream to repeat. This flaw...

CVE-2026-71884

In Bouncy Castle for Java LTS versions before 2.73.13 , a vulnerability exists in the native one-shot CTR packet cipher . The component fails to verify if the requested input length fits the remaining counter space left by an IV of 13 to 15 bytes. This allows the counter to wrap, causing the keys...

PT-2026-108806

In Bouncy Castle for Java LTS before 2.73.13, the native one-shot CTR packet cipher did not check that the requested input length fitted the counter space the IV left. In CTR mode the IV and the block counter share one 16-byte block, so an IV of 13 to 15 bytes leaves a counter of only 1 to 3 byte...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: crypto: s390/aes – Fix for buffer overreading in CTR mode When processing the last block, the s390 CTR code will always read a whole block, even if there is no data left in that block. This issue is fixed by using the actual...

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...

EUVD-2026-59939

In the Linux kernel, the following vulnerability has been resolved: crypto: algifskcipher - force synchronous processing on trees without ctx-state The AIO/async path in skcipherrecvmsg passes the socket-wide ctx-iv directly into the skcipher request. After iosubmit the socket lock is dropped and...

bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly

A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA bcprov. The GOSTCTR implementation is unable to securely process more than 255 blocks of data due to keystream reuse. This issue allows an attacker to break the fundamental confidentiality of any data protected by the G3413CTRBlockCiphe...

SUSE-SU-2026:21404-1 Security update for bouncycastle

This update for bouncycastle fixes the following issues: - Update to version 1.84: - CVE-2025-14813: GOSTCTR implementation unable to process more than 255 blocks correctly bsc1262225. - CVE-2026-0636: LDAP Injection Vulnerability in LDAPStoreHelper.java bsc1262226. - CVE-2026-3505: Unbounded PGP...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-006937)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006937 advisory. In the Linux kernel, the following vulnerability has been resolved: crypto: s390/aes - Fix buffer overread in CTR mode When processing the last block, the s390 ctr...

GHSA-574F-3G2M-X479 Bouncy Castle for Java GOST 28147 CTR mode reuses keystream after 255 blocks

The GOST 28147-2015 CTR mode implementation G3413CTRBlockCipher in the Legion of the Bouncy Castle BC-JAVA bcprov core module only increments the final byte of the counter, so the counter wraps after 255 blocks and the keystream is reused. Reusing CTR keystream allows an attacker who can observe...

CVE-2024-43108

CVE-2024-43108 affects the goTenna Pro ATAK Plugin. The vulnerability is due to AES-CTR encryption for short messages without any integrity checking, making messages malleable to an attacker who can access the message. Affected versions include 1.9.12 and earlier; mitigation guidance recommends u...

CVE-2024-47123 Missing Support for Integrity Check in goTenna Pro

The goTenna Pro App uses AES CTR type encryption for short, encrypted messages without any additional integrity checking mechanisms. This leaves messages malleable to an attacker that can access the message. It is recommended to continue to use encryption in the app and update to the current...

CVE-2024-25077

An issue was discovered on Renesas SmartBond DA14691, DA14695, DA14697, and DA14699 devices. The Nonce used for on-the-fly decryption of flash images is stored in an unsigned header, allowing its value to be modified without invalidating the signature used for secureboot image verification. Becau...

CVE-2024-25077

The Renesas SmartBond DA14691, DA14695, DA14697, and DA14699 devices are vulnerable to an issue where the Nonce used for on-the-fly decryption of flash images is stored in an unsigned header . This allows an attacker to modify the Nonce without invalidating the signature used for secureboot image...

PT-2024-20728 · Renesas · Renesas Smartbond

Name of the Vulnerable Software and Affected Versions: Renesas SmartBond versions DA14691, DA14695, DA14697, and DA14699 Description: An issue was discovered where the Nonce used for on-the-fly decryption of flash images is stored in an unsigned header, allowing its value to be modified without...

CVE-2024-25077

An issue was discovered on Renesas SmartBond DA14691, DA14695, DA14697, and DA14699 devices. The Nonce used for on-the-fly decryption of flash images is stored in an unsigned header, allowing its value to be modified without invalidating the signature used for secureboot image verification. Becau...

CVE-2024-25077: Improper Control of Generation of Code

An issue was discovered on Renesas SmartBond DA14691, DA14695, DA14697, and DA14699 devices. The Nonce used for on-the-fly decryption of flash images is stored in an unsigned header, allowing its value to be modified without invalidating the signature used for secureboot image verification. Becau...

kernel: crypto: s390/aes - Fix buffer overread in CTR mode

In the Linux kernel, the following vulnerability has been resolved: crypto: s390/aes - Fix buffer overread in CTR mode When processing the last block, the s390 ctr code will always read a whole block, even if there isn't a whole block of data left. Fix this by using the actual length left and cop...

SUSE CVE-2023-52669

In the Linux kernel, the following vulnerability has been resolved: crypto: s390/aes - Fix buffer overread in CTR mode When processing the last block, the s390 ctr code will always read a whole block, even if there isn't a whole block of data left. Fix this by using the actual length left and cop...

CVE-2023-52669

In the Linux kernel, the following vulnerability has been resolved: crypto: s390/aes - Fix buffer overread in CTR mode When processing the last block, the s390 ctr code will always read a whole block, even if there isn't a whole block of data left. Fix this by using the actual length left and cop...