# CVE-2023-1255: libssl3t64: Issue summary: The AES-XTS cipher decryption implementation for 64 bit ARMplatform contains a bug that could cause it... CVE-2023-1255 is fixed in 9 products on 1 platform, first by DEBIAN-CVE-2023-1255, released April 20, 2023. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2023-1255 - Priority: Routine - CVSS: 5.9 (Low) - EPSS: 0.0095 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Apr 20, 2023 ## Description Issue summary: The AES-XTS cipher decryption implementation for 64 bit ARMplatform contains a bug that could cause it to read past the input buffer,leading to a crash.Impact summary: Applications that use the AES-XTS algorithm on the 64 bitARMplatform can crash in rare circumstances. The AES-XTS algorithm is usuallyused for disk encryption.The AES-XTS cipher decryption implementation for 64 bit ARM platform willreadpast the end of the ciphertext buffer if the ciphertext size is 4 mod 5 in16byte blocks, e.g. 144 bytes or 1024 bytes. If the memory after theciphertextbuffer is unmapped, this will trigger a crash which results in a denial ofservice.If an attacker can control the size and location of the ciphertext bufferbeing decrypted by an application using AES-XTS on 64 bit ARM, theapplication is affected. This is fairly unlikely making this issuea Low severity one. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libssl3 Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.10 | [libssl3 3.0.2-0ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libssl3-3.0.2-0ubuntu1.10.md) | May 29, 2023 | | Linux | libssl3t64 Ubuntu 24.10 (oracular) | 3.0.8-1ubuntu3 | [libssl3t64 3.0.8-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libssl3t64-3.0.8-1ubuntu3.md) | May 30, 2023 | | Linux | libssl3t64 Ubuntu 25.04 (plucky) | 3.0.8-1ubuntu3 | [libssl3t64 3.0.8-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libssl3t64-3.0.8-1ubuntu3.md) | May 30, 2023 | | Linux | openssl Debian 12.15 (bookworm) | 3.0.9-1 | [DEBIAN-CVE-2023-1255](https://patchblox.com/security/data/fix/linux/debian-cve-2023-1255.md) | Apr 20, 2023 | | Linux | openssl Debian 13.5 (trixie) | 3.0.9-1 | [DEBIAN-CVE-2023-1255](https://patchblox.com/security/data/fix/linux/debian-cve-2023-1255.md) | Apr 20, 2023 | | Linux | openssl Debian 14 | 3.0.9-1 | [DEBIAN-CVE-2023-1255](https://patchblox.com/security/data/fix/linux/debian-cve-2023-1255.md) | Apr 20, 2023 | | Linux | openssl RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.10 | [openssl 3.0.2-0ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssl-3.0.2-0ubuntu1.10.md) | May 29, 2023 | | Linux | openssl Ubuntu 24.10 (oracular) | 3.0.8-1ubuntu3 | [openssl 3.0.8-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-openssl-3.0.8-1ubuntu3.md) | May 30, 2023 | | Linux | openssl Ubuntu 25.04 (plucky) | 3.0.8-1ubuntu3 | [openssl 3.0.8-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openssl-3.0.8-1ubuntu3.md) | May 30, 2023 | | Linux | openssl almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 | | Linux | openssl-debuginfo amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-debugsource amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-devel RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-devel almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-devel amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-devel ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 | | Linux | openssl-libs RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-libs almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-libs amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-libs ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 | | Linux | openssl-libs-debuginfo amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-perl RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-perl almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-perl amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-perl ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 | --- Data as of 2026-11-08T13:06:02Z UTC. 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