# CVE-2024-21853: ucode-intel: This update for ucode-intel fixes the following issues: - Intel CPU Microcode was updated to the 20241112 release (b... CVE-2024-21853 is fixed in 3 products on 1 platform, first by ALAS2023-2024-748, released October 24, 2024. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2024-21853 - Priority: Routine - CVSS: n/a (Medium) - EPSS: 0.0023 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 24, 2024 ## Description This update for ucode-intel fixes the following issues: - Intel CPU Microcode was updated to the 20241112 release (bsc#1233313) - CVE-2024-21853: Faulty finite state machines (FSMs) in the hardware logic in some 4th and 5th Generation Intel Xeon Processors may allow an authorized user to potentially enable denial of service via local access. - CVE-2024-23918: Improper conditions check in some Intel Xeon processor memory controller configurations when using Intel SGX may allow a privileged user to potentially enable escalation of privilege via local access. - CVE-2024-21820: Incorrect default permissions in some Intel Xeon processor memory controller configurations when using Intel SGX may allow a privileged user to potentially enable escalation of privilege via local access. - CVE-2024-24968: Improper finite state machines (FSMs) in hardware logic in some Intel Processors may allow an privileged user to potentially enable a denial of service via local access. - CVE-2024-23984: Observable discrepancy in RAPL interface for some Intel Processors may allow a privileged user to potentially enable information disclosure via local access. - Update for functional issues. New Platforms: | Processor | Stepping | F-M-S/PI | Old Ver | New Ver | Products |:---------------|:---------|:------------|:---------|:---------|:--------- Updated Platforms: | Processor | Stepping | F-M-S/PI | Old Ver | New Ver | Products |:---------------|:---------|:------------|:---------|:---------|:--------- | ADL | C0 | 06-97-02/07 | 00000036 | 00000037 | Core Gen12 | ADL | H0 | 06-97-05/07 | 00000036 | 00000037 | Core Gen12 | ADL | L0 | 06-9a-03/80 | 00000434 | 00000435 | Core Gen12 | ADL | R0 | 06-9a-04/80 | 00000434 | 00000435 | Core Gen12 | EMR-SP | A0 | 06-cf-01/87 | 21000230 | 21000283 | Xeon Scalable Gen5 | EMR-SP | A1 | 06-cf-02/87 | 21000230 | 21000283 | Xeon Scalable Gen5 | MTL | C0 | 06-aa-04/e6 | 0000001f | 00000020 | Core™ Ultra Processor | RPL-H/P/PX 6+8 | J0 | 06-ba-02/e0 | 00004122 | 00004123 | Core Gen13 | RPL-HX/S | C0 | 06-bf-02/07 | 00000036 | 00000037 | Core Gen13/Gen14 | RPL-S | H0 | 06-bf-05/07 | 00000036 | 00000037 | Core Gen13/Gen14 | RPL-U 2+8 | Q0 | 06-ba-03/e0 | 00004122 | 00004123 | Core Gen13 | SPR-SP | E3 | 06-8f-06/87 | 2b0005c0 | 2b000603 | Xeon Scalable Gen4 | SPR-SP | E4/S2 | 06-8f-07/87 | 2b0005c0 | 2b000603 | Xeon Scalable Gen4 | SPR-SP | E5/S3 | 06-8f-08/87 | 2b0005c0 | 2b000603 | Xeon Scalable Gen4 New Disclosures Updated in Prior Releases: | Processor | Stepping | F-M-S/PI | Old Ver | New Ver | Products |:---------------|:---------|:------------|:---------|:---------|:--------- | ICL-D | B0 | 06-6c-01/10 | 010002b0 | N/A | Xeon D-17xx/D-18xx, D-27xx/D-28xx | ICX-SP | Dx/M1 | 06-6a-06/87 | 0d0003e7 | N/A | Xeon Scalable Gen3 - Intel CPU Microcode was updated to the 20241029 release Update for functional issues. Updated Platforms: | Processor | Stepping | F-M-S/PI | Old Ver | New Ver | Products |:---------------|:---------|:------------|:---------|:---------|:--------- | RPL-E/HX/S | B0 | 06-b7-01/32 | 00000129 | 0000012b | Core Gen13/Gen14 ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | intel-microcode Debian 12.15 (bookworm) | 3.20241112.1~deb12u1 | [DEBIAN-CVE-2024-21853](https://patchblox.com/security/data/fix/linux/debian-cve-2024-21853.md) | Nov 13, 2024 | | Linux | intel-microcode Debian 13.5 (trixie) | 3.20241112.1 | [DEBIAN-CVE-2024-21853](https://patchblox.com/security/data/fix/linux/debian-cve-2024-21853.md) | Nov 13, 2024 | | Linux | intel-microcode Debian 14 | 3.20241112.1 | [DEBIAN-CVE-2024-21853](https://patchblox.com/security/data/fix/linux/debian-cve-2024-21853.md) | Nov 13, 2024 | | Linux | intel-microcode Ubuntu 18.04.6 LTS (bionic) | 3.20241112.0ubuntu0.18.04.1+esm1 | [intel-microcode 3.20241112.0ubuntu0.18.04.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-intel-microcode-3.20241112.0ubuntu0.18.04.1-esm1.md) | Nov 13, 2024 | | Linux | intel-microcode Ubuntu 20.04 LTS (focal) | 3.20241112.0ubuntu0.20.04.1 | [intel-microcode 3.20241112.0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-intel-microcode-3.20241112.0ubuntu0.20.04.1.md) | Nov 13, 2024 | | Linux | intel-microcode Ubuntu 22.04.1 LTS (jammy) | 3.20241112.0ubuntu0.22.04.1 | [intel-microcode 3.20241112.0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-intel-microcode-3.20241112.0ubuntu0.22.04.1.md) | Nov 13, 2024 | | Linux | intel-microcode Ubuntu 24.04.5 LTS (noble) | 3.20241112.0ubuntu0.24.04.1 | [intel-microcode 3.20241112.0ubuntu0.24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-intel-microcode-3.20241112.0ubuntu0.24.04.1.md) | Nov 13, 2024 | | Linux | intel-microcode Ubuntu 24.10 (oracular) | 3.20241112.0ubuntu0.24.10.1 | [intel-microcode 3.20241112.0ubuntu0.24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-intel-microcode-3.20241112.0ubuntu0.24.10.1.md) | Jan 16, 2026 | | Linux | microcode_ctl amzn 2023 | 2:2.1-53.amzn2023.0.9 | [ALAS2023-2024-748](https://patchblox.com/security/data/fix/linux/alas2023-2024-748.md) | Oct 24, 2024 | | Linux | ucode-intel opensuse-leap 15.6 | 20241112-150200.50.1 | [SUSE-SU-2024:4053-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-4053-1.md) | Nov 26, 2024 | | Linux | ucode-intel sles 15.6 | 20241112-150200.50.1 | [SUSE-SU-2024:4053-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-4053-1.md) | Nov 26, 2024 | --- Data as of 2026-11-08T19:12:23Z UTC. 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