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High 7.8Known exploited (CISA KEV)Published Apr 22, 2026
CVE-2026-31431crypto: algif_aead - Revert to operating out-of-place
Updated under an hour ago ()
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It affects Linux and 59 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since May 1, 2026; federal agencies had to remediate by May 15, 2026. Treat that date as your deadline.
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In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-669, CWE-1288
- Known exploited
- Added to CISA KEV May 1, 2026; federal remediation due May 15, 2026"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 3.44% (percentile 89)
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 builds before 893d22e0135fa394db81df88697fba6032747667; 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 builds before 19d43105a97be0810edbda875f2cd03f30dc130c; 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 builds before 961cfa271a918ad4ae452420e7c303149002875b; 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 builds before 3115af9644c342b356f3f07a4dd1c8905cd9a6fc; 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 builds before 8b88d99341f139e23bdeb1027a2a3ae10d341d82; from 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 before fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8; from 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 before ce42ee423e58dffa5ec03524054c9d8bfd4f6237; from 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 before a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5 | CNA record |
Siemens SIMATIC AX Runtime Core Linux Common Debian siemens:simatic_ax_runtime_core_linux_common_debian (from the name) | all versions | CISA ADP |
Siemens SIMATIC AX Runtime Core Linux Common Debian arm64 siemens:simatic_ax_runtime_core_linux_common_debian_arm64 (from the name) | all versions | CISA ADP |
Siemens SIMATIC AX Runtime Core Linux Platform Container Common Debian Development siemens:simatic_ax_runtime_core_linux_platform_container_common_debian_development (from the name) | all versions | CISA ADP |
Siemens SIMATIC AX Runtime Core Linux VMWare Development siemens:simatic_ax_runtime_core_linux_vmware_development (from the name) | all versions | CISA ADP |
Siemens SIMATIC CN 4100 siemens:simatic_cn_4100 (from the name) | before V6.0 | CISA ADP |
Siemens SIMATIC HMI MTP1000 Unified Basic siemens:simatic_hmi_mtp1000_unified_basic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1000 Unified Comfort Panel siemens:simatic_hmi_mtp1000_unified_comfort_panel (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1000 Unified Comfort Panel hygienic siemens:simatic_hmi_mtp1000_unified_comfort_panel_hygienic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1000 Unified Comfort Panel hygienic neutral design siemens:simatic_hmi_mtp1000_unified_comfort_panel_hygienic_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1000, Unified Comfort Panel neutral siemens:simatic_hmi_mtp1000_unified_comfort_panel_neutral (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Comfort Pro for stand (expandable, flange at the bottom) siemens:simatic_hmi_mtp1200_comfort_pro_for_stand_expandable_flange_at_the_bottom (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Comfort Pro for support arm (expandable, round tube) and extension unit siemens:simatic_hmi_mtp1200_comfort_pro_for_support_arm_expandable_round_tube_and_extension_unit (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Comfort Pro for support arm (not extendable, flange on top) siemens:simatic_hmi_mtp1200_comfort_pro_for_support_arm_not_extendable_flange_on_top (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Comfort Pro neutral design for stand (expandable, flange at the bottom) siemens:simatic_hmi_mtp1200_comfort_pro_neutral_design_for_stand_expandable_flange_at_the_bottom (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (expandable, round tube) and extension siemens:simatic_hmi_mtp1200_comfort_pro_neutral_design_for_support_arm_expandable_round_tube_and_extension (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Comfort Pro neutral design for support arm (not extendable, flange on top) siemens:simatic_hmi_mtp1200_comfort_pro_neutral_design_for_support_arm_not_extendable_flange_on_top (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Unified Basic siemens:simatic_hmi_mtp1200_unified_basic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Unified Comfort Panel siemens:simatic_hmi_mtp1200_unified_comfort_panel (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Unified Comfort Panel hygienic siemens:simatic_hmi_mtp1200_unified_comfort_panel_hygienic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Unified Comfort Panel hygienic neutral design siemens:simatic_hmi_mtp1200_unified_comfort_panel_hygienic_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1200 Unified Comfort Panel neutral design siemens:simatic_hmi_mtp1200_unified_comfort_panel_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Comfort Pro for stand (expandable, flange at the bottom) siemens:simatic_hmi_mtp1500_comfort_pro_for_stand_expandable_flange_at_the_bottom (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Comfort Pro for support arm (expandable, round tube) and extension unit siemens:simatic_hmi_mtp1500_comfort_pro_for_support_arm_expandable_round_tube_and_extension_unit (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Comfort Pro for support arm (not extendable, flange on top) siemens:simatic_hmi_mtp1500_comfort_pro_for_support_arm_not_extendable_flange_on_top (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Comfort Pro neutral design for stand (expandable, flange at the bottom) siemens:simatic_hmi_mtp1500_comfort_pro_neutral_design_for_stand_expandable_flange_at_the_bottom (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (expandable, round tube) and extension siemens:simatic_hmi_mtp1500_comfort_pro_neutral_design_for_support_arm_expandable_round_tube_and_extension (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Comfort Pro neutral design for support arm (not extendable, flange on top) siemens:simatic_hmi_mtp1500_comfort_pro_neutral_design_for_support_arm_not_extendable_flange_on_top (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Unified Comfort Panel siemens:simatic_hmi_mtp1500_unified_comfort_panel (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Unified Comfort Panel hygienic siemens:simatic_hmi_mtp1500_unified_comfort_panel_hygienic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Unified Comfort Panel hygienic neutral design siemens:simatic_hmi_mtp1500_unified_comfort_panel_hygienic_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1500 Unified Comfort Panel neutral design siemens:simatic_hmi_mtp1500_unified_comfort_panel_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Comfort Pro for stand (expandable, flange at the bottom) siemens:simatic_hmi_mtp1900_comfort_pro_for_stand_expandable_flange_at_the_bottom (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Comfort Pro for support arm (expandable, round tube) and extension unit siemens:simatic_hmi_mtp1900_comfort_pro_for_support_arm_expandable_round_tube_and_extension_unit (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Comfort Pro for support arm (not extendable, flange on top) siemens:simatic_hmi_mtp1900_comfort_pro_for_support_arm_not_extendable_flange_on_top (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Comfort Pro neutral design for stand (expandable, flange at the bottom) siemens:simatic_hmi_mtp1900_comfort_pro_neutral_design_for_stand_expandable_flange_at_the_bottom (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (expandable, round tube) and extension siemens:simatic_hmi_mtp1900_comfort_pro_neutral_design_for_support_arm_expandable_round_tube_and_extension (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Comfort Pro neutral design for support arm (not extendable, flange on top) siemens:simatic_hmi_mtp1900_comfort_pro_neutral_design_for_support_arm_not_extendable_flange_on_top (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Unified Comfort Panel siemens:simatic_hmi_mtp1900_unified_comfort_panel (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Unified Comfort Panel hygienic siemens:simatic_hmi_mtp1900_unified_comfort_panel_hygienic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Unified Comfort Panel hygienic neutral design siemens:simatic_hmi_mtp1900_unified_comfort_panel_hygienic_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP1900 Unified Comfort Panel neutral design siemens:simatic_hmi_mtp1900_unified_comfort_panel_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Comfort Pro for stand (expandable, flange at the bottom) siemens:simatic_hmi_mtp2200_comfort_pro_for_stand_expandable_flange_at_the_bottom (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Comfort Pro for support arm (expandable, round tube) and extension unit siemens:simatic_hmi_mtp2200_comfort_pro_for_support_arm_expandable_round_tube_and_extension_unit (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Comfort Pro for support arm (not extendable, flange on top) siemens:simatic_hmi_mtp2200_comfort_pro_for_support_arm_not_extendable_flange_on_top (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Comfort Pro neutral design for stand (expandable, flange at the bottom) siemens:simatic_hmi_mtp2200_comfort_pro_neutral_design_for_stand_expandable_flange_at_the_bottom (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Comfort Pro neutral design for support arm (expandable, round tube) and extension siemens:simatic_hmi_mtp2200_comfort_pro_neutral_design_for_support_arm_expandable_round_tube_and_extension (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Comfort Pro neutral design for support arm (not extendable, flange on top) siemens:simatic_hmi_mtp2200_comfort_pro_neutral_design_for_support_arm_not_extendable_flange_on_top (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Unified Comfort Hygienic siemens:simatic_hmi_mtp2200_unified_comfort_hygienic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Unified Comfort Hygienic neutral design siemens:simatic_hmi_mtp2200_unified_comfort_hygienic_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Unified Comfort Panel siemens:simatic_hmi_mtp2200_unified_comfort_panel (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP2200 Unified Comfort Panel neutral design siemens:simatic_hmi_mtp2200_unified_comfort_panel_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP400 Unified Basic siemens:simatic_hmi_mtp400_unified_basic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP700 Unified Basic siemens:simatic_hmi_mtp700_unified_basic (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP700 Unified Comfort Panel siemens:simatic_hmi_mtp700_unified_comfort_panel (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP700 Unified Comfort Panel hygienic neutral design siemens:simatic_hmi_mtp700_unified_comfort_panel_hygienic_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC HMI MTP700, Unified Comfort Panel neutral design siemens:simatic_hmi_mtp700_unified_comfort_panel_neutral_design (from the name) | before V21 Update 2 SR1 | CISA ADP |
Siemens SIMATIC IoT2050 Advanced siemens:simatic_iot2050_advanced (from the name) | all versions | CISA ADP |
Siemens SIMATIC IPC Industrial Edge Device OS (IED-OS) siemens:simatic_ipc_industrial_edge_device_os_ied_os (from the name) | all versions | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 before V3.1.7 | CISA ADP |
References
- https://git.kernel.org/stable/c/893d22e0135fa394db81df88697fba6032747667patch
- https://git.kernel.org/stable/c/19d43105a97be0810edbda875f2cd03f30dc130cpatch
- https://git.kernel.org/stable/c/961cfa271a918ad4ae452420e7c303149002875bpatch
- https://git.kernel.org/stable/c/3115af9644c342b356f3f07a4dd1c8905cd9a6fcpatch
- https://git.kernel.org/stable/c/8b88d99341f139e23bdeb1027a2a3ae10d341d82patch
- https://git.kernel.org/stable/c/fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8patch
- https://git.kernel.org/stable/c/ce42ee423e58dffa5ec03524054c9d8bfd4f6237patch
- https://git.kernel.org/stable/c/a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5patch
- http://www.openwall.com/lists/oss-security/2026/04/29/23exploit, mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/29/25mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/29/26exploit, mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/30/10mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/30/11mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/30/12mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/30/14mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/30/15mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/30/16mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/30/17mailing-list
- http://www.openwall.com/lists/oss-security/2026/04/30/18exploit, mailing-list
- http://www.openwall.com/lists/oss-security/2026/04/30/2mailing-list
- http://www.openwall.com/lists/oss-security/2026/04/30/20mailing-list
- http://www.openwall.com/lists/oss-security/2026/04/30/5exploit, mailing-list, patch
- http://www.openwall.com/lists/oss-security/2026/04/30/6mailing-list
- http://www.openwall.com/lists/oss-security/2026/05/01/10mailing-list
- http://www.openwall.com/lists/oss-security/2026/05/01/12mailing-list
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.