CVE-2026-63824
Security update for the Linux Kernel
Description
In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctl_pkey_params_get_2() The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the size of the maximum length of the cryptographic primitive instead of caller provided size.
Metrics
Reanalysis & status changes
Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.
- CVE Modified2026-08-17 05:17 UTC· 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- Affected: Linux, Linux → Linux, Linux
- New CVE Received2026-07-19 12:16 UTC· 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- Affected: Linux, Linux
- Description: In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctl_pkey_params_get_2() The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the size of the maximum length of the cryptographic primitive instead of caller provided size.
- Reference: https://git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3
- Reference: https://git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8d
Affected operating systems
linux
amazon / amazon_linux
linux
suse / basesystem_module15
linux
debian / debian_linux11.0
linux
debian / debian_linux12.0
linux
debian / debian_linux13.0
linux
suse / development_tools_module15
linux
redhat / enterprise_linux10.0
linux
redhat / enterprise_linux8.0
linux
redhat / enterprise_linux9.0
linux
redhat / enterprise_linux_aus8.4
linux
redhat / enterprise_linux_aus8.6
linux
redhat / enterprise_linux_eus10.0
linux
redhat / enterprise_linux_eus8.4
linux
redhat / enterprise_linux_eus9.4
linux
redhat / enterprise_linux_eus9.6
linux
redhat / enterprise_linux_tus8.6
linux
redhat / enterprise_linux_tus8.8
linux
redhat / enterprise_linux_update_services_for_sap_solutions8.6
linux
redhat / enterprise_linux_update_services_for_sap_solutions8.8
linux
redhat / enterprise_linux_update_services_for_sap_solutions9.0
linux
redhat / enterprise_linux_update_services_for_sap_solutions9.2
linux
opensuse / leap15.3
linux
opensuse / leap15.4
linux
opensuse / leap15.5
Affected products
Products and version ranges extracted from the vendor/CERT advisory. A range like „<4.14.6“ implies the update recommendation „upgrade to 4.14.6 or later“.
AMD
ProzessorEPYC Series
AMD
ProzessorRyzen
arista
cloudvision_agni2024.4.0 – 2025.2.2
arista
cloudvision_portal2024.2.0 – 2026.1.0
arista
velocloud_edge4.5.0 – 6.4.1
arista
velocloud_gateway
arista
velocloud_orchestrator
Dell
NetWorkerVirtual Edition
Dell
PowerProtect Data Domain7.10.1.70
Dell
PowerProtect Data Domain7.13.1.40
Dell
PowerProtect Data Domain8.3.1.10
Dell
PowerProtect Data Domain8.4.0.0
IBM
QRadar SIEM7.5.0 UP10 IF01
IBM
QRadar SIEM7.5.0 UP11
IBM
QRadar SIEM<7.5.0 UP15 IF06
IBM
Security Guardium12
IBM
Storage Scale6.1.9.5
IBM
Storage Scale6.2.2.0
Juniper
Junos Space24.1R2
Oracle
VM3
redhat
openshift_container_platform4.12 – 4.12.89
redhat
openshift_container_platform4.13 – 4.13.66
redhat
openshift_container_platform4.14 – 4.14.65
redhat
openshift_container_platform4.15 – 4.15.64
References & sources
- https://git.kernel.org/stable/c/d88541ffd56d62a61e77209080001eddd4d69815euvd
- https://git.kernel.org/stable/c/43f5b19fd190fea20d052bc84741b28031d5baa9euvd
- https://git.kernel.org/stable/c/5f4061f8225d18695e5afe9bbf1cb7bd673d7872euvd
- https://git.kernel.org/stable/c/e5a75bf026c686b91a7dc6f9c5caf5016745d1feeuvd
- https://git.kernel.org/stable/c/c4ea7d8907cf72b259bf70bd8c2e791e1c4ff70feuvd
- https://git.kernel.org/stable/c/f12afddfb142587d786df9e3cc4862190d3e2ec8euvd
- https://git.kernel.org/stable/c/168f6fbde0eabd71d1f4133df7d001a950b96977euvd
- https://git.kernel.org/stable/c/f79edef79b6a2161f4124112f9b0c46891bb0b74euvd
- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3016.html
- https://git.kernel.org/stable/c/76b94cbd32aacf36a641956385a852635c6802b9
- https://git.kernel.org/stable/c/c8e4e0c701d0192a2efb6df059c0f9e19678c23d
- https://git.kernel.org/stable/c/6c344fff2feff9d4d716d8e4ad40e9b5040ee5ea
- https://git.kernel.org/stable/c/427ab81a811dab4bca9d19f82eec5847ae42646e
- https://git.kernel.org/stable/c/012d37a568bfbb2c9686f03ade75560bc7139956
- https://git.kernel.org/stable/c/30aae62e50b4e074a90a9a5e15246548fbdc1182
- https://git.kernel.org/stable/c/41fe0f7b84f0cb822ae10ab08592996a592b2a25
- https://git.kernel.org/stable/c/7d7c9f0fcd19c4d2f0164347c58d49cafa961b72euvd
- https://git.kernel.org/stable/c/11c1431d641e0e4e0529e96957995820600c7287euvd
- https://git.kernel.org/stable/c/012796f9541fcd0c1fa8ae4da7eb4d83931ef838euvd
- https://git.kernel.org/stable/c/7d94f155f354b961c598f71bafa804dceded513feuvd
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—