CVE-2021-21781

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Summary

CVECVE-2021-21781
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-08-18 15:15:00 UTC
Updated2023-02-03 14:31:00 UTC
DescriptionAn information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11

Risk And Classification

Problem Types: CWE-908

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel 5.4.54 All All All
Operating System Linux Linux Kernel 5.4.66 All All All
Application Oracle Communications Cloud Native Core Binding Support Function 22.1.3 All All All
Application Oracle Communications Cloud Native Core Network Exposure Function 22.1.1 All All All
Application Oracle Communications Cloud Native Core Policy 22.2.0 All All All

References

ReferenceSourceLinkTags
TALOS-2021-1243 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence MISC talosintelligence.com
Oracle Critical Patch Update Advisory - July 2022 N/A www.oracle.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159825 Oracle Enterprise Linux Security Update for kernel (ELSA-2022-1988)
  • 178712 Debian Security Update for linux (DLA 2713-1)
  • 178714 Debian Security Update for linux (DLA 2713-2)
  • 179541 Debian Security Update for linux (CVE-2021-21781)
  • 240298 Red Hat Update for kernel security (RHSA-2022:1988)
  • 353097 Amazon Linux Security Advisory for kernel : ALAC2012-2021-033
  • 353098 Amazon Linux Security Advisory for kmod-sfc : ALAC2012-2021-034
  • 353099 Amazon Linux Security Advisory for kmod-mlx5 : ALAC2012-2021-035
  • 610400 Google Pixel Android March 2022 Security Patch Missing
  • 670707 EulerOS Security Update for kernel (EulerOS-SA-2021-2465)
  • 671033 EulerOS Security Update for kernel (EulerOS-SA-2021-2569)
  • 671181 EulerOS Security Update for kernel (EulerOS-SA-2021-2934)
  • 671703 EulerOS Security Update for kernel (EulerOS-SA-2022-1735)
  • 750949 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1142-1)
  • 750953 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:2645-1)
  • 750963 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:2687-1)
  • 940517 AlmaLinux Security Update for kernel (ALSA-2022:1988)
  • 960134 Rocky Linux Security Update for kernel (RLSA-2022:1988)
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