CVE-2021-31829

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Summary

CVECVE-2021-31829
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-05-06 16:15:00 UTC
Updated2023-11-07 03:35:00 UTC
Descriptionkernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.

Risk And Classification

Problem Types: CWE-863

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 9.0 All All All
Operating System Fedoraproject Fedora 32 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Fedoraproject Fedora 34 All All All
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel All All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 33 Update: kernel-5.11.19-200.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
oss-security - [CVE-2021-31829] Linux kernel protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory MISC www.openwall.com
[SECURITY] Fedora 32 Update: kernel-5.11.19-100.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 34 Update: kernel-tools-5.11.19-300.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 34 Update: kernel-tools-5.11.19-300.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 32 Update: kernel-5.11.19-100.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
bpf: Fix leakage of uninitialized bpf stack under speculation · torvalds/linux@801c605 · GitHub MISC github.com
[SECURITY] [DLA 2690-1] linux-4.19 security update MLIST lists.debian.org
[SECURITY] Fedora 33 Update: kernel-5.11.19-200.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159306 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9362)
  • 159307 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9363)
  • 159492 Oracle Enterprise Linux Security Update for kernel (ELSA-2021-4356)
  • 178679 Debian Security Update for linux-4.19 (DLA 2690-1)
  • 179875 Debian Security Update for linux (CVE-2021-31829)
  • 198402 Ubuntu Security Notification for Linux kernel (OEM) vulnerabilities (USN-4983-1)
  • 198416 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4997-1)
  • 198417 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4999-1)
  • 198418 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-5000-1)
  • 198425 Ubuntu Security Notification for Linux kernel (KVM) vulnerabilities (USN-5000-2)
  • 198426 Ubuntu Security Notification for Linux kernel (KVM) vulnerabilities (USN-4997-2)
  • 198459 Ubuntu Security Notification for Linux, Linux-aws, Linux-aws-hwe, Linux-azure, Linux-azure-4.15, Linux-gcp, (USN-5018-1)
  • 239816 Red Hat Update for kernel security (RHSA-2021:4356)
  • 239879 Red Hat Update for kernel-rt (RHSA-2021:4140)
  • 281177 Fedora Security Update for kernel (FEDORA-2021-9c0276e935)
  • 281178 Fedora Security Update for kernel (FEDORA-2021-7c085ca697)
  • 281179 Fedora Security Update for kernel (FEDORA-2021-5ad5249c43)
  • 352366 Amazon Linux Security Advisory for kernel: ALAS-2021-1503
  • 352375 Amazon Linux Security Advisory for kernel: ALAS2-2021-1636
  • 353148 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-003
  • 353159 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2022-001
  • 6140161 AWS Bottlerocket Security Update for kernel (GHSA-9f3j-c23v-mp5f)
  • 670488 EulerOS Security Update for kernel (EulerOS-SA-2021-2246)
  • 670514 EulerOS Security Update for kernel (EulerOS-SA-2021-2272)
  • 670543 EulerOS Security Update for kernel (EulerOS-SA-2021-2301)
  • 900096 CBL-Mariner Linux Security Update for kernel 5.10.52.1
  • 900304 CBL-Mariner Linux Security Update for kernel 5.10.57.1
  • 900319 CBL-Mariner Linux Security Update for kernel 5.10.60.1
  • 901108 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (6557-1)
  • 903649 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (4179)
  • 906242 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (4179-1)
  • 940265 AlmaLinux Security Update for kernel (ALSA-2021:4356)
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