CVE-2021-29155

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Summary

CVECVE-2021-29155
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-04-20 16:15:00 UTC
Updated2023-11-07 03:32:00 UTC
DescriptionAn issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer arithmetic operations, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.

Risk And Classification

Problem Types: CWE-125

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

References

ReferenceSourceLinkTags
[SECURITY] Fedora 33 Update: kernel-5.11.16-200.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 34 Update: kernel-5.11.16-300.fc34 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 34 Update: kernel-5.11.16-300.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: kernel-5.11.16-200.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
oss-security - [CVE-2021-29155] Linux kernel protection for sequences of pointer arithmetic operations against speculatively out-of-bounds loads can be bypassed to leak content of kernel memory MISC www.openwall.com
[SECURITY] Fedora 32 Update: kernel-5.11.16-100.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] [DLA 2690-1] linux-4.19 security update MLIST lists.debian.org
The Linux Kernel Archives MISC www.kernel.org
[SECURITY] Fedora 32 Update: kernel-5.11.16-100.fc32 - package-announce - Fedora Mailing-Lists 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)
  • 174997 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1571-1)
  • 178679 Debian Security Update for linux-4.19 (DLA 2690-1)
  • 179965 Debian Security Update for linux (CVE-2021-29155)
  • 198396 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4977-1)
  • 198402 Ubuntu Security Notification for Linux kernel (OEM) vulnerabilities (USN-4983-1)
  • 198417 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4999-1)
  • 239816 Red Hat Update for kernel security (RHSA-2021:4356)
  • 239879 Red Hat Update for kernel-rt (RHSA-2021:4140)
  • 281274 Fedora Security Update for kernel (FEDORA-2021-a963f04012)
  • 281275 Fedora Security Update for kernel (FEDORA-2021-e6b4847979)
  • 281276 Fedora Security Update for kernel (FEDORA-2021-8cd093f639)
  • 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
  • 610372 Google Pixel Android October 2021 Security Patch Missing
  • 6140050 AWS Bottlerocket Security Update for kernel (GHSA-p6gr-qgv9-5r3p)
  • 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)
  • 750001 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1572-1)
  • 750003 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1574-1)
  • 750004 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1573-1)
  • 750005 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1595-1)
  • 750006 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1596-1)
  • 750012 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1622-1)
  • 750015 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1624-1)
  • 750137 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1915-1)
  • 750216 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0716-1)
  • 750643 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0873-1)
  • 750650 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1975-1)
  • 750652 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1977-1)
  • 750762 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1977-1)
  • 750766 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1975-1)
  • 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
  • 901529 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (6545-1)
  • 903583 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (4119)
  • 906112 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (4119-1)
  • 940265 AlmaLinux Security Update for kernel (ALSA-2021:4356)
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