CVE-2021-26931

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Summary

CVECVE-2021-26931
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-02-17 02:15:00 UTC
Updated2023-11-07 03:31:00 UTC
DescriptionAn issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.

Risk And Classification

Problem Types: CWE-770

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 32 All All All
Operating System Fedoraproject Fedora 33 All All All
Operating System Linux Linux Kernel All All All All

References

ReferenceSourceLinkTags
XSA-362 - Xen Security Advisories MISC xenbits.xen.org Patch, Third Party Advisory
[SECURITY] Fedora 33 Update: kernel-5.10.18-200.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] [DLA 2586-1] linux security update MLIST lists.debian.org
[SECURITY] [DLA 2610-1] linux-4.19 security update MLIST lists.debian.org
February 2021 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
[SECURITY] Fedora 32 Update: kernel-5.10.18-100.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Patch, Third Party Advisory
[SECURITY] Fedora 32 Update: kernel-5.10.18-100.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: kernel-5.10.18-200.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org Mailing List, Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159132 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9135)
  • 159133 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9136)
  • 174764 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0738-1)
  • 174768 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0735-1)
  • 174770 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0741-1)
  • 174772 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0737-1)
  • 174774 SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2021:0740-1)
  • 174897 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1175-1)
  • 174916 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1210-1)
  • 174950 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 21 for SLE 15) (SUSE-SU-2021:1344-1)
  • 174954 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 36 for SLE 12 SP3) (SUSE-SU-2021:1373-1)
  • 174955 SUSE Enterprise Linux Security Update for the Linux Kernel (Live Patch 17 for SLE 15 SP1) (SUSE-SU-2021:1365-1)
  • 178507 Debian Security Update for linux-4.19 (DLA 2610-1)
  • 179857 Debian Security Update for linux (CVE-2021-26931)
  • 198323 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4904-1)
  • 198325 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4909-1)
  • 198366 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4949-1)
  • 198371 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4946-1)
  • 352244 Amazon Linux Security Advisory for kernel: ALAS-2021-1487
  • 352254 Amazon Linux Security Advisory for kernel: ALAS2-2021-1616
  • 353100 Amazon Linux Security Advisory for kernel : ALAC2012-2021-024
  • 353101 Amazon Linux Security Advisory for kmod-mlx5 : ALAC2012-2021-025
  • 353102 Amazon Linux Security Advisory for kmod-sfc : ALAC2012-2021-026
  • 353150 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-001
  • 379053 Citrix XenServer Security Updates (CTX296603)
  • 6140382 AWS Bottlerocket Security Update for kernel (GHSA-g55q-88v2-6r3m)
  • 671804 EulerOS Security Update for kernel (EulerOS-SA-2022-1844)
  • 750004 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1573-1)
  • 750006 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1596-1)
  • 750014 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1623-1)
  • 750015 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1624-1)
  • 750324 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0393-1)
  • 900098 CBL-Mariner Linux Security Update for kernel 5.4.91
  • 903482 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3896)
  • 906082 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (3896-1)
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