CVE-2021-20261

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Summary

CVECVE-2021-20261
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-11 21:15:00 UTC
Updated2021-03-19 13:08:00 UTC
DescriptionA race condition was found in the Linux kernels implementation of the floppy disk drive controller driver software. The impact of this issue is lessened by the fact that the default permissions on the floppy device (/dev/fd0) are restricted to root. If the permissions on the device have changed the impact changes greatly. In the default configuration root (or equivalent) permissions are required to attack this flaw.

Risk And Classification

Problem Types: CWE-362

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel 4.5 - All All
Operating System Linux Linux Kernel 4.5 rc1 All All
Operating System Linux Linux Kernel 4.5 rc2 All All
Operating System Linux Linux Kernel 4.5 rc3 All All
Operating System Linux Linux Kernel 4.5 rc4 All All
Operating System Redhat Enterprise Linux 7.0 All All All

References

ReferenceSourceLinkTags
1932150 – (CVE-2021-20261) CVE-2021-20261 kernel: panic on multiple access to floppy device MISC bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Mailing List, Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159175 Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9215)
  • 174996 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:14724-1)
  • 179561 Debian Security Update for linux (CVE-2021-20261)
  • 198323 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4904-1)
  • 390225 Oracle Managed Virtualization (VM) Server for x86 Security Update for kernel (OVMSA-2021-0016)
  • 670269 EulerOS Security Update for kernel (EulerOS-SA-2021-1808)
  • 670320 EulerOS Security Update for kernel (EulerOS-SA-2021-1904)
  • 670634 EulerOS Security Update for kernel (EulerOS-SA-2021-2392)
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