Vulnerability in Linux Linux_kernel

CVE-2021-26708

A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced…

EPSS: 0.016 (72.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)
  • cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
  • cve@mitre.org (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
  • cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List)

Frequently asked questions

What is CVE-2021-26708?
CVE-2021-26708 is a high-severity vulnerability in Linux Linux_kernel, classified under Improper Locking. CVSS score: 7.0/10. Published 2021-02-05.
How severe is CVE-2021-26708?
High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2021-26708 known to be exploited?
45 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.