Buffer overflow in Linux Linux_kernel

CVE-2021-27365

An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is ass…

Vulnerability class: Buffer Overflow

EPSS: 0.021 (79.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/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 (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
  • cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (Mailing List, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (VDB Entry, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
  • cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
  • cve@mitre.org (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)
  • cve@mitre.org (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-27365?
CVE-2021-27365 is a high-severity vulnerability in Linux Linux_kernel, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-03-07.
How severe is CVE-2021-27365?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-27365 known to be exploited?
33 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.