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CVE-2021-26931

CVSS v3.1 5.5 (Medium)
55% Progress
CVSS v2.0 1.9 (Low)
19% Progress
EPSS 0.04 % (15th)
0.04% Progress
Affected Products 3
Advisories 37
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

An 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.

Weaknesses
CWE-770
Allocation of Resources Without Limits or Throttling
Related CVEs
CVE Status
PUBLISHED
CNA
MITRE
Published Date
2021-02-17 02:15:12
(3 years ago)
Updated Date
2024-03-25 01:15:50
(5 months ago)

Affected Products

Debian

Fedoraproject

Linux

Configuration #1

    CPE23 From Up To
  Linux Kernel from 2.6.39 version and 5.10.16 and prior versions cpe:2.3:o:linux:linux_kernel >= 2.6.39 <= 5.10.16

Configuration #2

    CPE23 From Up To
  Fedoraproject Fedora 32 cpe:2.3:o:fedoraproject:fedora:32
  Fedoraproject Fedora 33 cpe:2.3:o:fedoraproject:fedora:33

Configuration #3

    CPE23 From Up To
  Debian Linux 9.0 cpe:2.3:o:debian:debian_linux:9.0