Allocation of Resources Without Limits or Throttling Affecting kernel-devel package, versions <5.3.18-24.52.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-SLES152-KERNELDEVEL-2687377
  • published14 Apr 2022
  • disclosed9 Mar 2021

Introduced: 9 Mar 2021

CVE-2021-26931  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade SLES:15.2 kernel-devel to version 5.3.18-24.52.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-devel package and not the kernel-devel package as distributed by SLES. See How to fix? for SLES:15.2 relevant fixed versions and status.

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.

CVSS Scores

version 3.1