CVE-2022-49110 Affecting kernel-default package, versions <5.14.21-150500.55.103.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-SLES155-KERNELDEFAULT-10223838
  • published22 May 2025
  • disclosed21 May 2025

Introduced: 21 May 2025

NewCVE-2022-49110  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 kernel-default to version 5.14.21-150500.55.103.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default package and not the kernel-default package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack: revisit gc autotuning

as of commit 4608fdfc07e1 ("netfilter: conntrack: collect all entries in one cycle") conntrack gc was changed to run every 2 minutes.

On systems where conntrack hash table is set to large value, most evictions happen from gc worker rather than the packet path due to hash table distribution.

This causes netlink event overflows when events are collected.

This change collects average expiry of scanned entries and reschedules to the average remaining value, within 1 to 60 second interval.

To avoid event overflows, reschedule after each bucket and add a limit for both run time and number of evictions per run.

If more entries have to be evicted, reschedule and restart 1 jiffy into the future.

CVSS Base Scores

version 3.1