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CVE-2022-49579

ipv4: Fix data-races around sysctl_fib_multipath_hash_policy.

Medium4.7EPSS 0.18%
Published
Updated
Reserved
Assigned by
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: ipv4: Fix data-races around sysctl_fib_multipath_hash_policy. While reading sysctl_fib_multipath_hash_policy, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 15 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2022-49579, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1Medium4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1Medium4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.18% · top 92% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.

Weakness

Affected products

  • Linux · Linux

    • affected bf4e0a3db97eb882368fd82980b3b1fa0b5b9778 – < 21fb844bc1dc1461f5038d655aa1a14f39e13049
    • affected bf4e0a3db97eb882368fd82980b3b1fa0b5b9778 – < 918ee6592ab9a2ff5316d06cfd4aaef60ccabec6
    • affected bf4e0a3db97eb882368fd82980b3b1fa0b5b9778 – < 7998c12a08c97cc26660532c9f90a34bd7d8da5a

  • Linux · Linux

    • affected 4.12
    • unaffected < 4.12
    • unaffected 5.15.58 – ≤ 5.15.*
    • unaffected 5.18.15 – ≤ 5.18.*
    • unaffected 5.19 – ≤ *

References (3)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .