CVE-2022-49579: ipv4: Fix data-races around sysctl_fib_multipath_hash_policy.

CVE-2022-49579 PUBLISHED CVSS 4.7 MEDIUM

ipv4: Fix data-races around sysctl_fib_multipath_hash_policy.

Reported by linux · Published February 26, 2025

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.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

Package	Ecosystem	Fixed in
linux_kernel	linux	5.18.15, 5.15.58

Risk scores

CVSS 3.1

4.7

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Vendor	Product	Versions
Linux	Linux	bf4e0a3db97eb882368fd82980b3b1fa0b5b9778, bf4e0a3db97eb882368fd82980b3b1fa0b5b9778, bf4e0a3db97eb882368fd82980b3b1fa0b5b9778
Linux	Linux	4.12, 0, 5.15.58
linux	linux_kernel	4.12, 4.12, 4.12
Linux	Linux	, , *

Timeline

Feb 26, 2025 CVE Published
Feb 27, 2025 EPSS Score (30 in total, the first dated here)
May 23, 2026 Coalition ESS Score
Jun 2, 2026 Security Advisory

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References

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