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CVE-2025-22057

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: decrease cached dst counters in dst_release Upstream fix ac888d58869b ("net: do not delay dst_entries_add() in dst_release…

Published Apr 16, 2025EPSS 0.21%

Overview

CVE-2025-22057 is a high-severity vulnerability. It was published on April 16, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

net: decrease cached dst counters in dst_release

Upstream fix ac888d58869b ("net: do not delay dst_entries_add() in

dst_release()") moved decrementing the dst count from dst_destroy to

dst_release to avoid accessing already freed data in case of netns

dismantle. However in case CONFIG_DST_CACHE is enabled and OvS+tunnels

are used, this fix is incomplete as the same issue will be seen for

cached dsts:

Unable to handle kernel paging request at virtual address ffff5aabf6b5c000

Call trace:

percpu_counter_add_batch+0x3c/0x160 (P)

dst_release+0xec/0x108

dst_cache_destroy+0x68/0xd8

dst_destroy+0x13c/0x168

dst_destroy_rcu+0x1c/0xb0

rcu_do_batch+0x18c/0x7d0

rcu_core+0x174/0x378

rcu_core_si+0x18/0x30

Fix this by invalidating the cache, and thus decrementing cached dst

counters, in dst_release too.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/3a0a3ff6593d670af2451ec363ccb7b18aec0c0aRefgit.kernel.org/stable/c/836415a8405c9665ae55352fc5ba865c242f5e4fRefgit.kernel.org/stable/c/92a5c18513117be69bc00419dd1724c1940f8fcdRefgit.kernel.org/stable/c/ccc331fd5bcae131d2627d5ef099d4a1f6540aeaRefgit.kernel.org/stable/c/e833e7ad64eb2f63867f65303be49ca30ee8819e

How CyberStrike helps

Frequently asked questions

What is CVE-2025-22057?

CVE-2025-22057 is a high-severity vulnerability. It was published on April 16, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-22057?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-22057?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-22057?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-22057 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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