GHSA-f6x4-fwp3-vv23

GHSA-f6x4-fwp3-vv23 PUBLISHED CVSS 5.5 MEDIUM

Record from GitHub Advisory Database · Published April 16, 2025

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.

Risk scores

CVSS 3.1

5.5

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

Timeline

Apr 16, 2025 CVE Published
May 1, 2026 Security Advisory

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The same record, from the CLI:

vulnetix vdb vuln GHSA-f6x4-fwp3-vv23
vulnetix vdb fixes GHSA-f6x4-fwp3-vv23

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  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-f6x4-fwp3-vv23/fixes/registry"

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