{"id":"CVE-2025-22057","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: decrease cached dst counters in dst_release\n\nUpstream fix ac888d58869b (\"net: do not delay dst_entries_add() in\ndst_release()\") moved decrementing the dst count fr…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: decrease cached dst counters in dst_release\n\nUpstream fix ac888d58869b (\"net: do not delay dst_entries_add() in\ndst_release()\") moved decrementing the dst count fr…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.6, < 6.6.87","linux_kernel >= 6.7, < 6.12.23","linux_kernel >= 6.13, < 6.13.11","linux_kernel >= 6.14, < 6.14.2"],"patched":["linux_kernel 6.14.2"],"published":"2025-04-16","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:18:14.350","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-22057","references":[{"url":"https://git.kernel.org/stable/c/3a0a3ff6593d670af2451ec363ccb7b18aec0c0a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/836415a8405c9665ae55352fc5ba865c242f5e4f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/92a5c18513117be69bc00419dd1724c1940f8fcd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ccc331fd5bcae131d2627d5ef099d4a1f6540aea","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e833e7ad64eb2f63867f65303be49ca30ee8819e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00213,"epssPercentile":0.1151,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:44:18.222733Z"},"ingestedAt":"2026-10-15T22:48:25.473Z","slug":"CVE-2025-22057","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: decrease cached dst counters in dst_release\n\nUpstream fix ac888d58869b (\"net: do not delay dst_entries_add() in\ndst_release()\") moved decrementing the dst count from dst_destroy to\ndst_release to avoid accessing already freed data in case of netns\ndismantle. However in case CONFIG_DST_CACHE is enabled and OvS+tunnels\nare used, this fix is incomplete as the same issue will be seen for\ncached dsts:\n\n  Unable to handle kernel paging request at virtual address ffff5aabf6b5c000\n  Call trace:\n   percpu_counter_add_batch+0x3c/0x160 (P)\n   dst_release+0xec/0x108\n   dst_cache_destroy+0x68/0xd8\n   dst_destroy+0x13c/0x168\n   dst_destroy_rcu+0x1c/0xb0\n   rcu_do_batch+0x18c/0x7d0\n   rcu_core+0x174/0x378\n   rcu_core_si+0x18/0x30\n\nFix this by invalidating the cache, and thus decrementing cached dst\ncounters, in dst_release too.\n\n## Affected\n\n- `linux_kernel >= 4.6, < 6.6.87`\n- `linux_kernel >= 6.7, < 6.12.23`\n- `linux_kernel >= 6.13, < 6.13.11`\n- `linux_kernel >= 6.14, < 6.14.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.14.2`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}