{"id":"CVE-2026-74427","title":"afs: Fix netns teardown to cancel the preallocation charger","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix netns teardown to cancel the preallocation charger\n\nFix the teardown of an afs network namespace to make sure it cancels the\nwork item that keeps the prealloca…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9","Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1","Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 59e8b7652f6cbfb62d377ead0ad553c1b4e39a7a","Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 85d5fb80fe4f0cc836b6df83f26de204fe102ff7","Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < a33975ff2b6ea47b8f29956403374b1cdd057539","Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < b83ecf80e28afb7b6595ba79932e77ca68a5a83d","Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < eec89c5f8e1adc1de4824042ef75f62aed804153","Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 47694fbc9d24ab6bf210f91e8efe06a10a478064","Linux 4.9"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-16T18:56:19.118841Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:05:44.869Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74427","references":[{"url":"https://git.kernel.org/stable/c/63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9"},{"url":"https://git.kernel.org/stable/c/f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1"},{"url":"https://git.kernel.org/stable/c/59e8b7652f6cbfb62d377ead0ad553c1b4e39a7a"},{"url":"https://git.kernel.org/stable/c/85d5fb80fe4f0cc836b6df83f26de204fe102ff7"},{"url":"https://git.kernel.org/stable/c/a33975ff2b6ea47b8f29956403374b1cdd057539"},{"url":"https://git.kernel.org/stable/c/b83ecf80e28afb7b6595ba79932e77ca68a5a83d"},{"url":"https://git.kernel.org/stable/c/eec89c5f8e1adc1de4824042ef75f62aed804153"},{"url":"https://git.kernel.org/stable/c/47694fbc9d24ab6bf210f91e8efe06a10a478064"}],"tags":["cve.org"],"epss":0.00755,"epssPercentile":0.54209,"ingestedAt":"2026-10-16T19:46:24.363Z","slug":"CVE-2026-74427","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix netns teardown to cancel the preallocation charger\n\nFix the teardown of an afs network namespace to make sure it cancels the\nwork item that keeps the preallocated rxrpc call/conn/peer queue charged\nbefore incoming calls are disabled (i.e. listen 0).\n\nAlso, if net->live is false because the afs netns is being deleted, make\nafs_charge_preallocation() skip charging and make afs_rx_new_call() avoid\nrequeuing the charger.\n\n(This was found by AI review).\n\n## Affected\n\n- `Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9`\n- `Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1`\n- `Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 59e8b7652f6cbfb62d377ead0ad553c1b4e39a7a`\n- `Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 85d5fb80fe4f0cc836b6df83f26de204fe102ff7`\n- `Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < a33975ff2b6ea47b8f29956403374b1cdd057539`\n- `Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < b83ecf80e28afb7b6595ba79932e77ca68a5a83d`\n- `Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < eec89c5f8e1adc1de4824042ef75f62aed804153`\n- `Linux >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 47694fbc9d24ab6bf210f91e8efe06a10a478064`\n- `Linux 4.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}