by Kastro CVE-2022-49561
Linux Linux — netfilter: conntrack: re-fetch conntrack after insertion
Description · from the CVE record
In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: re-fetch conntrack after insertion In case the conntrack is clashing, insertion can free skb->_nfct and set skb->_nfct to the already-confirmed entry. This wasn't found before because the conntrack entry and the extension space used to free'd after an rcu grace period, plus the race needs events enabled to trigger.
Affected
ProductAffectedFixed inSource
Linux71d8c47fc653711c41bc3282e5b0e605b3727956 – < e97222b785e70e8973281666d709baad6523d8afe97222b785e70e8973281666d709baad6523d8afCNA
Linux71d8c47fc653711c41bc3282e5b0e605b3727956 – < 92a999d1963eed0df666284e20055136ceabd12f92a999d1963eed0df666284e20055136ceabd12fCNA
Linux71d8c47fc653711c41bc3282e5b0e605b3727956 – < b16bb373988da3ceb0308381634117e18b6ec60db16bb373988da3ceb0308381634117e18b6ec60dCNA
Linux71d8c47fc653711c41bc3282e5b0e605b3727956 – < 91a36ec160ec1a0c8f5352b772dffcbb0b6023e391a36ec160ec1a0c8f5352b772dffcbb0b6023e3CNA
Linux71d8c47fc653711c41bc3282e5b0e605b3727956 – < 01989d7eebb61c99bd4b88ebc8e261bd2f02caed01989d7eebb61c99bd4b88ebc8e261bd2f02caedCNA
Linux71d8c47fc653711c41bc3282e5b0e605b3727956 – < 04f9e9104c969d8ce10a4a43634f641ed082092d04f9e9104c969d8ce10a4a43634f641ed082092dCNA
Linux71d8c47fc653711c41bc3282e5b0e605b3727956 – < 04e4a11dc723c52db7a36dc58f0d69ce6426f8f004e4a11dc723c52db7a36dc58f0d69ce6426f8f0CNA
Linux71d8c47fc653711c41bc3282e5b0e605b3727956 – < 56b14ecec97f39118bf85c9ac2438c5a949509ed56b14ecec97f39118bf85c9ac2438c5a949509edCNA
Linux4.74.14.282CNA
Scores by source
Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H