CVE-2022-49561
netfilter: conntrack: re-fetch conntrack after insertion
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.7
References 8
git.kernel.org
- stable/c/e97222b785e70e8973281666d709baad6523d8af
- stable/c/92a999d1963eed0df666284e20055136ceabd12f
- stable/c/b16bb373988da3ceb0308381634117e18b6ec60d
- stable/c/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3
- stable/c/01989d7eebb61c99bd4b88ebc8e261bd2f02caed
- stable/c/04f9e9104c969d8ce10a4a43634f641ed082092d
- stable/c/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0
- stable/c/56b14ecec97f39118bf85c9ac2438c5a949509ed