Unrated severityNVD Advisory· Published Feb 26, 2025· Updated May 4, 2025
netfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-49561
Description
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.
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Affected products
10- osv-coords8 versionspkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_68&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 4.12.14-122.258.1+ 7 more
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 4.12.14-122.258.1
- (no CPE)range: < 1-8.3.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/01989d7eebb61c99bd4b88ebc8e261bd2f02caedmitre
- git.kernel.org/stable/c/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0mitre
- git.kernel.org/stable/c/04f9e9104c969d8ce10a4a43634f641ed082092dmitre
- git.kernel.org/stable/c/56b14ecec97f39118bf85c9ac2438c5a949509edmitre
- git.kernel.org/stable/c/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3mitre
- git.kernel.org/stable/c/92a999d1963eed0df666284e20055136ceabd12fmitre
- git.kernel.org/stable/c/b16bb373988da3ceb0308381634117e18b6ec60dmitre
- git.kernel.org/stable/c/e97222b785e70e8973281666d709baad6523d8afmitre
News mentions
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