CVE-2023-53304

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Source
https://cve.org/CVERecord?id=CVE-2023-53304
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53304.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-53304
Downstream
Related
Published
2025-09-16T16:11:44.147Z
Modified
2026-03-20T12:33:05.078980Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
netfilter: nft_set_rbtree: fix overlap expiration walk
Details

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nftsetrbtree: fix overlap expiration walk

The lazy gc on insert that should remove timed-out entries fails to release the other half of the interval, if any.

Can be reproduced with tests/shell/testcases/sets/0044intervaloverlap0 in nftables.git and kmemleak enabled kernel.

Second bug is the use of rbeprev vs. prev pointer. If rbeprev() returns NULL after at least one iteration, rbe_prev points to element that is not an end interval, hence it should not be removed.

Lastly, check the genmask of the end interval if this is active in the current generation.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53304.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
7ab87a326f20c52ff4d9972052d085be951c704b
Fixed
8284a79136c384059e85e278da2210b809730287
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
181859bdfb9734aca449512fccaee4cacce64aed
Fixed
acaee227cf79c45a5d2d49c3e9a66333a462802c
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4aacf3d78424293e318c616016865380b37b9cc5
Fixed
893cb3c3513cf661a0ff45fe0cfa83fe27131f76
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
2bf1435fa19d2c58054391b3bba40d5510a5758c
Fixed
50cbb9d195c197af671869c8cadce3bd483735a0
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
318cb24a4c3fce8140afaf84e4d45fcb76fb280b
Fixed
89a4d1a89751a0fbd520e64091873e19cc0979e8
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
c9e6978e2725a7d4b6cd23b2facd3f11422c0643
Fixed
cd66733932399475fe933cb3ec03e687ed401462
Fixed
f718863aca469a109895cb855e6b81fff4827d71

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53304.json"