CVE-2023-53549
netfilter: ipset: Rework long task execution when adding/deleting entries
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Rework long task execution when adding/deleting entries When adding/deleting large number of elements in one step in ipset, it can take a reasonable amount of time and can result in soft lockup errors. The patch 5f7b51bf09ba ("netfilter: ipset: Limit the maximal range of consecutive elements to add/delete") tried to fix it by limiting the max elements to process at all. However it was not enough, it is still possible that we get hung tasks. Lowering the limit is not reasonable, so the approach in this patch is as follows: rely on the method used at resizing sets and save the state when we reach a smaller internal batch limit, unlock/lock and proceed from the saved state. Thus we can avoid long continuous tasks and at the same time removed the limit to add/delete large number of elements in one step. The nfnl mutex is held during the whole operation which prevents one to issue other ipset commands in parallel.
Timeline
ID reserved
By Linux
Published
- 13 months later
· 13 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected e62e62ea912a49f7230620f1bdc20410b943a44c – < ee756980e491c829ba0495bb420b7224a9ee26b2
- affected 5f7b51bf09baca8e4f80cbe879536842bafb5f31 – < a1e1521b463968b4eca7163f61fb6cc54d008061
- affected 5f7b51bf09baca8e4f80cbe879536842bafb5f31 – < 24a828f5a54bdeca0846526860d72b3766c5fe95
- affected 5f7b51bf09baca8e4f80cbe879536842bafb5f31 – < 8964cc36ba011dc0e1041131fa2e91fb4c2a811b
- affected 5f7b51bf09baca8e4f80cbe879536842bafb5f31 – < 5e29dc36bd5e2166b834ceb19990d9e68a734d7d
- affected e0f824abe0f412f769fb5468b36c2471430bd885
- affected 5.10.157 – < 5.10.163
- affected 5.13.14 – < 5.14
- affected 5.14
- unaffected < 5.14
- unaffected 5.10.163 – ≤ 5.10.*
- unaffected 5.15.87 – ≤ 5.15.*
- unaffected 6.0.19 – ≤ 6.0.*
- unaffected 6.1.5 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References (5)
- https://git.kernel.org/stable/c/ee756980e491c829ba0495bb420b7224a9ee26b2 (opens in a new tab)
- https://git.kernel.org/stable/c/a1e1521b463968b4eca7163f61fb6cc54d008061 (opens in a new tab)
- https://git.kernel.org/stable/c/24a828f5a54bdeca0846526860d72b3766c5fe95 (opens in a new tab)
- https://git.kernel.org/stable/c/8964cc36ba011dc0e1041131fa2e91fb4c2a811b (opens in a new tab)
- https://git.kernel.org/stable/c/5e29dc36bd5e2166b834ceb19990d9e68a734d7d (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-53549)Record last updated .