CVE-2023-52925
netfilter: nf_tables: don't fail inserts if duplicate has expired
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: don't fail inserts if duplicate has expired nftables selftests fail: run-tests.sh testcases/sets/0044interval_overlap_0 Expected: 0-2 . 0-3, got: W: [FAILED] ./testcases/sets/0044interval_overlap_0: got 1 Insertion must ignore duplicate but expired entries. Moreover, there is a strange asymmetry in nft_pipapo_activate: It refetches the current element, whereas the other ->activate callbacks (bitmap, hash, rhash, rbtree) use elem->priv. Same for .remove: other set implementations take elem->priv, nft_pipapo_remove fetches elem->priv, then does a relookup, remove this. I suspect this was the reason for the change that prompted the removal of the expired check in pipapo_get() in the first place, but skipping exired elements there makes no sense to me, this helper is used for normal get requests, insertions (duplicate check) and deactivate callback. In first two cases expired elements must be skipped. For ->deactivate(), this gets called for DELSETELEM, so it seems to me that expired elements should be skipped as well, i.e. delete request should fail with -ENOENT error.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 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)
- 0.21% · top 89% of all CVEs (6 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 6.2.
Affected products
- affected b15ea4017af82011dd55225ce77cce3d4dfc169c – < 891ca5dfe3b718b441fc786014a7ba8f517da188
- affected 7c7e658a36f8b1522bd3586d8137e5f93a25ddc5 – < af78b0489e8898a8c9449ffc0fdd2e181916f0d4
- affected 59dab3bf0b8fc08eb802721c0532f13dd89209b8 – < 59ee68c437c562170265194a99698c805a686bb3
- affected bd156ce9553dcaf2d6ee2c825d1a5a1718e86524 – < 156369a702c33ad5434a19c3a689bfb836d4e0b8
- affected 24138933b97b055d486e8064b4a1721702442a9b – < 7845914f45f066497ac75b30c50dbc735e84e884
- affected 94313a196b44184b5b52c1876da6a537701b425a
- affected 1da4874d05da1526b11b82fc7f3c7ac38749ddf8
- affected 4.19.316 – < 4.20
- affected 5.4.262 – < 5.5
- affected 6.4.11 – < 6.4.12
References (5)
- https://git.kernel.org/stable/c/891ca5dfe3b718b441fc786014a7ba8f517da188 (opens in a new tab)
- https://git.kernel.org/stable/c/af78b0489e8898a8c9449ffc0fdd2e181916f0d4 (opens in a new tab)
- https://git.kernel.org/stable/c/59ee68c437c562170265194a99698c805a686bb3 (opens in a new tab)
- https://git.kernel.org/stable/c/156369a702c33ad5434a19c3a689bfb836d4e0b8 (opens in a new tab)
- https://git.kernel.org/stable/c/7845914f45f066497ac75b30c50dbc735e84e884 (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)
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[](https://trackcve.app/cve/CVE-2023-52925)Record last updated .