CVE-2023-52925 (GCVE-0-2023-52925)

Vulnerability from cvelistv5 – Published: 2025-02-05 09:07 – Updated: 2026-05-23 15:27
VLAI
Title
netfilter: nf_tables: don't fail inserts if duplicate has expired
Summary
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.
Severity
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b15ea4017af82011dd55225ce77cce3d4dfc169c , < 891ca5dfe3b718b441fc786014a7ba8f517da188 (git)
Affected: 7c7e658a36f8b1522bd3586d8137e5f93a25ddc5 , < af78b0489e8898a8c9449ffc0fdd2e181916f0d4 (git)
Affected: 59dab3bf0b8fc08eb802721c0532f13dd89209b8 , < 59ee68c437c562170265194a99698c805a686bb3 (git)
Affected: bd156ce9553dcaf2d6ee2c825d1a5a1718e86524 , < 156369a702c33ad5434a19c3a689bfb836d4e0b8 (git)
Affected: 24138933b97b055d486e8064b4a1721702442a9b , < 7845914f45f066497ac75b30c50dbc735e84e884 (git)
Affected: 94313a196b44184b5b52c1876da6a537701b425a (git)
Affected: 1da4874d05da1526b11b82fc7f3c7ac38749ddf8 (git)
Affected: 4.19.316 , < 4.20 (semver)
Affected: 5.4.262 , < 5.5 (semver)
Create a notification for this product.
Linux Linux Affected: 6.4.11 , < 6.4.12 (semver)
Create a notification for this product.
Show details on NVD website
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