CVE-2023-52925 (GCVE-0-2023-52925)
Vulnerability from cvelistv5
Published
2025-02-05 09:07
Modified
2025-05-04 12:49
Severity ?
6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: b15ea4017af82011dd55225ce77cce3d4dfc169c
Version: 7c7e658a36f8b1522bd3586d8137e5f93a25ddc5
Version: 59dab3bf0b8fc08eb802721c0532f13dd89209b8
Version: bd156ce9553dcaf2d6ee2c825d1a5a1718e86524
Version: 24138933b97b055d486e8064b4a1721702442a9b
Version: 94313a196b44184b5b52c1876da6a537701b425a
Version: 1da4874d05da1526b11b82fc7f3c7ac38749ddf8
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