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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Adem\u00e1s, hay una extra\u00f1a asimetr\u00eda en nft_pipapo_activate: vuelve a obtener el elemento actual, mientras que las otras devoluciones de llamadas -\u0026gt;activate (mapa de bits, hash, rhash, rbtree) usan elem-\u0026gt;priv. Lo mismo para .remove: otras implementaciones de conjuntos toman elem-\u0026gt;priv, nft_pipapo_remove obtiene elem-\u0026gt;priv, luego hace una nueva b\u00fasqueda, elimina esto. Sospecho que esta fue la raz\u00f3n del cambio que provoc\u00f3 la eliminaci\u00f3n de la verificaci\u00f3n de caducidad en pipapo_get() en primer lugar, pero omitir elementos caducados all\u00ed no tiene sentido para m\u00ed, este ayudante se utiliza para solicitudes de obtenci\u00f3n normales, inserciones (verificaci\u00f3n duplicada) y devoluci\u00f3n de llamada de desactivaci\u00f3n. En los primeros dos casos, los elementos caducados deben omitirse. 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    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.2, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52925\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-06T15:12:24.648776Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-06T15:12:15.952Z\"}}], \"cna\": {\"title\": \"netfilter: nf_tables: don\u0027t fail inserts if duplicate has expired\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b15ea4017af82011dd55225ce77cce3d4dfc169c\", \"lessThan\": \"891ca5dfe3b718b441fc786014a7ba8f517da188\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7c7e658a36f8b1522bd3586d8137e5f93a25ddc5\", \"lessThan\": \"af78b0489e8898a8c9449ffc0fdd2e181916f0d4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"59dab3bf0b8fc08eb802721c0532f13dd89209b8\", \"lessThan\": \"59ee68c437c562170265194a99698c805a686bb3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bd156ce9553dcaf2d6ee2c825d1a5a1718e86524\", \"lessThan\": \"156369a702c33ad5434a19c3a689bfb836d4e0b8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"24138933b97b055d486e8064b4a1721702442a9b\", \"lessThan\": \"7845914f45f066497ac75b30c50dbc735e84e884\", \"versionType\": \"git\"}], \"programFiles\": [\"net/netfilter/nft_set_pipapo.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.4.11\", \"lessThan\": \"6.4.12\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/netfilter/nft_set_pipapo.c\"], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/891ca5dfe3b718b441fc786014a7ba8f517da188\"}, {\"url\": \"https://git.kernel.org/stable/c/af78b0489e8898a8c9449ffc0fdd2e181916f0d4\"}, {\"url\": \"https://git.kernel.org/stable/c/59ee68c437c562170265194a99698c805a686bb3\"}, {\"url\": \"https://git.kernel.org/stable/c/156369a702c33ad5434a19c3a689bfb836d4e0b8\"}, {\"url\": \"https://git.kernel.org/stable/c/7845914f45f066497ac75b30c50dbc735e84e884\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nf_tables: don\u0027t fail inserts if duplicate has expired\\n\\nnftables selftests fail:\\nrun-tests.sh testcases/sets/0044interval_overlap_0\\nExpected: 0-2 . 0-3, got:\\nW: [FAILED]     ./testcases/sets/0044interval_overlap_0: got 1\\n\\nInsertion must ignore duplicate but expired entries.\\n\\nMoreover, there is a strange asymmetry in nft_pipapo_activate:\\n\\nIt refetches the current element, whereas the other -\u003eactivate callbacks\\n(bitmap, hash, rhash, rbtree) use elem-\u003epriv.\\nSame for .remove: other set implementations take elem-\u003epriv,\\nnft_pipapo_remove fetches elem-\u003epriv, then does a relookup,\\nremove this.\\n\\nI suspect this was the reason for the change that prompted the\\nremoval of the expired check in pipapo_get() in the first place,\\nbut skipping exired elements there makes no sense to me, this helper\\nis used for normal get requests, insertions (duplicate check)\\nand deactivate callback.\\n\\nIn first two cases expired elements must be skipped.\\n\\nFor -\u003edeactivate(), this gets called for DELSETELEM, so it\\nseems to me that expired elements should be skipped as well, i.e.\\ndelete request should fail with -ENOENT error.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-02-05T09:07:56.434Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52925\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-02-06T15:12:27.810Z\", \"dateReserved\": \"2024-08-21T06:07:11.018Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-05T09:07:56.434Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.