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CVE-2025-22005 (GCVE-0-2025-22005)

Vulnerability from cvelistv5 – Published: 2025-04-03 07:19 – Updated: 2026-09-08 08:41
VLAI
Title
ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw(). fib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything when it fails. Commit 7dd73168e273 ("ipv6: Always allocate pcpu memory in a fib6_nh") moved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init() but forgot to add cleanup for fib6_nh->nh_common.nhc_pcpu_rth_output in case it fails to allocate fib6_nh->rt6i_pcpu, resulting in memleak. Let's call fib_nh_common_release() and clear nhc_pcpu_rth_output in the error path. Note that we can remove the fib6_nh_release() call in nh_create_ipv6() later in net-next.git.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 17:09 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7dd73168e273938b9e9bb42ca51b0c27d807992b , < 16267a5036173d0173377545b4b6021b081d0933 (git)
Affected: 7dd73168e273938b9e9bb42ca51b0c27d807992b , < 1bd12dfc058e1e68759d313d7727d68dbc1b8964 (git)
Affected: 7dd73168e273938b9e9bb42ca51b0c27d807992b , < 596a883c4ce2d2e9c175f25b98fed3a1f33fea38 (git)
Affected: 7dd73168e273938b9e9bb42ca51b0c27d807992b , < 77c41cdbe6bce476e08d3251c0d501feaf10a9f3 (git)
Affected: 7dd73168e273938b9e9bb42ca51b0c27d807992b , < 119dcafe36795a15ae53351cbbd6177aaf94ffef (git)
Affected: 7dd73168e273938b9e9bb42ca51b0c27d807992b , < 29d91820184d5cbc70f3246d4911d96eaeb930d6 (git)
Affected: 7dd73168e273938b9e9bb42ca51b0c27d807992b , < d3d5b4b5ae263c3225db363ba08b937e2e2b0380 (git)
Affected: 7dd73168e273938b9e9bb42ca51b0c27d807992b , < 9740890ee20e01f99ff1dde84c63dcf089fabb98 (git)
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Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.4.292 , ≤ 5.4.* (semver)
Unaffected: 5.10.236 , ≤ 5.10.* (semver)
Unaffected: 5.15.180 , ≤ 5.15.* (semver)
Unaffected: 6.1.132 , ≤ 6.1.* (semver)
Unaffected: 6.6.85 , ≤ 6.6.* (semver)
Unaffected: 6.12.21 , ≤ 6.12.* (semver)
Unaffected: 6.13.9 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
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El commit 7dd73168e273 (\\\"ipv6: Asignar siempre memoria pcpu en un fib6_nh\\\") movi\u00f3 fib_nh_common_init() antes de alloc_percpu_gfp() dentro de fib6_nh_init(), pero olvid\u00f3 a\u00f1adir la limpieza para fib6_nh-\u0026gt;nh_common.nhc_pcpu_rth_output en caso de que no se asigne fib6_nh-\u0026gt;rt6i_pcpu, lo que resulta en una fuga de memoria. Invoquemos fib_nh_common_release() y borremos nhc_pcpu_rth_output en la ruta de error. Tenga en cuenta que podemos eliminar la llamada a fib6_nh_release() en nh_create_ipv6() m\u00e1s adelante en 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    "redhat_vex": {
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      "status": "final",
      "title": "kernel: ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-22005.json",
      "version": "3"
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      "initial_release_date": "2025-04-04T02:58:18Z",
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      "product_status:recommended": "396",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-22005",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-22005.json",
      "version": "48"
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[\"net/ipv6/route.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/16267a5036173d0173377545b4b6021b081d0933\"}, {\"url\": \"https://git.kernel.org/stable/c/1bd12dfc058e1e68759d313d7727d68dbc1b8964\"}, {\"url\": \"https://git.kernel.org/stable/c/596a883c4ce2d2e9c175f25b98fed3a1f33fea38\"}, {\"url\": \"https://git.kernel.org/stable/c/77c41cdbe6bce476e08d3251c0d501feaf10a9f3\"}, {\"url\": \"https://git.kernel.org/stable/c/119dcafe36795a15ae53351cbbd6177aaf94ffef\"}, {\"url\": \"https://git.kernel.org/stable/c/29d91820184d5cbc70f3246d4911d96eaeb930d6\"}, {\"url\": \"https://git.kernel.org/stable/c/d3d5b4b5ae263c3225db363ba08b937e2e2b0380\"}, {\"url\": \"https://git.kernel.org/stable/c/9740890ee20e01f99ff1dde84c63dcf089fabb98\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().\\n\\nfib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything\\nwhen it fails.\\n\\nCommit 7dd73168e273 (\\\"ipv6: Always allocate pcpu memory in a fib6_nh\\\")\\nmoved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init()\\nbut forgot to add cleanup for fib6_nh-\u003enh_common.nhc_pcpu_rth_output in\\ncase it fails to allocate fib6_nh-\u003ert6i_pcpu, resulting in memleak.\\n\\nLet\u0027s call fib_nh_common_release() and clear nhc_pcpu_rth_output in the\\nerror path.\\n\\nNote that we can remove the fib6_nh_release() call in nh_create_ipv6()\\nlater in net-next.git.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.292\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.236\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.180\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.132\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.85\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.21\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.9\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14\", \"versionStartIncluding\": \"5.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:10:48.403Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-22005\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-08T08:41:05.578Z\", \"dateReserved\": \"2024-12-29T08:45:45.803Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-04-03T07:19:06.716Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.