Vulnerability-Lookup

FKIE_CVE-2022-48999

Vulnerability from fkie_nvd - Published: 2024-10-21 20:15 - Updated: 2026-08-04 10:17

Severity

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference Gwangun Jung reported a slab-out-of-bounds access in fib_nh_match: fib_nh_match+0xf98/0x1130 linux-6.0-rc7/net/ipv4/fib_semantics.c:961 fib_table_delete+0x5f3/0xa40 linux-6.0-rc7/net/ipv4/fib_trie.c:1753 inet_rtm_delroute+0x2b3/0x380 linux-6.0-rc7/net/ipv4/fib_frontend.c:874 Separate nexthop objects are mutually exclusive with the legacy multipath spec. Fix fib_nh_match to return if the config for the to be deleted route contains a multipath spec while the fib_info is using a nexthop object.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0b5394229ebae09afc07aabccb5ffd705ffd250e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/25174d91e4a32a24204060d283bd5fa6d0ddf133	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/61b91eb33a69c3be11b259c5ea484505cd79f883	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bb20a2ae241be846bc3c11ea4b3a3c69e41d51f2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cc3cd130ecfb8b0ae52e235e487bae3f16a24a32	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/fib_semantics.c",
            "tools/testing/selftests/net/fib_nexthops.sh"
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          ]
        },
        {
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          "programFiles": [
            "net/ipv4/fib_semantics.c",
            "tools/testing/selftests/net/fib_nexthops.sh"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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            },
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              "version": "5.4.226",
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              "version": "5.10.158",
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            },
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              "status": "unaffected",
              "version": "5.15.82",
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            },
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              "status": "unaffected",
              "version": "6.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
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      "nodes": [
        {
          "cpeMatch": [
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: Handle attempt to delete multipath route when fib_info contains an nh reference\n\nGwangun Jung reported a slab-out-of-bounds access in fib_nh_match:\n    fib_nh_match+0xf98/0x1130 linux-6.0-rc7/net/ipv4/fib_semantics.c:961\n    fib_table_delete+0x5f3/0xa40 linux-6.0-rc7/net/ipv4/fib_trie.c:1753\n    inet_rtm_delroute+0x2b3/0x380 linux-6.0-rc7/net/ipv4/fib_frontend.c:874\n\nSeparate nexthop objects are mutually exclusive with the legacy\nmultipath spec. Fix fib_nh_match to return if the config for the\nto be deleted route contains a multipath spec while the fib_info\nis using a nexthop object."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv4: Controlar el intento de eliminar una ruta multipath cuando fib_info contiene una referencia nh Gwangun Jung inform\u00f3 un acceso fuera de los l\u00edmites en fib_nh_match: fib_nh_match+0xf98/0x1130 linux-6.0-rc7/net/ipv4/fib_semantics.c:961 fib_table_delete+0x5f3/0xa40 linux-6.0-rc7/net/ipv4/fib_trie.c:1753 inet_rtm_delroute+0x2b3/0x380 linux-6.0-rc7/net/ipv4/fib_frontend.c:874 Los objetos de siguiente salto separados son mutuamente excluyentes con la especificaci\u00f3n multipath heredada. Arreglar fib_nh_match para que regrese si la configuraci\u00f3n de la ruta que se va a eliminar contiene una especificaci\u00f3n de rutas m\u00faltiples mientras fib_info usa un objeto nexthop."
    }
  ],
  "id": "CVE-2022-48999",
  "lastModified": "2026-08-04T10:17:30.410",
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  "vulnStatus": "Modified",
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          "value": "CWE-125"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}

CVE-2022-48999 (GCVE-0-2022-48999)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-08-05 08:53

Title

ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference

Summary

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-22 13:15 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7067 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/cc3cd130ecfb8b0ae…
https://git.kernel.org/stable/c/0b5394229ebae09af…
https://git.kernel.org/stable/c/25174d91e4a32a242…
https://git.kernel.org/stable/c/bb20a2ae241be846b…
https://git.kernel.org/stable/c/61b91eb33a69c3be1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 493ced1ac47c48bb86d9d4e8e87df8592be85a0e , < cc3cd130ecfb8b0ae52e235e487bae3f16a24a32 (git) Affected: 493ced1ac47c48bb86d9d4e8e87df8592be85a0e , < 0b5394229ebae09afc07aabccb5ffd705ffd250e (git) Affected: 493ced1ac47c48bb86d9d4e8e87df8592be85a0e , < 25174d91e4a32a24204060d283bd5fa6d0ddf133 (git) Affected: 493ced1ac47c48bb86d9d4e8e87df8592be85a0e , < bb20a2ae241be846bc3c11ea4b3a3c69e41d51f2 (git) Affected: 493ced1ac47c48bb86d9d4e8e87df8592be85a0e , < 61b91eb33a69c3be11b259c5ea484505cd79f883 (git)
Linux	Linux	Affected: 5.3 Unaffected: 0 , < 5.3 (semver) Unaffected: 5.4.226 , ≤ 5.4.* (semver) Unaffected: 5.10.158 , ≤ 5.10.* (semver) Unaffected: 5.15.82 , ≤ 5.15.* (semver) Unaffected: 6.0.12 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-48999",
                "options": [
                  {
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                  },
                  {
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:15:25.948167Z",
                "version": "2.0.3"
              },
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        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:18:40.948Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
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          "product": "Linux",
          "programFiles": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: Handle attempt to delete multipath route when fib_info contains an nh reference\n\nGwangun Jung reported a slab-out-of-bounds access in fib_nh_match:\n    fib_nh_match+0xf98/0x1130 linux-6.0-rc7/net/ipv4/fib_semantics.c:961\n    fib_table_delete+0x5f3/0xa40 linux-6.0-rc7/net/ipv4/fib_trie.c:1753\n    inet_rtm_delroute+0x2b3/0x380 linux-6.0-rc7/net/ipv4/fib_frontend.c:874\n\nSeparate nexthop objects are mutually exclusive with the legacy\nmultipath spec. Fix fib_nh_match to return if the config for the\nto be deleted route contains a multipath spec while the fib_info\nis using a nexthop object."
        }
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              "value": "AV:L - Triggered via RTM_DELROUTE over rtnetlink (inet_rtm_delroute \u2192 fib_table_delete \u2192 fib_nh_match), which requires a local process with a netlink socket, not remote packet processing.\nAC:L - An attacker can reliably create a nexthop-object route and then delete it with a legacy multipath nexthop spec; no races or attacker-uncontrollable conditions are required.\nPR:L - RTM_DELROUTE/RTM_NEWNEXTHOP require CAP_NET_ADMIN, but that capability is available to an unprivileged user inside a user+network namespace (netlink_net_capable checks the netns user_ns).\nUI:N - Exploitation needs no victim action; the attacker sets up the nexthop route and issues the delete themselves.\nS:U - Impact is confined to the local kernel networking stack authority; this is not a VM/IOMMU/sandbox boundary cross.\nC:H - The bug is a slab out-of-bounds read of struct fib_nh fields past a zero-length fib_nh[] allocation; with a multipath nexthop group, fib_info_num_path() expands the OOB window across adjacent slab memory.\nI:N - The vulnerable path only reads and compares OOB memory for route matching; there is no out-of-bounds write or memory-corruption write primitive.\nA:H - The slab OOB access can oops/panic the kernel when it hits unmapped or poisoned memory, matching the reported KASAN slab-out-of-bounds crash."
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      "providerMetadata": {
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        },
        {
          "url": "https://git.kernel.org/stable/c/0b5394229ebae09afc07aabccb5ffd705ffd250e"
        },
        {
          "url": "https://git.kernel.org/stable/c/25174d91e4a32a24204060d283bd5fa6d0ddf133"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb20a2ae241be846bc3c11ea4b3a3c69e41d51f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/61b91eb33a69c3be11b259c5ea484505cd79f883"
        }
      ],
      "title": "ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48999",
    "datePublished": "2024-10-21T20:06:14.118Z",
    "dateReserved": "2024-08-22T01:27:53.642Z",
    "dateUpdated": "2026-08-05T08:53:22.725Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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