CVE-2025-38588 (GCVE-0-2025-38588)

Vulnerability from cvelistv5 – Published: 2025-08-19 17:03 – Updated: 2025-11-03 17:40
VLAI?
Title
ipv6: prevent infinite loop in rt6_nlmsg_size()
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent infinite loop in rt6_nlmsg_size() While testing prior patch, I was able to trigger an infinite loop in rt6_nlmsg_size() in the following place: list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, fib6_siblings) { rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); } This is because fib6_del_route() and fib6_add_rt2node() uses list_del_rcu(), which can confuse rcu readers, because they might no longer see the head of the list. Restart the loop if f6i->fib6_nsiblings is zero.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d0ec61c9f3583b76aebdbb271f5c0d3fcccd48b2 , < 6d345136c9b875f065d226908a29c25cdf9343f8 (git)
Affected: 52da02521ede55fb86546c3fffd9377b3261b91f , < e1b7932af47f92432be8303d2439d1bf77b0be23 (git)
Affected: 34a949e7a0869dfa31a40416d2a56973fae1807b , < cd8d8bbd9ced4cc5d06d858f67d4aa87745e8f38 (git)
Affected: d9ccb18f83ea2bb654289b6ecf014fd267cc988b , < 3c13db3e47e170bab19e574404e7b6be45ea873d (git)
Affected: d9ccb18f83ea2bb654289b6ecf014fd267cc988b , < 46aeb66e9e54ed0d56c18615e1c3dbd502b327ab (git)
Affected: d9ccb18f83ea2bb654289b6ecf014fd267cc988b , < 54e6fe9dd3b0e7c481c2228782c9494d653546da (git)
Affected: 11edcd026012ac18acee0f1514db3ed1b160fc6f (git)
Create a notification for this product.
    Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.1.148 , ≤ 6.1.* (semver)
Unaffected: 6.6.102 , ≤ 6.6.* (semver)
Unaffected: 6.12.42 , ≤ 6.12.* (semver)
Unaffected: 6.15.10 , ≤ 6.15.* (semver)
Unaffected: 6.16.1 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T17:40:13.723Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/ip6_fib.c",
            "net/ipv6/route.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6d345136c9b875f065d226908a29c25cdf9343f8",
              "status": "affected",
              "version": "d0ec61c9f3583b76aebdbb271f5c0d3fcccd48b2",
              "versionType": "git"
            },
            {
              "lessThan": "e1b7932af47f92432be8303d2439d1bf77b0be23",
              "status": "affected",
              "version": "52da02521ede55fb86546c3fffd9377b3261b91f",
              "versionType": "git"
            },
            {
              "lessThan": "cd8d8bbd9ced4cc5d06d858f67d4aa87745e8f38",
              "status": "affected",
              "version": "34a949e7a0869dfa31a40416d2a56973fae1807b",
              "versionType": "git"
            },
            {
              "lessThan": "3c13db3e47e170bab19e574404e7b6be45ea873d",
              "status": "affected",
              "version": "d9ccb18f83ea2bb654289b6ecf014fd267cc988b",
              "versionType": "git"
            },
            {
              "lessThan": "46aeb66e9e54ed0d56c18615e1c3dbd502b327ab",
              "status": "affected",
              "version": "d9ccb18f83ea2bb654289b6ecf014fd267cc988b",
              "versionType": "git"
            },
            {
              "lessThan": "54e6fe9dd3b0e7c481c2228782c9494d653546da",
              "status": "affected",
              "version": "d9ccb18f83ea2bb654289b6ecf014fd267cc988b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "11edcd026012ac18acee0f1514db3ed1b160fc6f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/ip6_fib.c",
            "net/ipv6/route.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.102",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.148",
                  "versionStartIncluding": "6.1.128",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.102",
                  "versionStartIncluding": "6.6.75",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.42",
                  "versionStartIncluding": "6.12.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.10",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.1",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.11.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent infinite loop in rt6_nlmsg_size()\n\nWhile testing prior patch, I was able to trigger\nan infinite loop in rt6_nlmsg_size() in the following place:\n\nlist_for_each_entry_rcu(sibling, \u0026f6i-\u003efib6_siblings,\n\t\t\tfib6_siblings) {\n\trt6_nh_nlmsg_size(sibling-\u003efib6_nh, \u0026nexthop_len);\n}\n\nThis is because fib6_del_route() and fib6_add_rt2node()\nuses list_del_rcu(), which can confuse rcu readers,\nbecause they might no longer see the head of the list.\n\nRestart the loop if f6i-\u003efib6_nsiblings is zero."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:54:20.550Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6d345136c9b875f065d226908a29c25cdf9343f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/e1b7932af47f92432be8303d2439d1bf77b0be23"
        },
        {
          "url": "https://git.kernel.org/stable/c/cd8d8bbd9ced4cc5d06d858f67d4aa87745e8f38"
        },
        {
          "url": "https://git.kernel.org/stable/c/3c13db3e47e170bab19e574404e7b6be45ea873d"
        },
        {
          "url": "https://git.kernel.org/stable/c/46aeb66e9e54ed0d56c18615e1c3dbd502b327ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/54e6fe9dd3b0e7c481c2228782c9494d653546da"
        }
      ],
      "title": "ipv6: prevent infinite loop in rt6_nlmsg_size()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38588",
    "datePublished": "2025-08-19T17:03:09.856Z",
    "dateReserved": "2025-04-16T04:51:24.026Z",
    "dateUpdated": "2025-11-03T17:40:13.723Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.