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

Vulnerability from cvelistv5 – Published: 2025-08-19 17:03 – Updated: 2026-05-23 16:00
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
Affected: 6.1.128 , < 6.1.148 (semver)
Affected: 6.6.75 , < 6.6.102 (semver)
Affected: 6.12.2 , < 6.12.42 (semver)
Affected: 6.11.11 , < 6.12 (semver)
guessed 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)
guessed Create a notification for this product.
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    "redhat_vex": {
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      "current_release_date": "2026-06-30T01:10:55+00:00",
      "cve": "CVE-2025-38588",
      "id": "CVE-2025-38588",
      "initial_release_date": "2025-08-19T00:00:00+00:00",
      "product_status:known_affected": "198",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ipv6: prevent infinite loop in rt6_nlmsg_size()",
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      "id": "CVE-2025-38588",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38588",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38588.json",
      "version": "60"
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}



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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.