CVE-2026-63860 (GCVE-0-2026-63860)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:04 – Updated: 2026-07-20 13:40
VLAI
Title
RDMA/core: Prefer NLA_NUL_STRING
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLA_NUL_STRING These attributes are evaluated as c-string (passed to strcmp), but NLA_STRING doesn't check for the presence of a \0 terminator. Either this needs to switch to nla_strcmp() and needs to adjust printf fmt specifier to not use plain %s, or this needs to use NLA_NUL_STRING. As the code has been this way for long time, it seems to me that userspace does include the terminating nul, even tough its not enforced so far, and thus NLA_NUL_STRING use is the simpler solution.
Severity
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 30dc5e63d6a5ad24894b5512d10b228d73645a44 , < fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf (git)
Affected: 30dc5e63d6a5ad24894b5512d10b228d73645a44 , < 87111356d58d86edb221ba144d261ed83a5b8bbe (git)
Affected: 30dc5e63d6a5ad24894b5512d10b228d73645a44 , < abda65bdd13084c771842adaac1f652d0660dd82 (git)
Affected: 30dc5e63d6a5ad24894b5512d10b228d73645a44 , < 137b5918931d4d05aa8ea8d3adf67f7224eef63c (git)
Affected: 30dc5e63d6a5ad24894b5512d10b228d73645a44 , < 5877c043398d5fa0e93919a3d837e5cd7a98a961 (git)
Affected: 30dc5e63d6a5ad24894b5512d10b228d73645a44 , < f2c7b39dde2e61df8157066969cc2a408cd3dcd9 (git)
Affected: 30dc5e63d6a5ad24894b5512d10b228d73645a44 , < c26a0052cceed4c4d380ee5808b699f937fb58d8 (git)
Affected: 30dc5e63d6a5ad24894b5512d10b228d73645a44 , < 6ed3d14fc45d3da6025e7fe4a6a09066856698e2 (git)
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Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.141 , ≤ 6.6.* (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
      "current_release_date": "2026-07-21T19:04:04+00:00",
      "cve": "CVE-2026-63860",
      "id": "CVE-2026-63860",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/core: Prefer NLA_NUL_STRING",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63860.json",
      "version": "3"
    }
  }
}



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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.