CVE-2026-52917 (GCVE-0-2026-52917)

Vulnerability from cvelistv5 – Published: 2026-06-24 07:14 – Updated: 2026-06-28 06:36
VLAI
Title
sctp: diag: reject stale associations in dump_one path
Summary
In the Linux kernel, the following vulnerability has been resolved: sctp: diag: reject stale associations in dump_one path The SCTP exact sock_diag lookup can hold a transport reference, block on lock_sock(sk), and then resume after sctp_association_free() has marked the association dead and freed its bind address list. When that happens, inet_assoc_attr_size() and inet_diag_msg_sctpasoc_fill() can still dereference association state that is no longer valid for reporting. In particular, inet_diag_msg_sctpasoc_fill() may read an empty bind-address list as a real sctp_sockaddr_entry and trigger an out-of-bounds read from unrelated association memory. Reject the association after taking the socket lock if it has been reaped or detached from the endpoint, and report the lookup as stale. This keeps the exact dump-one path from formatting torn association state.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 6657af827e21883ae90693e42e7f59a6aab690b5 (git)
Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < b2be72d401833194917e44fbd8d8144bb4f2db16 (git)
Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 5425de8bd6e9fe5bd67d158e3348171ae7510117 (git)
Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < e97c2a535e23ed0fdd2660993fb3f10d9535c9bc (git)
Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 480f754580b5686b928977d16a59f20cef83ff01 (git)
Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 78c4f964b2f94e405721c093773f6250e1e676b2 (git)
Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < f5af203dec6e0e7a6090fcc2130e9f3901bfc84d (git)
Affected: 8f840e47f190cbe61a96945c13e9551048d42cef , < 5eba3e48d78edd7551b992cb7ba687019b3a78da (git)
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Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 5.10.259 , ≤ 5.10.* (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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    "datePublished": "2026-06-24T07:14:13.886Z",
    "dateReserved": "2026-06-09T07:44:35.367Z",
    "dateUpdated": "2026-06-28T06:36:34.757Z",
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  }
}


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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.