sctp: fix stream->outcnt underflow on duplicate RECONF responses (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.70 % · percentile 53 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: sctp: fix stream->outcnt underflow on duplicate RECONF responses A cached RECONF chunk may contain more than one request parameter. A duplicate response can therefore find and process the same ADD_OUT request again while another parameter is still outstanding, rolling back outcnt twice and possibly underflowing it. Track outstanding request types as bits and clear each bit after its first response. Later responses for the same request are then ignored.
References
- https://git.kernel.org/stable/c/041f7df5a929d3e7435dd8387e8ea17f2d412b7d
- https://git.kernel.org/stable/c/59f61c39cb99ee1737bd742a20094fe5653389bb
- https://git.kernel.org/stable/c/793519e343867ee9a3e84f6cac07f81f2aec7b5d
- https://git.kernel.org/stable/c/092acd3c55a4077b00489064615d8d2d898daf91
- https://git.kernel.org/stable/c/2d867663c563e8009257b9edf9c8ec75d9bbf19a
- https://git.kernel.org/stable/c/d02a5794c3deedcb8476d017fcee2b7aaedab2e1
- https://git.kernel.org/stable/c/8320cbd81bc21a1ca6ebdf70ad610ebc5ef1bd68
- https://git.kernel.org/stable/c/3faf13aff243ca9f78d08b1a2956ef5a6fc77b6e
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | Linux |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-76382
- GCVE · GCVE-0-2026-89476
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 < 041f7df5a929d3e7435dd8387e8ea17f2d412b7d ; affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 < 59f61c39cb99ee1737bd742a20094fe5653389bb ; affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 < 793519e343867ee9a3e84f6cac07f81f2aec7b5d ; affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 < 092acd3c55a4077b00489064615d8d2d898daf91 ; affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 < 2d867663c563e8009257b9edf9c8ec75d9bbf19a ; affected 11ae76e67a179f25ae8f772d62a7ddf717b1cdf3 < d02a5794c3deedcb8476d017fcee2b7aaedab2e1 |
| Linux · Linux | affected 4.12 ; unaffected 0 < 4.12 ; unaffected 5.10.270 ≤ 5.10.* ; unaffected 5.15.221 ≤ 5.15.* ; unaffected 6.1.188 ≤ 6.1.* ; unaffected 6.6.157 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |