Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh (golang.org/x/crypto golang.org/x/crypto/ssh)

CVE-2026-39830
CRITICAL 9.1

En bref

Source
NVD
EPSS
EPSS 0.68 % · centile 53 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Go
Statut NVD
Modified

Description

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.

Faiblesses (CWE)

  • CWE-772 — Ressource non libérée après sa durée de vie utile
  • CWE-119 — Opération hors des limites d'un tampon mémoire

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HCISA-ADP
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat-SADP
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary)

Avis

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
golang.org/x/crypto · golang.org/x/crypto/sshaffected 0 < 0.52.0

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD