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CVE-2026-64174

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.1%
Linux•Linux•Versions : <=6.1.*, <=7.0.*, <=6.12.*, 5.2, 0, <c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8, <cedbb608494ba1e7a5c6c56b7f1d3fd470094f28, <5817e1e5205498a5df66eba2b34e817f4210fd0f, <6cfae4914439878b8acb35c7e3b40096eeb2ad9c, <7666dbb1bacc4ba522b96740cba7283d243d16e1, 5.15.209, 6.12.92, 6.6.142, <=5.10.*, <=6.6.*, 6.1.175, <67915715fd3874057457363c87c63e18829527df, fe806e4992c9047affd263bcc13b2c047029a726, 6.18.34, 7.1, <=6.18.*, 7.0.11, 5.10.258, <1ced0f5a851f9cae274545a42a06c459b7fd8881, <=*, <=5.15.*, <1343a480f84b80c1249133a90ef87f8751d65cbb, <5.2

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: advance loop vars in cfg80211_merge_profile() cfg80211_merge_profile() reassembles a Multi-BSSID non-transmitted BSS profile that has been split across multiple consecutive MBSSID elements. Its while-loop calls cfg80211_get_profile_continuation(ie, ielen, mbssid_elem, sub_elem) but never advances mbssid_elem or sub_elem inside the body. Each iteration therefore searches for a continuation that follows the same fixed pair; the helper returns the same next_mbssid; and the same next_sub bytes are memcpy()'d into merged_ie at a growing offset until the buffer fills. Advance both mbssid_elem and sub_elem to the just-consumed continuation so the next call to cfg80211_get_profile_continuation() searches for a further continuation beyond it (or returns NULL when none exists). A specially-crafted malicious beacon can take advantage of this bug to cause the kernel to spend an excessive amount of time in cfg80211_merge_profile (up to as much as 2ms per beacon received), which could theoretically be abused in some way.

Gravité et risque d'exploitation

CVE-2026-64174 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.12 %, ce qui la place devant 1.7 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, <=7.0.*, <=6.12.*, 5.2, 0, <c0bc4c8bd556cbe036a5b9ed333c0aab9aadfcb8, <cedbb608494ba1e7a5c6c56b7f1d3fd470094f28, <5817e1e5205498a5df66eba2b34e817f4210fd0f, <6cfae4914439878b8acb35c7e3b40096eeb2ad9c, <7666dbb1bacc4ba522b96740cba7283d243d16e1, 5.15.209, 6.12.92, 6.6.142, <=5.10.*, <=6.6.*, 6.1.175, <67915715fd3874057457363c87c63e18829527df, fe806e4992c9047affd263bcc13b2c047029a726, 6.18.34, 7.1, <=6.18.*, 7.0.11, 5.10.258, <1ced0f5a851f9cae274545a42a06c459b7fd8881, <=*, <=5.15.*, <1343a480f84b80c1249133a90ef87f8751d65cbb, <5.2) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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