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CVE-2026-98071

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.2%
Linux•Linux•Versions : <=6.1.*, <=6.12.*, 7.2.7, 6.18.53, 0, <b7dc5da660eb5ffa7f7b4d33f2c74cb71c6edd6c, <c9a7c1eb0ad41dcf004a9e870e452cafedcd9172, <ed3ee0ac4aafda50c2f4381eb973beefeb7879ac, 5.10.271, 6.6.158, <=5.10.*, 2.6.30, <=6.6.*, 6.1.189, 00e0f34c616603ba6500f41943cbf89eb4a8a5be, <2.6.30, <=6.18.*, 5.15.222, <103c4b13c4f50322910078d1c02f29334a574122, <=7.2.*, <b767b48614c38687d717082860de7aa46f3b142c, <b8a8b6d25e7426a638c60eaba2129c0664131e84, <=*, <=5.15.*, <cb62aa8f04655a4df487913949719c0a1266ed73, <6b8d7563c28b8112e6e54abe413b028ef3f8c549, 6.12.111, 7.3

Description

In the Linux kernel, the following vulnerability has been resolved: net/rds: clear cp_flags bits individually in rds_conn_path_reset() rds_conn_path_reset() wipes the whole flag word with a plain cp->cp_flags = 0 store. Every other accessor of that word uses atomic bitops, and some of them can run concurrently with the reset: RDS_LL_SEND_FULL is set from rds_send_xmit() and cleared from the transport completion paths, neither of which holds anything that excludes the shutdown worker. A plain store racing an atomic read-modify-write on the same word is a data race, and whichever side loses has its update silently discarded. Clear the two bits the reset is actually responsible for instead. RDS_IN_XMIT and RDS_RECV_REFILL need no store at all here: they belong to the caller, rds_conn_shutdown(), which waits for both to be clear before calling the transport shutdown and this reset. This also gives every bit in cp_flags a single well-defined writer discipline, which the following patches rely on when they turn RDS_IN_XMIT and RDS_RECV_REFILL into bit locks held across the teardown: a blanket store mid-teardown would destroy lock ownership that an atomic clear preserves. Oracle UEK carries the same conversion ("net/rds: Preserve essential connection state flags"), motivated by its asynchronous shutdown state machine, whose progress and destroy flags must survive the reset. UEK's variant also clears RDS_IN_XMIT and RDS_RECV_REFILL because there the reset runs as the final step of a teardown that owns both bits, making those clears its unlock. Upstream that release belongs in rds_conn_shutdown(): once a later patch in this series turns the two bits into locks held across the teardown, ending ownership needs release semantics and a wake-up that a plain clear inside the reset would not provide. Based on Oracle UEK commit "net/rds: Preserve essential connection state flags" by Gerd Rausch.

Gravité et risque d'exploitation

CVE-2026-98071 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 0.18 %, ce qui la place devant 6.8 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, <=6.12.*, 7.2.7, 6.18.53, 0, <b7dc5da660eb5ffa7f7b4d33f2c74cb71c6edd6c, <c9a7c1eb0ad41dcf004a9e870e452cafedcd9172, <ed3ee0ac4aafda50c2f4381eb973beefeb7879ac, 5.10.271, 6.6.158, <=5.10.*, 2.6.30, <=6.6.*, 6.1.189, 00e0f34c616603ba6500f41943cbf89eb4a8a5be, <2.6.30, <=6.18.*, 5.15.222, <103c4b13c4f50322910078d1c02f29334a574122, <=7.2.*, <b767b48614c38687d717082860de7aa46f3b142c, <b8a8b6d25e7426a638c60eaba2129c0664131e84, <=*, <=5.15.*, <cb62aa8f04655a4df487913949719c0a1266ed73, <6b8d7563c28b8112e6e54abe413b028ef3f8c549, 6.12.111, 7.3) 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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