CVE-2026-98561
Vulnérabilité non évaluée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: nfp: hold IPsec RX state under the XArray lock nfp_net_ipsec_rx() drops the XArray lock before taking a reference to the xfrm_state it found. The delete path can erase the entry and drop the last state reference in that interval. RX can then try to increment a zero refcount after the state has been queued for destruction. The driver queues firmware invalidation asynchronously; the delete path does not wait for the command to complete or drain pending RX processing. The XFRM garbage collector waits for an RCU grace period before freeing the state. That delays reclamation but does not make acquiring a reference from zero valid. Take the xfrm_state reference before releasing the XArray lock so xa_erase() cannot run between lookup and reference acquisition.
Gravité et risque d'exploitation
CVE-2026-98561 obtient un score CVSS de 0.0/10, soit une gravité non évaluée.
Que faire ?
- Vérifiez si Linux (versions 57f273adbcd44172cbe0bd10b8b7408dd255699f, <=6.12.*, 6.18.55, 0, <8468d05aa08dc430b5675beadf6f6fb8943f170b, <c1b1639fb138db52fcfbd1747e92f2454076c6d5, 6.12.112, 6.6.158, <=6.6.*, <1a983a4e14c635c40354be110cd9a1a5c94e01e6, <fe6c8ea8bfd5d1253bb0de682b1fcc2c4bb92488, <=6.18.*, <dd765023bb54f9650f8b9137906fb2c4a554dd1d, <6.2, <=7.2.*, 7.2.9, <=*, 6.2, 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
- https://git.kernel.org/stable/c/c1b1639fb138db52fcfbd1747e92f2454076c6d5
- https://git.kernel.org/stable/c/dd765023bb54f9650f8b9137906fb2c4a554dd1d
- https://git.kernel.org/stable/c/8468d05aa08dc430b5675beadf6f6fb8943f170b
- https://git.kernel.org/stable/c/fe6c8ea8bfd5d1253bb0de682b1fcc2c4bb92488
- https://git.kernel.org/stable/c/1a983a4e14c635c40354be110cd9a1a5c94e01e6