CVE-2023-53658
Vulnérabilité non évaluée dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: spi: bcm-qspi: return error if neither hif_mspi nor mspi is available If neither a "hif_mspi" nor "mspi" resource is present, the driver will just early exit in probe but still return success. Apart from not doing anything meaningful, this would then also lead to a null pointer access on removal, as platform_get_drvdata() would return NULL, which it would then try to dereference when trying to unregister the spi master. Fix this by unconditionally calling devm_ioremap_resource(), as it can handle a NULL res and will then return a viable ERR_PTR() if we get one. The "return 0;" was previously a "goto qspi_resource_err;" where then ret was returned, but since ret was still initialized to 0 at this place this was a valid conversion in 63c5395bb7a9 ("spi: bcm-qspi: Fix use-after-free on unbind"). The issue was not introduced by this commit, only made more obvious.
Gravité et risque d'exploitation
CVE-2023-53658 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 0.15 %, ce qui la place devant 3.9 % des CVE référencées.
Que faire ?
- Vérifiez si Linux (versions <=6.1.*, 5.4.251, 0, <7c1f23ad34fcdace50275a6aa1e1969b41c6233f, fa236a7ef24048bafaeed13f68df35a819794758, 5.15.121, 6.5, <32b9c8f7892c19f7f5c9fed5fb410b9fd5990bb6, <=4.14.*, 4.14.322, <=5.10.*, <a91c34357afcfaa5307e254f22a8452550a07b34, <=5.4.*, <4.9, <=4.19.*, <22ae32d80ef590d12a2364e4621f90f7c58445c7, <d20db3c58a7f9361e370a7850ceb60dbdf62eea3, <d3dcdb43c872a3b967345144151a2c9bb9124c9b, <217b6ea8cf7b819477bca597a6ae2d43d38ba283, <398e6a015877d44327f754aeb48ff3354945c78c, 6.4.4, <=*, 4.9, <=5.15.*, 4.19.291, 5.10.188, <=6.4.*, 6.1.39) 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/a91c34357afcfaa5307e254f22a8452550a07b34
- https://git.kernel.org/stable/c/d20db3c58a7f9361e370a7850ceb60dbdf62eea3
- https://git.kernel.org/stable/c/398e6a015877d44327f754aeb48ff3354945c78c
- https://git.kernel.org/stable/c/32b9c8f7892c19f7f5c9fed5fb410b9fd5990bb6
- https://git.kernel.org/stable/c/217b6ea8cf7b819477bca597a6ae2d43d38ba283
- https://git.kernel.org/stable/c/d3dcdb43c872a3b967345144151a2c9bb9124c9b
- https://git.kernel.org/stable/c/22ae32d80ef590d12a2364e4621f90f7c58445c7
- https://git.kernel.org/stable/c/7c1f23ad34fcdace50275a6aa1e1969b41c6233f