CVE-2026-90295

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: imx6q: fix out-of-bounds write when probed more than once imx6_soc_volt is allocated fresh on every probe, sized to the number of ARM OPPs: imx6_soc_volt = devm_kcalloc(cpu_dev, num, sizeof(*imx6_soc_volt), GFP_KERNEL); but it is filled through soc_opp_count, which has static storage and is never reset. A second bind after an unbind keeps indexing from where the first one stopped, and writes past the end of the new array. Unbinding and rebinding the driver on qemu's mcimx6ul-evk, under KASAN: BUG: KASAN: slab-out-of-bounds in imx6q_cpufreq_probe+0x3b0/0xa34 Write of size 4 at addr c5e90480 by task binder/73 imx6q_cpufreq_probe from platform_probe+0x88/0xe4 platform_probe from really_probe+0x108/0x384 bind_store from kernfs_fop_write_iter+0x1b4/0x28c The write lands one u32 past the end of the allocation. soc_opp_count is only read a few lines below the loop that fills it, so it never needed static storage. Make it a local.

Gravité et risque d'exploitation

CVE-2026-90295 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 0.21 %, ce qui la place devant 10.7 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, <55516986a3d81325c84f2d4ae9cd03116bc63599, <=6.12.*, 5.15.221, b4573d1d657aae28bedf3a9a1f5367e09c80d1d6, 0, 5.10.270, 6.1.188, 6.18.52, <49f2f9b1d0cc76cf221306fc707703205bd27073, <263a35331169390f7f9ccb51d74e668610199af4, <=5.10.*, <=6.6.*, 6.6.157, 7.2.6, <8c3afcf27fa4582c1ab912503dc8a4ebb8dc0f82, <=6.18.*, <aaa66e60c0e21d19993a95bc3718dc29eb2d3192, <b166bb79b7ef36b4f1d6d1f40d1a72b2eb0a56b9, 3.14, 6.12.110, <=7.2.*, <3.14, <55864b26c22cbd4b2e0d36154a8c35931c2e133b, <=*, <=5.15.*, <c5135bc34ea37e9d19f758e61ac44415afb3891a, 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/263a35331169390f7f9ccb51d74e668610199af4
• https://git.kernel.org/stable/c/49f2f9b1d0cc76cf221306fc707703205bd27073
• https://git.kernel.org/stable/c/c5135bc34ea37e9d19f758e61ac44415afb3891a
• https://git.kernel.org/stable/c/55864b26c22cbd4b2e0d36154a8c35931c2e133b
• https://git.kernel.org/stable/c/b166bb79b7ef36b4f1d6d1f40d1a72b2eb0a56b9
• https://git.kernel.org/stable/c/aaa66e60c0e21d19993a95bc3718dc29eb2d3192
• https://git.kernel.org/stable/c/55516986a3d81325c84f2d4ae9cd03116bc63599
• https://git.kernel.org/stable/c/8c3afcf27fa4582c1ab912503dc8a4ebb8dc0f82