CVE-2026-72396

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: adm1275: Prevent reading uninitialized stack While adding support for the ROHM BD127X0 hot-swap controllers, sashiko reported an error in device-name comparison, which can lead to reading uninitialized stack memory. Quoting Sashiko: This is a pre-existing issue, but I noticed that just before this block in adm1275_probe(), there might be an out-of-bounds stack read: ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); if (ret < 0) { ... } for (mid = adm1275_id; mid->name[0]; mid++) { if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) break; } Since i2c_smbus_read_block_data() reads up to 32 bytes into the uninitialized stack array block_buffer without appending a null terminator, strncasecmp() could read past the valid bytes returned in ret. For example, if the device returns a shorter string like "adm12", checking it against "adm1275" up to the length of "adm1275" will continue reading into uninitialized stack bounds. Prevent reading uninitialized memory by zeroing the stack array.

Gravité et risque d'exploitation

CVE-2026-72396 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 0.22 %, ce qui la place devant 11.7 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, 7.1.5, 6.18.40, <=6.12.*, <57d583f069fa9d3d0c0831e34b967d1f61edae94, 87102808d03948c825c3bdc48316e48f6422fd7e, 0, <aa35cee30686e6be3c890bf741429c5025d55abe, <c9e04a52663bc6651c06c2427df088b751062bd6, <=7.1.*, <39a581bd64a0e91112ec8017a2dd4e70c1336e99, <3.3, 6.1.178, <=5.10.*, <=6.6.*, 6.12.97, <82e4ab03a6ab9b87667410f5143bc484d7a62bdc, <93b96e723bdcba6172a5814262be875abcc5d269, <=6.18.*, 3.3, 5.15.212, 6.6.145, 5.10.261, <553f9517813912a5ab661af5504485d96824a61c, <=*, <=5.15.*, <36554592e2f5cac16ff8bf73720d38a6d9ef4a20, 7.2) 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

• https://git.kernel.org/stable/c/57d583f069fa9d3d0c0831e34b967d1f61edae94
• https://git.kernel.org/stable/c/82e4ab03a6ab9b87667410f5143bc484d7a62bdc
• https://git.kernel.org/stable/c/c9e04a52663bc6651c06c2427df088b751062bd6
• https://git.kernel.org/stable/c/39a581bd64a0e91112ec8017a2dd4e70c1336e99
• https://git.kernel.org/stable/c/aa35cee30686e6be3c890bf741429c5025d55abe
• https://git.kernel.org/stable/c/36554592e2f5cac16ff8bf73720d38a6d9ef4a20
• https://git.kernel.org/stable/c/93b96e723bdcba6172a5814262be875abcc5d269
• https://git.kernel.org/stable/c/553f9517813912a5ab661af5504485d96824a61c