CVE-2026-53196
Vulnérabilité moyenne dans Linux (Linux)
Description
In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_ti: fix heap overflow in get_manuf_info() get_manuf_info() reads le16_to_cpu(rom_desc->Size) bytes from the device I2C EEPROM into a buffer allocated with kmalloc_obj(), which is sizeof(struct edge_ti_manuf_descriptor) = 10 bytes. The Size field comes from the device and is only validated (in check_i2c_image()) to make sure the descriptor fits within TI_MAX_I2C_SIZE (16384 bytes), not against the destination buffer size. A malicious USB device can therefore set Size to any value up to 16377, causing a heap overflow of up to 16367 bytes when plugged into a host running this driver. valid_csum() is called after read_rom() and also iterates buffer[0..Size-1], compounding the out-of-bounds access. Fix by rejecting descriptors with unexpected length before calling read_rom(). [ johan: amend commit message; also check for short descriptors ]
Gravité et risque d'exploitation
CVE-2026-53196 obtient un score CVSS de 6.8/10, soit une gravité moyenne. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.27 %, ce qui la place devant 18.1 % des CVE référencées.
Que faire ?
- Vérifiez si Linux (versions <=6.1.*, <=7.0.*, <=6.12.*, 6.12.94, 2.6.12, <cfd634f6dfd40c49a84f9bddc2867a80e2e2623a, 0, 6.1.176, <2.6.12, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 5.15.210, <f96cf7bf9fbf15d7fcf0c91fec47ba8a010369ea, <=5.10.*, <=6.6.*, 7.0.13, 6.18.36, <d92f17af7097d10bdeddf26f66f34b354104b277, 7.1, <=6.18.*, <e168db91442b94e64fa82a7dd297983d48ea5cc0, <561edb021486e6723d841926aa4b48097da06190, <b849f30d1a9e66aae6b715aaef66e427390cb081, <=*, <=5.15.*, <d214d2341d4f9f447e36a7d012cdf6a6631a55f1, 6.6.143, <183c1076eca43bbb3e7bdf597456f91d81c73e74, 5.10.259) 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/e168db91442b94e64fa82a7dd297983d48ea5cc0
- https://git.kernel.org/stable/c/561edb021486e6723d841926aa4b48097da06190
- https://git.kernel.org/stable/c/cfd634f6dfd40c49a84f9bddc2867a80e2e2623a
- https://git.kernel.org/stable/c/d92f17af7097d10bdeddf26f66f34b354104b277
- https://git.kernel.org/stable/c/b849f30d1a9e66aae6b715aaef66e427390cb081
- https://git.kernel.org/stable/c/f96cf7bf9fbf15d7fcf0c91fec47ba8a010369ea
- https://git.kernel.org/stable/c/d214d2341d4f9f447e36a7d012cdf6a6631a55f1
- https://git.kernel.org/stable/c/183c1076eca43bbb3e7bdf597456f91d81c73e74