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CVE-2025-39806

Vulnérabilité élevée dans Linux (Linux)

CVSS 8.8 · Élevée
EPSS 0.2%
Linux•Linux•Versions : <=6.1.*, <=6.12.*, <=6.16.*, 6.6.52, d189e24a42b8bd0ece3d28801d751bf66dba8e92, 1d5c7d0a49ec9d8786f266ac6d1d7c4960e1787b, 6.17, 0, <=6.6.*, <4263e5851779f7d8ebfbc9cc7d2e9b0217adba8d, 6.16.5, 6.1.111, <d4e6e2680807671e1c73cd6a986b33659ce92f2b, <6.6.104, <c13e95587583d018cfbcc277df7e02d41902ac5a, <5.15.191, 5.15.191, 6.12.45, 6.10.11, <3055309821dd3da92888f88bad10f0324c3c89fe, 45ec9f17ce46417fc4eccecf388c99e81fb7fcc1, <6.11, 6.11, <=*, <=5.15.*, c8000deb68365b461b324d68c7ea89d730f0bb85, <7ab7311c43ae19c66c53ccd8c5052a9072a4e338, <0379eb8691b9c4477da0277ae0832036ca4410b4, 5.15.168, 7d91a0b2151a9c3b61d44c85c8eba930eddd1dd0, <6.1.150, 6.6.104, 6.1.150

Description

In the Linux kernel, the following vulnerability has been resolved: HID: multitouch: fix slab out-of-bounds access in mt_report_fixup() A malicious HID device can trigger a slab out-of-bounds during mt_report_fixup() by passing in report descriptor smaller than 607 bytes. mt_report_fixup() attempts to patch byte offset 607 of the descriptor with 0x25 by first checking if byte offset 607 is 0x15 however it lacks bounds checks to verify if the descriptor is big enough before conducting this check. Fix this bug by ensuring the descriptor size is at least 608 bytes before accessing it. Below is the KASAN splat after the out of bounds access happens: [ 13.671954] ================================================================== [ 13.672667] BUG: KASAN: slab-out-of-bounds in mt_report_fixup+0x103/0x110 [ 13.673297] Read of size 1 at addr ffff888103df39df by task kworker/0:1/10 [ 13.673297] [ 13.673297] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.15.0-00005-gec5d573d83f4-dirty #3 [ 13.673297] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/04 [ 13.673297] Call Trace: [ 13.673297] <TASK> [ 13.673297] dump_stack_lvl+0x5f/0x80 [ 13.673297] print_report+0xd1/0x660 [ 13.673297] kasan_report+0xe5/0x120 [ 13.673297] __asan_report_load1_noabort+0x18/0x20 [ 13.673297] mt_report_fixup+0x103/0x110 [ 13.673297] hid_open_report+0x1ef/0x810 [ 13.673297] mt_probe+0x422/0x960 [ 13.673297] hid_device_probe+0x2e2/0x6f0 [ 13.673297] really_probe+0x1c6/0x6b0 [ 13.673297] __driver_probe_device+0x24f/0x310 [ 13.673297] driver_probe_device+0x4e/0x220 [ 13.673297] __device_attach_driver+0x169/0x320 [ 13.673297] bus_for_each_drv+0x11d/0x1b0 [ 13.673297] __device_attach+0x1b8/0x3e0 [ 13.673297] device_initial_probe+0x12/0x20 [ 13.673297] bus_probe_device+0x13d/0x180 [ 13.673297] device_add+0xe3a/0x1670 [ 13.673297] hid_add_device+0x31d/0xa40 [...]

Gravité et risque d'exploitation

CVE-2025-39806 obtient un score CVSS de 8.8/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.24 %, ce qui la place devant 13.9 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, <=6.12.*, <=6.16.*, 6.6.52, d189e24a42b8bd0ece3d28801d751bf66dba8e92, 1d5c7d0a49ec9d8786f266ac6d1d7c4960e1787b, 6.17, 0, <=6.6.*, <4263e5851779f7d8ebfbc9cc7d2e9b0217adba8d, 6.16.5, 6.1.111, <d4e6e2680807671e1c73cd6a986b33659ce92f2b, <6.6.104, <c13e95587583d018cfbcc277df7e02d41902ac5a, <5.15.191, 5.15.191, 6.12.45, 6.10.11, <3055309821dd3da92888f88bad10f0324c3c89fe, 45ec9f17ce46417fc4eccecf388c99e81fb7fcc1, <6.11, 6.11, <=*, <=5.15.*, c8000deb68365b461b324d68c7ea89d730f0bb85, <7ab7311c43ae19c66c53ccd8c5052a9072a4e338, <0379eb8691b9c4477da0277ae0832036ca4410b4, 5.15.168, 7d91a0b2151a9c3b61d44c85c8eba930eddd1dd0, <6.1.150, 6.6.104, 6.1.150) 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

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