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CVE-2025-40118

Vulnérabilité élevée dans Linux (Linux)

CVSS 7.8 · Élevée
EPSS 0.2%
Linux•Linux•Versions : <=6.1.*, <45acbf154befedd9bc135f5e031fe7855d1e6493, <83ced3c206c292458e47c7fac54223abc7141585, <5.15.195, <=6.12.*, <5.10.246, <6.6.112, 6.12.53, 6.17.3, 6.14.5, 722026c010fa75bcf9e2373aff1d7930a3d7e3cf, 6.12.26, 0, <9326a1541e1b7ed3efdbab72061b82cf01c6477a, 5.10.237, <eef5ef400893f8e3dbb09342583be0cdc716d566, bc2140c8136200b4437e1abc0fb659968cb9baab, 0f9802f174227f553959422f844eeb9ba72467fe, 6.18, <251be2f6037fb7ab399f68cd7428ff274133d693, 6.1.136, <=5.10.*, <=6.6.*, <6.12.53, <e62251954a128a2d0fcbc19e5fa39e08935bb628, <9c671d4dbfbfb0d73cfdfb706afb36d9ad60a582, <6.1.156, <=5.4.*, 30e482dfb8f27d22f518695d4bcb5e7f4c6cb08a, 5.15.195, <5.4.301, 6.6.89, f7b705c238d1483f0a766e2b20010f176e5c0fb7, a862d24e1fc3ab1b5e5f20878d2898cea346d0ec, 1d8f9378cb4800c18e20d80ecd605b2b93e87a03, 6.15, 05b512879eab41faa515b67fa3896d0005e97909, 5.10.246, <=*, 6.6.112, <=5.15.*, 6.1.156, 5.15.181, 5.4.301, <6.15, <=6.17.*, <d94be0a6ae9ade706d4270e740bdb4f79953a7fc, 5.4.293

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: pm80xx: Fix array-index-out-of-of-bounds on rmmod Since commit f7b705c238d1 ("scsi: pm80xx: Set phy_attached to zero when device is gone") UBSAN reports: UBSAN: array-index-out-of-bounds in drivers/scsi/pm8001/pm8001_sas.c:786:17 index 28 is out of range for type 'pm8001_phy [16]' on rmmod when using an expander. For a direct attached device, attached_phy contains the local phy id. For a device behind an expander, attached_phy contains the remote phy id, not the local phy id. I.e. while pm8001_ha will have pm8001_ha->chip->n_phy local phys, for a device behind an expander, attached_phy can be much larger than pm8001_ha->chip->n_phy (depending on the amount of phys of the expander). E.g. on my system pm8001_ha has 8 phys with phy ids 0-7. One of the ports has an expander connected. The expander has 31 phys with phy ids 0-30. The pm8001_ha->phy array only contains the phys of the HBA. It does not contain the phys of the expander. Thus, it is wrong to use attached_phy to index the pm8001_ha->phy array for a device behind an expander. Thus, we can only clear phy_attached for devices that are directly attached.

Gravité et risque d'exploitation

CVE-2025-40118 obtient un score CVSS de 7.8/10, soit une gravité élevée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.17 %, ce qui la place devant 5.5 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, <45acbf154befedd9bc135f5e031fe7855d1e6493, <83ced3c206c292458e47c7fac54223abc7141585, <5.15.195, <=6.12.*, <5.10.246, <6.6.112, 6.12.53, 6.17.3, 6.14.5, 722026c010fa75bcf9e2373aff1d7930a3d7e3cf, 6.12.26, 0, <9326a1541e1b7ed3efdbab72061b82cf01c6477a, 5.10.237, <eef5ef400893f8e3dbb09342583be0cdc716d566, bc2140c8136200b4437e1abc0fb659968cb9baab, 0f9802f174227f553959422f844eeb9ba72467fe, 6.18, <251be2f6037fb7ab399f68cd7428ff274133d693, 6.1.136, <=5.10.*, <=6.6.*, <6.12.53, <e62251954a128a2d0fcbc19e5fa39e08935bb628, <9c671d4dbfbfb0d73cfdfb706afb36d9ad60a582, <6.1.156, <=5.4.*, 30e482dfb8f27d22f518695d4bcb5e7f4c6cb08a, 5.15.195, <5.4.301, 6.6.89, f7b705c238d1483f0a766e2b20010f176e5c0fb7, a862d24e1fc3ab1b5e5f20878d2898cea346d0ec, 1d8f9378cb4800c18e20d80ecd605b2b93e87a03, 6.15, 05b512879eab41faa515b67fa3896d0005e97909, 5.10.246, <=*, 6.6.112, <=5.15.*, 6.1.156, 5.15.181, 5.4.301, <6.15, <=6.17.*, <d94be0a6ae9ade706d4270e740bdb4f79953a7fc, 5.4.293) 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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