CVE-2025-23161

Description

In the Linux kernel, the following vulnerability has been resolved: PCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type The access to the PCI config space via pci_ops::read and pci_ops::write is a low-level hardware access. The functions can be accessed with disabled interrupts even on PREEMPT_RT. The pci_lock is a raw_spinlock_t for this purpose. A spinlock_t becomes a sleeping lock on PREEMPT_RT, so it cannot be acquired with disabled interrupts. The vmd_dev::cfg_lock is accessed in the same context as the pci_lock. Make vmd_dev::cfg_lock a raw_spinlock_t type so it can be used with interrupts disabled. This was reported as: BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 Call Trace: rt_spin_lock+0x4e/0x130 vmd_pci_read+0x8d/0x100 [vmd] pci_user_read_config_byte+0x6f/0xe0 pci_read_config+0xfe/0x290 sysfs_kf_bin_read+0x68/0x90 [bigeasy: reword commit message] Tested-off-by: Luis Claudio R. Goncalves <lgoncalv@redhat.com> [kwilczynski: commit log] [bhelgaas: add back report info from https://lore.kernel.org/lkml/20241218115951.83062-1-ryotkkr98@gmail.com/]

Gravité et risque d'exploitation

CVE-2025-23161 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 0.15 %, ce qui la place devant 3.8 % des CVE référencées.

Que faire ?

• Vérifiez si Linux (versions <=6.1.*, <=6.12.*, <=6.14.*, 0, 185a383ada2e7794b0e82e040223e741b24d2bf8, <5c3cfcf0b4bf43530788b08a8eaf7896ec567484, <=6.6.*, 6.12.24, <13e5148f70e81991acbe0bab5b1b50ba699116e7, 6.13.12, 6.1.135, 6.14.3, <18056a48669a040bef491e63b25896561ee14d90, <4.5, <c2968c812339593ac6e2bdd5cc3adabe3f05fa53, <20d0a9062c031068fa39f725a32f182b709b5525, 6.15, <=*, 4.5, <=5.15.*, 5.15.181, <=6.13.*, 6.6.88, <c250262d6485ca333e9821f85b07eb383ec546b1, <2358046ead696ca5c7c628d6c0e2c6792619a3e5) 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/c250262d6485ca333e9821f85b07eb383ec546b1
• https://git.kernel.org/stable/c/c2968c812339593ac6e2bdd5cc3adabe3f05fa53
• https://git.kernel.org/stable/c/13e5148f70e81991acbe0bab5b1b50ba699116e7
• https://git.kernel.org/stable/c/5c3cfcf0b4bf43530788b08a8eaf7896ec567484
• https://git.kernel.org/stable/c/2358046ead696ca5c7c628d6c0e2c6792619a3e5
• https://git.kernel.org/stable/c/20d0a9062c031068fa39f725a32f182b709b5525
• https://git.kernel.org/stable/c/18056a48669a040bef491e63b25896561ee14d90