CVE - CVE-2025-23161

CVE-ID
CVE-2025-23161	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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/]
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/13e5148f70e81991acbe0bab5b1b50ba699116e7 URL:https://git.kernel.org/stable/c/13e5148f70e81991acbe0bab5b1b50ba699116e7 MISC:https://git.kernel.org/stable/c/18056a48669a040bef491e63b25896561ee14d90 URL:https://git.kernel.org/stable/c/18056a48669a040bef491e63b25896561ee14d90 MISC:https://git.kernel.org/stable/c/20d0a9062c031068fa39f725a32f182b709b5525 URL:https://git.kernel.org/stable/c/20d0a9062c031068fa39f725a32f182b709b5525 MISC:https://git.kernel.org/stable/c/2358046ead696ca5c7c628d6c0e2c6792619a3e5 URL:https://git.kernel.org/stable/c/2358046ead696ca5c7c628d6c0e2c6792619a3e5 MISC:https://git.kernel.org/stable/c/5c3cfcf0b4bf43530788b08a8eaf7896ec567484 URL:https://git.kernel.org/stable/c/5c3cfcf0b4bf43530788b08a8eaf7896ec567484 MISC:https://git.kernel.org/stable/c/c250262d6485ca333e9821f85b07eb383ec546b1 URL:https://git.kernel.org/stable/c/c250262d6485ca333e9821f85b07eb383ec546b1 MISC:https://git.kernel.org/stable/c/c2968c812339593ac6e2bdd5cc3adabe3f05fa53 URL:https://git.kernel.org/stable/c/c2968c812339593ac6e2bdd5cc3adabe3f05fa53
Assigning CNA
kernel.org
Date Record Created
20250111	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250111)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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