{"id":"CVE-2025-23161","summary":"PCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type\n\nThe access to the PCI config space via pci_ops::read and pci_ops::write is\na low-level hardware access. The functions can be accessed with disabled\ninterrupts even on PREEMPT_RT. The pci_lock is a raw_spinlock_t for this\npurpose.\n\nA spinlock_t becomes a sleeping lock on PREEMPT_RT, so it cannot be\nacquired with disabled interrupts. The vmd_dev::cfg_lock is accessed in\nthe same context as the pci_lock.\n\nMake vmd_dev::cfg_lock a raw_spinlock_t type so it can be used with\ninterrupts disabled.\n\nThis was reported as:\n\n  BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48\n  Call Trace:\n   rt_spin_lock+0x4e/0x130\n   vmd_pci_read+0x8d/0x100 [vmd]\n   pci_user_read_config_byte+0x6f/0xe0\n   pci_read_config+0xfe/0x290\n   sysfs_kf_bin_read+0x68/0x90\n\n[bigeasy: reword commit message]\nTested-off-by: Luis Claudio R. Goncalves \u003clgoncalv@redhat.com\u003e\n[kwilczynski: commit log]\n[bhelgaas: add back report info from\nhttps://lore.kernel.org/lkml/20241218115951.83062-1-ryotkkr98@gmail.com/]","modified":"2026-04-02T12:45:23.410359Z","published":"2025-05-01T12:55:46.021Z","related":["SUSE-SU-2025:01964-1","SUSE-SU-2025:01965-1","SUSE-SU-2025:01983-1","SUSE-SU-2025:02000-1","SUSE-SU-2025:02254-1","SUSE-SU-2025:02307-1","SUSE-SU-2025:02333-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:20408-1","SUSE-SU-2025:20413-1","SUSE-SU-2025:20419-1","SUSE-SU-2025:20421-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/23xxx/CVE-2025-23161.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/13e5148f70e81991acbe0bab5b1b50ba699116e7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/18056a48669a040bef491e63b25896561ee14d90"},{"type":"WEB","url":"https://git.kernel.org/stable/c/20d0a9062c031068fa39f725a32f182b709b5525"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2358046ead696ca5c7c628d6c0e2c6792619a3e5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5c3cfcf0b4bf43530788b08a8eaf7896ec567484"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c250262d6485ca333e9821f85b07eb383ec546b1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c2968c812339593ac6e2bdd5cc3adabe3f05fa53"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/23xxx/CVE-2025-23161.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-23161"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"185a383ada2e7794b0e82e040223e741b24d2bf8"},{"fixed":"c250262d6485ca333e9821f85b07eb383ec546b1"},{"fixed":"c2968c812339593ac6e2bdd5cc3adabe3f05fa53"},{"fixed":"13e5148f70e81991acbe0bab5b1b50ba699116e7"},{"fixed":"5c3cfcf0b4bf43530788b08a8eaf7896ec567484"},{"fixed":"2358046ead696ca5c7c628d6c0e2c6792619a3e5"},{"fixed":"20d0a9062c031068fa39f725a32f182b709b5525"},{"fixed":"18056a48669a040bef491e63b25896561ee14d90"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-23161.json"}}],"schema_version":"1.7.5"}