{"id":"CVE-2025-23161","state":"PUBLISHED","title":"PCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type","description":"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 <lgoncalv@redhat.com>\n[kwilczynski: commit log]\n[bhelgaas: add back report info from\nhttps://lore.kernel.org/lkml/20241218115951.83062-1-ryotkkr98@gmail.com/]","publishedAt":"2025-05-01T12:55:46.021Z","updatedAt":"2026-05-11T21:14:09.062Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"c250262d6485ca333e9821f85b07eb383ec546b1","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"c2968c812339593ac6e2bdd5cc3adabe3f05fa53","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"13e5148f70e81991acbe0bab5b1b50ba699116e7","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"5c3cfcf0b4bf43530788b08a8eaf7896ec567484","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"2358046ead696ca5c7c628d6c0e2c6792619a3e5","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"20d0a9062c031068fa39f725a32f182b709b5525","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"18056a48669a040bef491e63b25896561ee14d90","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/vmd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.5","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.135","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.88","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.24","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.12","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14.3","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/vmd.c"]}],"references":["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","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/23xxx/CVE-2025-23161.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-23161","state":"PUBLISHED","datePublished":"2025-05-01T12:55:46.021Z","dateUpdated":"2026-05-11T21:14:09.062Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-01-11T14:28:41.515Z"},"containers":{"cna":{"title":"PCI: vmd: Make vmd_dev::cfg_lock a raw_spinlock_t type","descriptions":[{"lang":"en","value":"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 <lgoncalv@redhat.com>\n[kwilczynski: commit log]\n[bhelgaas: add back report info from\nhttps://lore.kernel.org/lkml/20241218115951.83062-1-ryotkkr98@gmail.com/]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"c250262d6485ca333e9821f85b07eb383ec546b1","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"c2968c812339593ac6e2bdd5cc3adabe3f05fa53","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"13e5148f70e81991acbe0bab5b1b50ba699116e7","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"5c3cfcf0b4bf43530788b08a8eaf7896ec567484","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"2358046ead696ca5c7c628d6c0e2c6792619a3e5","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"20d0a9062c031068fa39f725a32f182b709b5525","versionType":"git"},{"version":"185a383ada2e7794b0e82e040223e741b24d2bf8","status":"affected","lessThan":"18056a48669a040bef491e63b25896561ee14d90","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/vmd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.5","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.135","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.88","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.24","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.12","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14.3","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/vmd.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c250262d6485ca333e9821f85b07eb383ec546b1"},{"url":"https://git.kernel.org/stable/c/c2968c812339593ac6e2bdd5cc3adabe3f05fa53"},{"url":"https://git.kernel.org/stable/c/13e5148f70e81991acbe0bab5b1b50ba699116e7"},{"url":"https://git.kernel.org/stable/c/5c3cfcf0b4bf43530788b08a8eaf7896ec567484"},{"url":"https://git.kernel.org/stable/c/2358046ead696ca5c7c628d6c0e2c6792619a3e5"},{"url":"https://git.kernel.org/stable/c/20d0a9062c031068fa39f725a32f182b709b5525"},{"url":"https://git.kernel.org/stable/c/18056a48669a040bef491e63b25896561ee14d90"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:14:09.062Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"5.15.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.1.135"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.6.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.12.24"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.13.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.14.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.15"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T19:43:01.027Z"}}]}}}