{"id":"CVE-2023-54174","state":"PUBLISHED","title":"vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio: Fix NULL pointer dereference caused by uninitialized group->iommufd\n\ngroup->iommufd is not initialized for the iommufd_ctx_put()\n\n[20018.331541] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[20018.377508] RIP: 0010:iommufd_ctx_put+0x5/0x10 [iommufd]\n...\n[20018.476483] Call Trace:\n[20018.479214]  <TASK>\n[20018.481555]  vfio_group_fops_unl_ioctl+0x506/0x690 [vfio]\n[20018.487586]  __x64_sys_ioctl+0x6a/0xb0\n[20018.491773]  ? trace_hardirqs_on+0xc5/0xe0\n[20018.496347]  do_syscall_64+0x67/0x90\n[20018.500340]  entry_SYSCALL_64_after_hwframe+0x4b/0xb5","publishedAt":"2025-12-30T12:08:47.527Z","updatedAt":"2026-05-11T19:56:52.938Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9eefba8002c27d65ab52a533fd0611b099b73591","status":"affected","lessThan":"8f24eef598ce7cce0bbefe0ec642bcc031d0f528","versionType":"git"},{"version":"9eefba8002c27d65ab52a533fd0611b099b73591","status":"affected","lessThan":"d649c34cb916b015fdcb487e51409fcc5caeca8d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vfio/group.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.2.3","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vfio/group.c"]}],"references":["https://git.kernel.org/stable/c/8f24eef598ce7cce0bbefe0ec642bcc031d0f528","https://git.kernel.org/stable/c/d649c34cb916b015fdcb487e51409fcc5caeca8d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/54xxx/CVE-2023-54174.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54174","state":"PUBLISHED","datePublished":"2025-12-30T12:08:47.527Z","dateUpdated":"2026-05-11T19:56:52.938Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-30T12:06:44.496Z"},"containers":{"cna":{"title":"vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio: Fix NULL pointer dereference caused by uninitialized group->iommufd\n\ngroup->iommufd is not initialized for the iommufd_ctx_put()\n\n[20018.331541] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[20018.377508] RIP: 0010:iommufd_ctx_put+0x5/0x10 [iommufd]\n...\n[20018.476483] Call Trace:\n[20018.479214]  <TASK>\n[20018.481555]  vfio_group_fops_unl_ioctl+0x506/0x690 [vfio]\n[20018.487586]  __x64_sys_ioctl+0x6a/0xb0\n[20018.491773]  ? trace_hardirqs_on+0xc5/0xe0\n[20018.496347]  do_syscall_64+0x67/0x90\n[20018.500340]  entry_SYSCALL_64_after_hwframe+0x4b/0xb5"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"9eefba8002c27d65ab52a533fd0611b099b73591","status":"affected","lessThan":"8f24eef598ce7cce0bbefe0ec642bcc031d0f528","versionType":"git"},{"version":"9eefba8002c27d65ab52a533fd0611b099b73591","status":"affected","lessThan":"d649c34cb916b015fdcb487e51409fcc5caeca8d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vfio/group.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.2.3","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/vfio/group.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8f24eef598ce7cce0bbefe0ec642bcc031d0f528"},{"url":"https://git.kernel.org/stable/c/d649c34cb916b015fdcb487e51409fcc5caeca8d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:56:52.938Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.2.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}