{"id":"CVE-2025-39846","state":"PUBLISHED","title":"pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()\n\nIn __iodyn_find_io_region(), pcmcia_make_resource() is assigned to\nres and used in pci_bus_alloc_resource(). There is a dereference of res\nin pci_bus_alloc_resource(), which could lead to a NULL pointer\ndereference on failure of pcmcia_make_resource().\n\nFix this bug by adding a check of res.","publishedAt":"2025-09-19T15:26:19.932Z","updatedAt":"2026-05-12T12:07:34.761Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"49b1153adfe18a3cce7e70aa26c690f275917cd0","status":"affected","lessThan":"b990c8c6ff50649ad3352507398e443b1e3527b2","versionType":"git"},{"version":"49b1153adfe18a3cce7e70aa26c690f275917cd0","status":"affected","lessThan":"5ff2826c998370bf7f9ae26fe802140d220e3510","versionType":"git"},{"version":"49b1153adfe18a3cce7e70aa26c690f275917cd0","status":"affected","lessThan":"4bd570f494124608a0696da070f00236a96fb610","versionType":"git"},{"version":"49b1153adfe18a3cce7e70aa26c690f275917cd0","status":"affected","lessThan":"ce3b7766276894d2fbb07e2047a171f9deb965de","versionType":"git"},{"version":"49b1153adfe18a3cce7e70aa26c690f275917cd0","status":"affected","lessThan":"2ee32c4c4f636e474cd8ab7c19a68cf36072ea93","versionType":"git"},{"version":"49b1153adfe18a3cce7e70aa26c690f275917cd0","status":"affected","lessThan":"fafa7450075f41d232bc785a4ebcbf16374f2076","versionType":"git"},{"version":"49b1153adfe18a3cce7e70aa26c690f275917cd0","status":"affected","lessThan":"d7286005e8fde0a430dc180a9f46c088c7d74483","versionType":"git"},{"version":"49b1153adfe18a3cce7e70aa26c690f275917cd0","status":"affected","lessThan":"44822df89e8f3386871d9cad563ece8e2fd8f0e7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pcmcia/rsrc_iodyn.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.35","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.35","versionType":"semver"},{"version":"5.4.299","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.243","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.192","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.151","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.105","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.46","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.16.6","status":"unaffected","lessThanOrEqual":"6.16.*","versionType":"semver"},{"version":"6.17","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pcmcia/rsrc_iodyn.c"]}],"references":["https://git.kernel.org/stable/c/b990c8c6ff50649ad3352507398e443b1e3527b2","https://git.kernel.org/stable/c/5ff2826c998370bf7f9ae26fe802140d220e3510","https://git.kernel.org/stable/c/4bd570f494124608a0696da070f00236a96fb610","https://git.kernel.org/stable/c/ce3b7766276894d2fbb07e2047a171f9deb965de","https://git.kernel.org/stable/c/2ee32c4c4f636e474cd8ab7c19a68cf36072ea93","https://git.kernel.org/stable/c/fafa7450075f41d232bc785a4ebcbf16374f2076","https://git.kernel.org/stable/c/d7286005e8fde0a430dc180a9f46c088c7d74483","https://git.kernel.org/stable/c/44822df89e8f3386871d9cad563ece8e2fd8f0e7","https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html","https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html","https://cert-portal.siemens.com/productcert/html/ssa-089022.html","https://cert-portal.siemens.com/productcert/html/ssa-032379.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/39xxx/CVE-2025-39846.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-39846","state":"PUBLISHED","datePublished":"2025-09-19T15:26:19.932Z","dateUpdated":"2026-05-12T12:07:34.761Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.141Z"},"containers":{"cna":{"title":"pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()\n\nIn __iodyn_find_io_region(), pcmcia_make_resource() is assigned to\nres and used in pci_bus_alloc_resource(). 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