{"id":"CVE-2023-53250","state":"PUBLISHED","title":"firmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle\n\nKASAN reported a null-ptr-deref error:\n\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nCPU: 0 PID: 1373 Comm: modprobe\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\nRIP: 0010:dmi_sysfs_entry_release\n...\nCall Trace:\n <TASK>\n kobject_put\n dmi_sysfs_register_handle (drivers/firmware/dmi-sysfs.c:540) dmi_sysfs\n dmi_decode_table (drivers/firmware/dmi_scan.c:133)\n dmi_walk (drivers/firmware/dmi_scan.c:1115)\n dmi_sysfs_init (drivers/firmware/dmi-sysfs.c:149) dmi_sysfs\n do_one_initcall (init/main.c:1296)\n ...\nKernel panic - not syncing: Fatal exception\nKernel Offset: 0x4000000 from 0xffffffff81000000\n---[ end Kernel panic - not syncing: Fatal exception ]---\n\nIt is because previous patch added kobject_put() to release the memory\nwhich will call  dmi_sysfs_entry_release() and list_del().\n\nHowever, list_add_tail(entry->list) is called after the error block,\nso the list_head is uninitialized and cannot be deleted.\n\nMove error handling to after list_add_tail to fix this.","publishedAt":"2025-09-15T14:46:20.011Z","updatedAt":"2026-05-23T15:28:24.206Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fdffa4ad8f6bf1ece877edfb807f2b2c729d8578","status":"affected","lessThan":"b4fe158259fb5fead52ff2b55841ec5c39492604","versionType":"git"},{"version":"660ba678f9998aca6db74f2dd912fa5124f0fa31","status":"affected","lessThan":"e851996b32264e78a10863c2ac41a8689d7b9252","versionType":"git"},{"version":"660ba678f9998aca6db74f2dd912fa5124f0fa31","status":"affected","lessThan":"5d0492d1d934642bdfd2057acc1b56f4b57be465","versionType":"git"},{"version":"660ba678f9998aca6db74f2dd912fa5124f0fa31","status":"affected","lessThan":"18e126e97c961f7a93823795c879d7c085fe5098","versionType":"git"},{"version":"a9bfb37d6ba7c376b0d53337a4c5f5ff324bd725","status":"affected","versionType":"git"},{"version":"ed38d04342dfbe9e5aca745c8b5eb4188a74f0ef","status":"affected","versionType":"git"},{"version":"c66cc3c62870a27ea8f060a7e4c1ad8d26dd3f0d","status":"affected","versionType":"git"},{"version":"a724634b2a49f6ff0177a9e19a5a92fc1545e1b7","status":"affected","versionType":"git"},{"version":"985706bd3bbeffc8737bc05965ca8d24837bc7db","status":"affected","versionType":"git"},{"version":"3ba359ebe914ac3f8c6c832b28007c14c39d3766","status":"affected","versionType":"git"},{"version":"ec752973aa721ee281d5441e497364637c626c7b","status":"affected","versionType":"git"},{"version":"5.15.47","status":"affected","lessThan":"5.15.99","versionType":"semver"},{"version":"4.9.318","status":"affected","lessThan":"4.10","versionType":"semver"},{"version":"4.14.283","status":"affected","lessThan":"4.15","versionType":"semver"},{"version":"4.19.247","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.198","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.122","status":"affected","lessThan":"5.11","versionType":"semver"},{"version":"5.17.15","status":"affected","lessThan":"5.18","versionType":"semver"},{"version":"5.18.4","status":"affected","lessThan":"5.19","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/dmi-sysfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"5.15.99","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.16","status":"unaffected","lessThanOrEqual":"6.1.*","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/firmware/dmi-sysfs.c"]}],"references":["https://git.kernel.org/stable/c/b4fe158259fb5fead52ff2b55841ec5c39492604","https://git.kernel.org/stable/c/e851996b32264e78a10863c2ac41a8689d7b9252","https://git.kernel.org/stable/c/5d0492d1d934642bdfd2057acc1b56f4b57be465","https://git.kernel.org/stable/c/18e126e97c961f7a93823795c879d7c085fe5098"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53250.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53250","state":"PUBLISHED","datePublished":"2025-09-15T14:46:20.011Z","dateUpdated":"2026-05-23T15:28:24.206Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-15T14:19:21.849Z"},"containers":{"cna":{"title":"firmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle\n\nKASAN reported a null-ptr-deref error:\n\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nCPU: 0 PID: 1373 Comm: modprobe\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\nRIP: 0010:dmi_sysfs_entry_release\n...\nCall Trace:\n <TASK>\n kobject_put\n dmi_sysfs_register_handle (drivers/firmware/dmi-sysfs.c:540) dmi_sysfs\n dmi_decode_table (drivers/firmware/dmi_scan.c:133)\n dmi_walk (drivers/firmware/dmi_scan.c:1115)\n dmi_sysfs_init (drivers/firmware/dmi-sysfs.c:149) dmi_sysfs\n do_one_initcall (init/main.c:1296)\n ...\nKernel panic - not syncing: Fatal exception\nKernel Offset: 0x4000000 from 0xffffffff81000000\n---[ end Kernel panic - not syncing: Fatal exception ]---\n\nIt is because previous patch added kobject_put() to release the memory\nwhich will call  dmi_sysfs_entry_release() and list_del().\n\nHowever, list_add_tail(entry->list) is called after the error block,\nso the list_head is uninitialized and cannot be deleted.\n\nMove error handling to after list_add_tail to fix this."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fdffa4ad8f6bf1ece877edfb807f2b2c729d8578","status":"affected","lessThan":"b4fe158259fb5fead52ff2b55841ec5c39492604","versionType":"git"},{"version":"660ba678f9998aca6db74f2dd912fa5124f0fa31","status":"affected","lessThan":"e851996b32264e78a10863c2ac41a8689d7b9252","versionType":"git"},{"version":"660ba678f9998aca6db74f2dd912fa5124f0fa31","status":"affected","lessThan":"5d0492d1d934642bdfd2057acc1b56f4b57be465","versionType":"git"},{"version":"660ba678f9998aca6db74f2dd912fa5124f0fa31","status":"affected","lessThan":"18e126e97c961f7a93823795c879d7c085fe5098","versionType":"git"},{"version":"a9bfb37d6ba7c376b0d53337a4c5f5ff324bd725","status":"affected","versionType":"git"},{"version":"ed38d04342dfbe9e5aca745c8b5eb4188a74f0ef","status":"affected","versionType":"git"},{"version":"c66cc3c62870a27ea8f060a7e4c1ad8d26dd3f0d","status":"affected","versionType":"git"},{"version":"a724634b2a49f6ff0177a9e19a5a92fc1545e1b7","status":"affected","versionType":"git"},{"version":"985706bd3bbeffc8737bc05965ca8d24837bc7db","status":"affected","versionType":"git"},{"version":"3ba359ebe914ac3f8c6c832b28007c14c39d3766","status":"affected","versionType":"git"},{"version":"ec752973aa721ee281d5441e497364637c626c7b","status":"affected","versionType":"git"},{"version":"5.15.47","status":"affected","lessThan":"5.15.99","versionType":"semver"},{"version":"4.9.318","status":"affected","lessThan":"4.10","versionType":"semver"},{"version":"4.14.283","status":"affected","lessThan":"4.15","versionType":"semver"},{"version":"4.19.247","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.198","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.122","status":"affected","lessThan":"5.11","versionType":"semver"},{"version":"5.17.15","status":"affected","lessThan":"5.18","versionType":"semver"},{"version":"5.18.4","status":"affected","lessThan":"5.19","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/dmi-sysfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"5.15.99","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.16","status":"unaffected","lessThanOrEqual":"6.1.*","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/firmware/dmi-sysfs.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b4fe158259fb5fead52ff2b55841ec5c39492604"},{"url":"https://git.kernel.org/stable/c/e851996b32264e78a10863c2ac41a8689d7b9252"},{"url":"https://git.kernel.org/stable/c/5d0492d1d934642bdfd2057acc1b56f4b57be465"},{"url":"https://git.kernel.org/stable/c/18e126e97c961f7a93823795c879d7c085fe5098"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:28:24.206Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.47","versionEndExcluding":"5.15.99"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.2.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.318"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.283"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.247"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18.4"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2023-53250","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T18:00:07.342780Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T18:02:51.964Z"}}]}}}