{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53480","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-01T11:39:39.402Z","datePublished":"2025-10-01T11:42:48.919Z","dateUpdated":"2026-05-11T19:45:48.153Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:45:48.153Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nkobject: Add sanity check for kset->kobj.ktype in kset_register()\n\nWhen I register a kset in the following way:\n\tstatic struct kset my_kset;\n\tkobject_set_name(&my_kset.kobj, \"my_kset\");\n        ret = kset_register(&my_kset);\n\nA null pointer dereference exception is occurred:\n[ 4453.568337] Unable to handle kernel NULL pointer dereference at \\\nvirtual address 0000000000000028\n... ...\n[ 4453.810361] Call trace:\n[ 4453.813062]  kobject_get_ownership+0xc/0x34\n[ 4453.817493]  kobject_add_internal+0x98/0x274\n[ 4453.822005]  kset_register+0x5c/0xb4\n[ 4453.825820]  my_kobj_init+0x44/0x1000 [my_kset]\n... ...\n\nBecause I didn't initialize my_kset.kobj.ktype.\n\nAccording to the description in Documentation/core-api/kobject.rst:\n - A ktype is the type of object that embeds a kobject.  Every structure\n   that embeds a kobject needs a corresponding ktype.\n\nSo add sanity check to make sure kset->kobj.ktype is not NULL."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["lib/kobject.c"],"versions":[{"version":"5f81880d5204ee2388fd9a75bb850ccd526885b7","lessThan":"039ec9db2d30032eafa365f5f89b30eca5322b05","status":"affected","versionType":"git"},{"version":"5f81880d5204ee2388fd9a75bb850ccd526885b7","lessThan":"964e025ceefdf75da46b0133d0c2790de451aeec","status":"affected","versionType":"git"},{"version":"5f81880d5204ee2388fd9a75bb850ccd526885b7","lessThan":"5df5829158513134ddcaf2184d9286eda7b0bb18","status":"affected","versionType":"git"},{"version":"5f81880d5204ee2388fd9a75bb850ccd526885b7","lessThan":"f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef","status":"affected","versionType":"git"},{"version":"5f81880d5204ee2388fd9a75bb850ccd526885b7","lessThan":"48aebbe801e78a8932404c122ed0e880ccedc220","status":"affected","versionType":"git"},{"version":"5f81880d5204ee2388fd9a75bb850ccd526885b7","lessThan":"1a772881bc059c596d8ca587cbd2a233edce3d3b","status":"affected","versionType":"git"},{"version":"5f81880d5204ee2388fd9a75bb850ccd526885b7","lessThan":"4d0fe8c52bb3029d83e323c961221156ab98680b","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["lib/kobject.c"],"versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"4.19.295","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.257","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.197","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.133","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.55","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.5.5","lessThanOrEqual":"6.5.*","status":"unaffected","versionType":"semver"},{"version":"6.6","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"4.19.295"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.4.257"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.10.197"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.133"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.5.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/039ec9db2d30032eafa365f5f89b30eca5322b05"},{"url":"https://git.kernel.org/stable/c/964e025ceefdf75da46b0133d0c2790de451aeec"},{"url":"https://git.kernel.org/stable/c/5df5829158513134ddcaf2184d9286eda7b0bb18"},{"url":"https://git.kernel.org/stable/c/f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef"},{"url":"https://git.kernel.org/stable/c/48aebbe801e78a8932404c122ed0e880ccedc220"},{"url":"https://git.kernel.org/stable/c/1a772881bc059c596d8ca587cbd2a233edce3d3b"},{"url":"https://git.kernel.org/stable/c/4d0fe8c52bb3029d83e323c961221156ab98680b"}],"title":"kobject: Add sanity check for kset->kobj.ktype in kset_register()","x_generator":{"engine":"bippy-1.2.0"}}}}