{"id":"CVE-2022-49821","state":"PUBLISHED","title":"mISDN: fix possible memory leak in mISDN_dsp_element_register()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmISDN: fix possible memory leak in mISDN_dsp_element_register()\n\nAfer commit 1fa5ae857bb1 (\"driver core: get rid of struct device's\nbus_id string array\"), the name of device is allocated dynamically,\nuse put_device() to give up the reference, so that the name can be\nfreed in kobject_cleanup() when the refcount is 0.\n\nThe 'entry' is going to be freed in mISDN_dsp_dev_release(), so the\nkfree() is removed. list_del() is called in mISDN_dsp_dev_release(),\nso it need be initialized.","publishedAt":"2025-05-01T14:09:42.901Z","updatedAt":"2026-05-11T19:07:25.318Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"bbd53d05c4c892080ef3b617eff4f57903acecb9","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"b119bedbefb7dd9ed8bf8cb9f1056504250d610e","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"727ed7d28348c026c7ef4d852f3d0e5054d376e8","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"0f2c681900a01e3f23789bca26d88268c3d5b51d","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"083a2c9ef82e184bdf0b9f9a1e5fc38d32afbb47","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"7a05e3929668c8cfef495c69752a9e91fac4878f","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"d4b8394725079670be309f9a35ad88a8cbbaaefd","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"98a2ac1ca8fd6eca6867726fe238d06e75eb1acd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/isdn/mISDN/dsp_pipeline.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"4.9.334","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.300","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.267","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.225","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.156","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.80","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.10","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/isdn/mISDN/dsp_pipeline.c"]}],"references":["https://git.kernel.org/stable/c/bbd53d05c4c892080ef3b617eff4f57903acecb9","https://git.kernel.org/stable/c/b119bedbefb7dd9ed8bf8cb9f1056504250d610e","https://git.kernel.org/stable/c/727ed7d28348c026c7ef4d852f3d0e5054d376e8","https://git.kernel.org/stable/c/0f2c681900a01e3f23789bca26d88268c3d5b51d","https://git.kernel.org/stable/c/083a2c9ef82e184bdf0b9f9a1e5fc38d32afbb47","https://git.kernel.org/stable/c/7a05e3929668c8cfef495c69752a9e91fac4878f","https://git.kernel.org/stable/c/d4b8394725079670be309f9a35ad88a8cbbaaefd","https://git.kernel.org/stable/c/98a2ac1ca8fd6eca6867726fe238d06e75eb1acd"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49821.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49821","state":"PUBLISHED","datePublished":"2025-05-01T14:09:42.901Z","dateUpdated":"2026-05-11T19:07:25.318Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-05-01T14:05:17.227Z"},"containers":{"cna":{"title":"mISDN: fix possible memory leak in mISDN_dsp_element_register()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmISDN: fix possible memory leak in mISDN_dsp_element_register()\n\nAfer commit 1fa5ae857bb1 (\"driver core: get rid of struct device's\nbus_id string array\"), the name of device is allocated dynamically,\nuse put_device() to give up the reference, so that the name can be\nfreed in kobject_cleanup() when the refcount is 0.\n\nThe 'entry' is going to be freed in mISDN_dsp_dev_release(), so the\nkfree() is removed. list_del() is called in mISDN_dsp_dev_release(),\nso it need be initialized."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"bbd53d05c4c892080ef3b617eff4f57903acecb9","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"b119bedbefb7dd9ed8bf8cb9f1056504250d610e","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"727ed7d28348c026c7ef4d852f3d0e5054d376e8","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"0f2c681900a01e3f23789bca26d88268c3d5b51d","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"083a2c9ef82e184bdf0b9f9a1e5fc38d32afbb47","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"7a05e3929668c8cfef495c69752a9e91fac4878f","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"d4b8394725079670be309f9a35ad88a8cbbaaefd","versionType":"git"},{"version":"1fa5ae857bb14f6046205171d98506d8112dd74e","status":"affected","lessThan":"98a2ac1ca8fd6eca6867726fe238d06e75eb1acd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/isdn/mISDN/dsp_pipeline.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.30","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.30","versionType":"semver"},{"version":"4.9.334","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.300","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.267","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.225","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.156","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.80","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.10","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/isdn/mISDN/dsp_pipeline.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/bbd53d05c4c892080ef3b617eff4f57903acecb9"},{"url":"https://git.kernel.org/stable/c/b119bedbefb7dd9ed8bf8cb9f1056504250d610e"},{"url":"https://git.kernel.org/stable/c/727ed7d28348c026c7ef4d852f3d0e5054d376e8"},{"url":"https://git.kernel.org/stable/c/0f2c681900a01e3f23789bca26d88268c3d5b51d"},{"url":"https://git.kernel.org/stable/c/083a2c9ef82e184bdf0b9f9a1e5fc38d32afbb47"},{"url":"https://git.kernel.org/stable/c/7a05e3929668c8cfef495c69752a9e91fac4878f"},{"url":"https://git.kernel.org/stable/c/d4b8394725079670be309f9a35ad88a8cbbaaefd"},{"url":"https://git.kernel.org/stable/c/98a2ac1ca8fd6eca6867726fe238d06e75eb1acd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:07:25.318Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.9.334"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.14.300"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"4.19.267"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.4.225"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.10.156"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.15.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}