{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49821", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-01T14:05:17.227Z", "datePublished": "2025-05-01T14:09:42.901Z", "dateUpdated": "2025-05-04T08:46:03.507Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:46:03.507Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/isdn/mISDN/dsp_pipeline.c"], "versions": [{"version": "1fa5ae857bb14f6046205171d98506d8112dd74e", "lessThan": "bbd53d05c4c892080ef3b617eff4f57903acecb9", "status": "affected", "versionType": "git"}, {"version": "1fa5ae857bb14f6046205171d98506d8112dd74e", "lessThan": "b119bedbefb7dd9ed8bf8cb9f1056504250d610e", "status": "affected", "versionType": "git"}, {"version": "1fa5ae857bb14f6046205171d98506d8112dd74e", "lessThan": "727ed7d28348c026c7ef4d852f3d0e5054d376e8", "status": "affected", "versionType": "git"}, {"version": "1fa5ae857bb14f6046205171d98506d8112dd74e", "lessThan": "0f2c681900a01e3f23789bca26d88268c3d5b51d", "status": "affected", "versionType": "git"}, {"version": "1fa5ae857bb14f6046205171d98506d8112dd74e", "lessThan": "083a2c9ef82e184bdf0b9f9a1e5fc38d32afbb47", "status": "affected", "versionType": "git"}, {"version": "1fa5ae857bb14f6046205171d98506d8112dd74e", "lessThan": "7a05e3929668c8cfef495c69752a9e91fac4878f", "status": "affected", "versionType": "git"}, {"version": "1fa5ae857bb14f6046205171d98506d8112dd74e", "lessThan": "d4b8394725079670be309f9a35ad88a8cbbaaefd", "status": "affected", "versionType": "git"}, {"version": "1fa5ae857bb14f6046205171d98506d8112dd74e", "lessThan": "98a2ac1ca8fd6eca6867726fe238d06e75eb1acd", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/isdn/mISDN/dsp_pipeline.c"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.334", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.300", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.267", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.225", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.156", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.80", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.10", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1", "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": "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"}]}]}], "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"}], "title": "mISDN: fix possible memory leak in mISDN_dsp_element_register()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "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."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mISDN: corrige posible p\u00e9rdida de memoria en mISDN_dsp_element_register() Despu\u00e9s de la confirmaci\u00f3n 1fa5ae857bb1 (\"n\u00facleo del controlador: deshacerse de la matriz de cadenas bus_id del dispositivo struct\"), el nombre del dispositivo se asigna din\u00e1micamente, use put_device() para renunciar a la referencia, de modo que el nombre se pueda liberar en kobject_cleanup() cuando refcount sea 0. La 'entrada' se liberar\u00e1 en mISDN_dsp_dev_release(), por lo que se elimina kfree(). list_del() se llama en mISDN_dsp_dev_release(), por lo que necesita inicializarse."}], "id": "CVE-2022-49821", "lastModified": "2025-05-02T13:53:20.943", "metrics": {}, "published": "2025-05-01T15:16:05.513", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/083a2c9ef82e184bdf0b9f9a1e5fc38d32afbb47"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0f2c681900a01e3f23789bca26d88268c3d5b51d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/727ed7d28348c026c7ef4d852f3d0e5054d376e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7a05e3929668c8cfef495c69752a9e91fac4878f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/98a2ac1ca8fd6eca6867726fe238d06e75eb1acd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b119bedbefb7dd9ed8bf8cb9f1056504250d610e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bbd53d05c4c892080ef3b617eff4f57903acecb9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4b8394725079670be309f9a35ad88a8cbbaaefd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: mISDN: fix possible memory leak in mISDN_dsp_element_register()", "id": "2363394", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363394"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmISDN: fix possible memory leak in mISDN_dsp_element_register()\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.\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."], "name": "CVE-2022-49821", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49821\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49821\nhttps://lore.kernel.org/linux-cve-announce/2025050133-CVE-2022-49821-9223@gregkh/T"], "statement": "This issue in mISDN_dsp_element_register() results in a memory leak if device registration fails, due to improper reference handling. It can only be triggered by a privileged user (CAP_SYS_ADMIN or kernel-space component), since registering new DSP elements in the mISDN subsystem requires access to kernel interfaces unavailable to unprivileged users.", "threat_severity": "Moderate"}