CVE-2022-50369

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A simple call graph is shown as below:\n\n vkms_init()\n vkms_create()\n devm_drm_dev_alloc()\n __devm_drm_dev_alloc()\n devm_drm_dev_init()\n devm_add_action_or_reset()\n devm_add_action() # an error happened\n devm_drm_dev_init_release()\n drm_dev_put()\n kref_put()\n drm_dev_release()\n vkms_release()\n destroy_workqueue() # null-ptr-deref happened\n vkms_modeset_init()\n vkms_output_init()\n vkms_crtc_init() # where the workqueue get allocated\n\nFix this by checking if composer_workq is NULL before passing it to\nthe destroy_workqueue() in vkms_release()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/vkms/vkms_drv.c"], "versions": [{"version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "lessThan": "0b8f390e2251191f1b179cc87f65d54c96565f0d", "status": "affected", "versionType": "git"}, {"version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "lessThan": "1f9836f95271e7acf016667eee0aeae3386f9645", "status": "affected", "versionType": "git"}, {"version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "lessThan": "596f1ba3987e601e31a5abf1f75ce1d2635aceac", "status": "affected", "versionType": "git"}, {"version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "lessThan": "57031c474c3a920ea73afeb5dc352e537f5793ee", "status": "affected", "versionType": "git"}, {"version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "lessThan": "2fe2a8f40c21161ffe7653cc234e7934db5b7cc5", "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/gpu/drm/vkms/vkms_drv.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.173", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.99", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.16", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.3", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "4.20", "versionEndExcluding": "5.10.173"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.15.99"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.1.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.2.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0b8f390e2251191f1b179cc87f65d54c96565f0d"}, {"url": "https://git.kernel.org/stable/c/1f9836f95271e7acf016667eee0aeae3386f9645"}, {"url": "https://git.kernel.org/stable/c/596f1ba3987e601e31a5abf1f75ce1d2635aceac"}, {"url": "https://git.kernel.org/stable/c/57031c474c3a920ea73afeb5dc352e537f5793ee"}, {"url": "https://git.kernel.org/stable/c/2fe2a8f40c21161ffe7653cc234e7934db5b7cc5"}], "title": "drm/vkms: Fix null-ptr-deref in vkms_release()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"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-2022-50369", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-14T18:35:42.545980Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:42:59.660Z"}}]}}

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A simple call graph is shown as below:\n\n vkms_init()\n vkms_create()\n devm_drm_dev_alloc()\n __devm_drm_dev_alloc()\n devm_drm_dev_init()\n devm_add_action_or_reset()\n devm_add_action() # an error happened\n devm_drm_dev_init_release()\n drm_dev_put()\n kref_put()\n drm_dev_release()\n vkms_release()\n destroy_workqueue() # null-ptr-deref happened\n vkms_modeset_init()\n vkms_output_init()\n vkms_crtc_init() # where the workqueue get allocated\n\nFix this by checking if composer_workq is NULL before passing it to\nthe destroy_workqueue() in vkms_release()."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.173", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.99", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.16", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.2.3", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.3", "versionStartIncluding": "4.20"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:18:13.484Z"}}}, "cveMetadata": {"cveId": "CVE-2022-50369", "state": "PUBLISHED", "dateUpdated": "2026-05-11T19:18:13.484Z", "dateReserved": "2025-09-17T14:53:06.995Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-09-17T14:56:24.889Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/vkms/vkms_drv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0b8f390e2251191f1b179cc87f65d54c96565f0d", "status": "affected", "version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "versionType": "git"}, {"lessThan": "1f9836f95271e7acf016667eee0aeae3386f9645", "status": "affected", "version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "versionType": "git"}, {"lessThan": "596f1ba3987e601e31a5abf1f75ce1d2635aceac", "status": "affected", "version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "versionType": "git"}, {"lessThan": "57031c474c3a920ea73afeb5dc352e537f5793ee", "status": "affected", "version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "versionType": "git"}, {"lessThan": "2fe2a8f40c21161ffe7653cc234e7934db5b7cc5", "status": "affected", "version": "6c234fe37c57627a5baf96f552afa1fae2b67d4d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/vkms/vkms_drv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.20"}, {"lessThan": "4.20", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.173", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.99", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.16", "versionType": "semver"}, {"lessThanOrEqual": "6.2.*", "status": "unaffected", "version": "6.2.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8B27B61E-5B49-4410-A066-3A0BC0EFF68C", "versionEndExcluding": "5.10.173", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5B8B2AC9-2F31-4A0F-96F5-7E26B50B27BB", "versionEndExcluding": "5.15.99", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0FD95FDA-6525-4B13-B3FB-49D9995FD8ED", "versionEndExcluding": "6.1.16", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "88C67289-22AD-4CA9-B202-5F5A80E5BA4B", "versionEndExcluding": "6.2.3", "versionStartIncluding": "6.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vkms: Fix null-ptr-deref in vkms_release()\n\nA null-ptr-deref is triggered when it tries to destroy the workqueue in\nvkms->output.composer_workq in vkms_release().\n\n KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]\n CPU: 5 PID: 17193 Comm: modprobe Not tainted 6.0.0-11331-gd465bff130bf #24\n RIP: 0010:destroy_workqueue+0x2f/0x710\n ...\n Call Trace:\n <TASK>\n ? vkms_config_debugfs_init+0x50/0x50 [vkms]\n __devm_drm_dev_alloc+0x15a/0x1c0 [drm]\n vkms_init+0x245/0x1000 [vkms]\n do_one_initcall+0xd0/0x4f0\n do_init_module+0x1a4/0x680\n load_module+0x6249/0x7110\n __do_sys_finit_module+0x140/0x200\n do_syscall_64+0x35/0x80\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe reason is that an OOM happened which triggers the destroy of the\nworkqueue, however, the workqueue is alloced in the later process,\nthus a null-ptr-deref happened. A simple call graph is shown as below:\n\n vkms_init()\n vkms_create()\n devm_drm_dev_alloc()\n __devm_drm_dev_alloc()\n devm_drm_dev_init()\n devm_add_action_or_reset()\n devm_add_action() # an error happened\n devm_drm_dev_init_release()\n drm_dev_put()\n kref_put()\n drm_dev_release()\n vkms_release()\n destroy_workqueue() # null-ptr-deref happened\n vkms_modeset_init()\n vkms_output_init()\n vkms_crtc_init() # where the workqueue get allocated\n\nFix this by checking if composer_workq is NULL before passing it to\nthe destroy_workqueue() in vkms_release()."}], "id": "CVE-2022-50369", "lastModified": "2026-06-17T05:23:21.190", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-50369", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-14T18:35:42.545980Z", "version": "2.0.3"}}]}, "published": "2025-09-17T15:15:35.830", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0b8f390e2251191f1b179cc87f65d54c96565f0d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1f9836f95271e7acf016667eee0aeae3386f9645"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2fe2a8f40c21161ffe7653cc234e7934db5b7cc5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/57031c474c3a920ea73afeb5dc352e537f5793ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/596f1ba3987e601e31a5abf1f75ce1d2635aceac"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: drm/vkms: Fix null-ptr-deref in vkms_release()", "id": "2396112", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2396112"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2022-50369", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50369\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50369\nhttps://lore.kernel.org/linux-cve-announce/2025091716-CVE-2022-50369-bc92@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-18T11:59:05.906200+00:00", "updated": "2025-09-18T11:59:05.906251+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}