{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-49921", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T12:17:06.035Z", "datePublished": "2024-10-21T18:01:47.112Z", "dateUpdated": "2026-05-11T20:41:51.451Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:41:51.451Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check null pointers before used\n\n[WHAT & HOW]\nPoniters, such as dc->clk_mgr, are null checked previously in the same\nfunction, so Coverity warns \"implies that \"dc->clk_mgr\" might be null\".\nAs a result, these pointers need to be checked when used again.\n\nThis fixes 10 FORWARD_NULL issues reported by Coverity."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/display/dc/clk_mgr/dce110/dce110_clk_mgr.c", "drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c", "drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c", "drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c", "drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c", "drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c", "drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c", "drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c"], "versions": [{"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c", "lessThan": "5b35bf1a82eb29841b67ff5643ba83762250fc24", "status": "affected", "versionType": "git"}, {"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c", "lessThan": "be1fb44389ca3038ad2430dac4234669bc177ee3", "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/amd/display/dc/clk_mgr/dce110/dce110_clk_mgr.c", "drivers/gpu/drm/amd/display/dc/hubp/dcn10/dcn10_hubp.c", "drivers/gpu/drm/amd/display/dc/hubp/dcn20/dcn20_hubp.c", "drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c", "drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c", "drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c", "drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c", "drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c"], "versions": [{"version": "4.15", "status": "affected"}, {"version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.3", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "4.15", "versionEndExcluding": "6.11.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5b35bf1a82eb29841b67ff5643ba83762250fc24"}, {"url": "https://git.kernel.org/stable/c/be1fb44389ca3038ad2430dac4234669bc177ee3"}], "title": "drm/amd/display: Check null pointers before used", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-49921", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-10-22T13:40:21.671812Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:48:44.609Z"}}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D5FF9C2-A011-4A64-B614-F9244ED2EA0D", "versionEndExcluding": "6.11.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Check null pointers before used\n\n[WHAT & HOW]\nPoniters, such as dc->clk_mgr, are null checked previously in the same\nfunction, so Coverity warns \"implies that \"dc->clk_mgr\" might be null\".\nAs a result, these pointers need to be checked when used again.\n\nThis fixes 10 FORWARD_NULL issues reported by Coverity."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: comprobar punteros nulos antes de usarlos [QU\u00c9 Y C\u00d3MO] Los punteros, como dc->clk_mgr, se comprueban antes en la misma funci\u00f3n, por lo que Coverity advierte que \"implica que \"dc->clk_mgr\" podr\u00eda ser nulo\". Como resultado, estos punteros deben comprobarse cuando se utilicen nuevamente. Esto soluciona 10 problemas de FORWARD_NULL informados por Coverity."}], "id": "CVE-2024-49921", "lastModified": "2024-10-25T15:01:21.077", "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"}]}, "published": "2024-10-21T18:15:14.260", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5b35bf1a82eb29841b67ff5643ba83762250fc24"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/be1fb44389ca3038ad2430dac4234669bc177ee3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drm/amd/display: Check null pointers before used", "id": "2320433", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320433"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amd/display: Check null pointers before used\n[WHAT & HOW]\nPoniters, such as dc->clk_mgr, are null checked previously in the same\nfunction, so Coverity warns \"implies that \"dc->clk_mgr\" might be null\".\nAs a result, these pointers need to be checked when used again.\nThis fixes 10 FORWARD_NULL issues reported by Coverity."], "name": "CVE-2024-49921", "package_state": [{"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-49921\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-49921\nhttps://lore.kernel.org/linux-cve-announce/2024102124-CVE-2024-49921-621b@gregkh/T"], "threat_severity": "Moderate"}

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