CVE-2024-27040

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But in\nthe second if statement, we're not checking if 'replay' is NULL again\nbefore calling replay->funcs->replay_set_power_opt().\n\nif (replay == NULL && force_static)\n return false;\n\n...\n\nif (link->replay_settings.replay_feature_enabled &&\n replay->funcs->replay_set_power_opt) {\n\treplay->funcs->replay_set_power_opt(replay, *power_opts, panel_inst);\n\tlink->replay_settings.replay_power_opt_active = *power_opts;\n}\n\nIf 'replay' is NULL, this will cause a null pointer dereference.\n\nFixes the below found by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active() error: we previously assumed 'replay' could be null (see line 887)"}], "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/link/protocols/link_edp_panel_control.c"], "versions": [{"version": 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But in\nthe second if statement, we're not checking if 'replay' is NULL again\nbefore calling replay->funcs->replay_set_power_opt().\n\nif (replay == NULL && force_static)\n return false;\n\n...\n\nif (link->replay_settings.replay_feature_enabled &&\n replay->funcs->replay_set_power_opt) {\n\treplay->funcs->replay_set_power_opt(replay, *power_opts, panel_inst);\n\tlink->replay_settings.replay_power_opt_active = *power_opts;\n}\n\nIf 'replay' is NULL, this will cause a null pointer dereference.\n\nFixes the below found by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active() error: we previously assumed 'replay' could be null (see line 887)"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.23", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.7.11", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8.2", "versionStartIncluding": "6.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.9", "versionStartIncluding": "6.6"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:02:53.763Z"}}}, "cveMetadata": {"cveId": "CVE-2024-27040", "state": "PUBLISHED", "dateUpdated": "2025-05-04T09:02:53.763Z", "dateReserved": "2024-02-19T14:20:24.212Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-01T12:54:00.645Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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But in\nthe second if statement, we're not checking if 'replay' is NULL again\nbefore calling replay->funcs->replay_set_power_opt().\n\nif (replay == NULL && force_static)\n return false;\n\n...\n\nif (link->replay_settings.replay_feature_enabled &&\n replay->funcs->replay_set_power_opt) {\n\treplay->funcs->replay_set_power_opt(replay, *power_opts, panel_inst);\n\tlink->replay_settings.replay_power_opt_active = *power_opts;\n}\n\nIf 'replay' is NULL, this will cause a null pointer dereference.\n\nFixes the below found by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active() error: we previously assumed 'replay' could be null (see line 887)"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/amd/display: agregue la verificaci\u00f3n NULL 'replay' en 'edp_set_replay_allow_active()' En la primera declaraci\u00f3n if, estamos verificando si 'replay' es NULL. Pero en la segunda declaraci\u00f3n if, no estamos verificando si 'replay' es NULL nuevamente antes de llamar a replay->funcs->replay_set_power_opt(). si (repetici\u00f3n == NULL && force_static) devuelve falso; ... if (enlace->replay_settings.replay_feature_enabled && replay->funcs->replay_set_power_opt) { replay->funcs->replay_set_power_opt(replay, *power_opts, panel_inst); enlace->replay_settings.replay_power_opt_active = *power_opts; } Si 'repetici\u00f3n' es NULL, esto provocar\u00e1 una desreferencia del puntero nulo. Corrige el siguiente error encontrado por smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active(): previamente asumimos que 'repetir' podr\u00eda ser nulo (ver l\u00ednea 887)"}], "id": "CVE-2024-27040", "lastModified": "2026-06-17T07:19:01.707", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-27040", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-06T18:32:42.758321Z", "version": "2.0.3"}}]}, "published": "2024-05-01T13:15:49.600", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76b"}], "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: Add 'replay' NULL check in 'edp_set_replay_allow_active()'", "id": "2278452", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278452"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amd/display: Add 'replay' NULL check in 'edp_set_replay_allow_active()'\nIn the first if statement, we're checking if 'replay' is NULL. But in\nthe second if statement, we're not checking if 'replay' is NULL again\nbefore calling replay->funcs->replay_set_power_opt().\nif (replay == NULL && force_static)\nreturn false;\n...\nif (link->replay_settings.replay_feature_enabled &&\nreplay->funcs->replay_set_power_opt) {\nreplay->funcs->replay_set_power_opt(replay, *power_opts, panel_inst);\nlink->replay_settings.replay_power_opt_active = *power_opts;\n}\nIf 'replay' is NULL, this will cause a null pointer dereference.\nFixes the below found by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active() error: we previously assumed 'replay' could be null (see line 887)", "A vulnerability was found in the Linux kernel's AMD link_edp_panel_control.c driver in the edp_set_replay_allow_active() function, where a NULL pointer dereference can occur due to a lack of proper checks. This issue can happen when the function fails to check whether the replay structure is NULL before attempting to access the function replay->funcs->replay_set_power_opt(), and can lead to memory corruption or system instability."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-27040", "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": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-27040\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-27040\nhttps://lore.kernel.org/linux-cve-announce/2024050112-CVE-2024-27040-e45b@gregkh/T"], "statement": "Red Hat Enterprise Linux is not impacted by this CVE, as the vulnerability in question does not affect the specific versions or configurations of the Linux kernel used in its distributions. This ensures that users of Red Hat Enterprise Linux are not exposed to the potential risks associated with this issue, and no further action or mitigation is necessary for systems running this operating system.", "threat_severity": "Moderate"}

{}