{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49506", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.586Z", "datePublished": "2025-02-26T02:13:38.168Z", "dateUpdated": "2025-05-04T08:39:24.277Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:39:24.277Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Add vblank register/unregister callback functions\n\nWe encountered a kernel panic issue that callback data will be NULL when\nit's using in ovl irq handler. There is a timing issue between\nmtk_disp_ovl_irq_handler() and mtk_ovl_disable_vblank().\n\nTo resolve this issue, we use the flow to register/unregister vblank cb:\n- Register callback function and callback data when crtc creates.\n- Unregister callback function and callback data when crtc destroies.\n\nWith this solution, we can assure callback data will not be NULL when\nvblank is disable."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/mediatek/mtk_disp_drv.h", "drivers/gpu/drm/mediatek/mtk_disp_ovl.c", "drivers/gpu/drm/mediatek/mtk_disp_rdma.c", "drivers/gpu/drm/mediatek/mtk_drm_crtc.c", "drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c", "drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h"], "versions": [{"version": "9b0704988b151824a51133dc4c921f4273c5d839", "lessThan": "8a2dbdeccef6de47565638abdf3c25f41cdffc37", "status": "affected", "versionType": "git"}, {"version": "9b0704988b151824a51133dc4c921f4273c5d839", "lessThan": "8a265d9838bc3c63579002d55c2b2c655c4f8f26", "status": "affected", "versionType": "git"}, {"version": "9b0704988b151824a51133dc4c921f4273c5d839", "lessThan": "3a4027b5971fe2a94e32754f007d9d3c12c68ad1", "status": "affected", "versionType": "git"}, {"version": "9b0704988b151824a51133dc4c921f4273c5d839", "lessThan": "b74d921b900b6ce38c6247c0a1c86be9f3746493", "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/mediatek/mtk_disp_drv.h", "drivers/gpu/drm/mediatek/mtk_disp_ovl.c", "drivers/gpu/drm/mediatek/mtk_disp_rdma.c", "drivers/gpu/drm/mediatek/mtk_drm_crtc.c", "drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c", "drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h"], "versions": [{"version": "5.12", "status": "affected"}, {"version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.54", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.14", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "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": "5.12", "versionEndExcluding": "5.15.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "5.17.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "5.18.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "5.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8a2dbdeccef6de47565638abdf3c25f41cdffc37"}, {"url": "https://git.kernel.org/stable/c/8a265d9838bc3c63579002d55c2b2c655c4f8f26"}, {"url": "https://git.kernel.org/stable/c/3a4027b5971fe2a94e32754f007d9d3c12c68ad1"}, {"url": "https://git.kernel.org/stable/c/b74d921b900b6ce38c6247c0a1c86be9f3746493"}], "title": "drm/mediatek: Add vblank register/unregister callback functions", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Add vblank register/unregister callback functions\n\nWe encountered a kernel panic issue that callback data will be NULL when\nit's using in ovl irq handler. There is a timing issue between\nmtk_disp_ovl_irq_handler() and mtk_ovl_disable_vblank().\n\nTo resolve this issue, we use the flow to register/unregister vblank cb:\n- Register callback function and callback data when crtc creates.\n- Unregister callback function and callback data when crtc destroies.\n\nWith this solution, we can assure callback data will not be NULL when\nvblank is disable."}], "id": "CVE-2022-49506", "lastModified": "2025-02-26T07:01:26.737", "metrics": {}, "published": "2025-02-26T07:01:26.737", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3a4027b5971fe2a94e32754f007d9d3c12c68ad1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8a265d9838bc3c63579002d55c2b2c655c4f8f26"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8a2dbdeccef6de47565638abdf3c25f41cdffc37"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b74d921b900b6ce38c6247c0a1c86be9f3746493"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: drm/mediatek: Add vblank register/unregister callback functions", "id": "2348034", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348034"}, "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/mediatek: Add vblank register/unregister callback functions\nWe encountered a kernel panic issue that callback data will be NULL when\nit's using in ovl irq handler. There is a timing issue between\nmtk_disp_ovl_irq_handler() and mtk_ovl_disable_vblank().\nTo resolve this issue, we use the flow to register/unregister vblank cb:\n- Register callback function and callback data when crtc creates.\n- Unregister callback function and callback data when crtc destroies.\nWith this solution, we can assure callback data will not be NULL when\nvblank is disable."], "name": "CVE-2022-49506", "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": "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": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49506\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49506\nhttps://lore.kernel.org/linux-cve-announce/2025022608-CVE-2022-49506-2808@gregkh/T"], "threat_severity": "Moderate"}