CVE-2026-97579

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97579", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-24T16:01:01.156Z", "datePublished": "2026-09-25T10:22:01.216Z", "dateUpdated": "2026-10-19T09:09:41.776Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:09:41.776Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mediatek: vcodec: bound AV1 tile-start copy to the array capacity\n\nvdec_av1_slice_setup_tile() copies tile_cols + 1 / tile_rows + 1 entries\ninto mi_col_starts[] / mi_row_starts[] from the bitstream tile_info. Bound\nthe copy to the array capacity."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bad tile_info.tile_cols/tile_rows reach vdec_av1_slice_setup_tile() from a local process that sets V4L2_CID_STATELESS_AV1_FRAME via VIDIOC_S_EXT_CTRLS on the mtk-vcodec decoder /dev/videoN and queues a request. A spec-conforming AV1 parser caps tile counts at 64, so a remote bitstream does not produce the malformed values.\nAC:L - The attacker sets tile_cols or tile_rows to any value from 65 to 255. validate_av1_frame() never checks them, and the driver's num_tiles check in vdec_av1_slice_setup_tile_group() runs after vdec_av1_slice_setup_pfc() has already done the copy, so the overflow happens on every such request.\nPR:L - It needs only the ability to open the decoder video node, which is normally granted to the video group or to media/GPU processes. No capability check lies on the ioctl or request-queue path to vdec_av1_slice_lat_decode().\nUI:N - The attacker supplies the control payload and queues the request themselves. No other user has to do anything.\nS:U - This is a heap overflow in kernel memory. It gives kernel-level impact within the same security authority, not a VM or IOMMU boundary crossing.\nC:H - Writing up to 764 bytes past mi_row_starts[] runs off the end of the kzalloc'd vdec_av1_slice_pfc into the neighbouring slab object. That corruption can be used to build read primitives and leak kernel memory.\nI:H - The written values are ALIGN(ctrl_tile->mi_*_starts[i]) >> mib_size_log2, taken from the attacker's own control payload. This gives an attacker-shaped heap out-of-bounds write that can corrupt neighbouring objects.\nA:H - Corrupting the pfc fields past the tile arrays (frame, state, ref_idx) and the neighbouring slab object can oops the kernel or hang the decoder, and any local user with device access can repeat it."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c"], "versions": [{"version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "lessThan": "f19acf00818a9eada06a77715d0188c181fb435e", "status": "affected", "versionType": "git"}, {"version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "lessThan": "ad47a250afafa3a51cfb4a004463ff28e66c596e", "status": "affected", "versionType": "git"}, {"version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "lessThan": "7992059c045780095ba5a696dcb2f5400a82803c", "status": "affected", "versionType": "git"}, {"version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "lessThan": "eb0ea3898e3921900939e30c3946dd2b52281859", "status": "affected", "versionType": "git"}, {"version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "lessThan": "37bef2170d4c88fc3d708eecf3ef0f4032bc1372", "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/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.6", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f19acf00818a9eada06a77715d0188c181fb435e"}, {"url": "https://git.kernel.org/stable/c/ad47a250afafa3a51cfb4a004463ff28e66c596e"}, {"url": "https://git.kernel.org/stable/c/7992059c045780095ba5a696dcb2f5400a82803c"}, {"url": "https://git.kernel.org/stable/c/eb0ea3898e3921900939e30c3946dd2b52281859"}, {"url": "https://git.kernel.org/stable/c/37bef2170d4c88fc3d708eecf3ef0f4032bc1372"}], "title": "media: mediatek: vcodec: bound AV1 tile-start copy to the array capacity", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f19acf00818a9eada06a77715d0188c181fb435e", "status": "affected", "version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "versionType": "git"}, {"lessThan": "ad47a250afafa3a51cfb4a004463ff28e66c596e", "status": "affected", "version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "versionType": "git"}, {"lessThan": "7992059c045780095ba5a696dcb2f5400a82803c", "status": "affected", "version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "versionType": "git"}, {"lessThan": "eb0ea3898e3921900939e30c3946dd2b52281859", "status": "affected", "version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "versionType": "git"}, {"lessThan": "37bef2170d4c88fc3d708eecf3ef0f4032bc1372", "status": "affected", "version": "0934d37596151edce115c6d0843a9ad7d5e5d232", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_av1_req_lat_if.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.6"}, {"lessThan": "6.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mediatek: vcodec: bound AV1 tile-start copy to the array capacity\n\nvdec_av1_slice_setup_tile() copies tile_cols + 1 / tile_rows + 1 entries\ninto mi_col_starts[] / mi_row_starts[] from the bitstream tile_info. Bound\nthe copy to the array capacity."}], "id": "CVE-2026-97579", "lastModified": "2026-10-19T10:17:27.220", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-25T11:17:08.677", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/37bef2170d4c88fc3d708eecf3ef0f4032bc1372"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7992059c045780095ba5a696dcb2f5400a82803c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ad47a250afafa3a51cfb4a004463ff28e66c596e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb0ea3898e3921900939e30c3946dd2b52281859"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f19acf00818a9eada06a77715d0188c181fb435e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: media: mediatek: vcodec: bound AV1 tile-start copy to the array capacity", "id": "2541296", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541296"}, "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-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmedia: mediatek: vcodec: bound AV1 tile-start copy to the array capacity\nvdec_av1_slice_setup_tile() copies tile_cols + 1 / tile_rows + 1 entries\ninto mi_col_starts[] / mi_row_starts[] from the bitstream tile_info. Bound\nthe copy to the array capacity.", "A flaw was found in the Linux kernel's MediaTek video codec driver. An out-of-bounds write occurs during AV1 video decoding because tile information from the video stream is copied into fixed-size internal memory without proper bounds checking. A local user could exploit this flaw by submitting specially crafted video data, causing memory corruption that can lead to a system crash and Denial of Service (DoS) or potentially privilege escalation."], "name": "CVE-2026-97579", "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-97579\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-97579\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97579.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0934d37596151edce115c6d0843a9ad7d5e5d232,ad47a250afafa3a51cfb4a004463ff28e66c596e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0934d37596151edce115c6d0843a9ad7d5e5d232,7992059c045780095ba5a696dcb2f5400a82803c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0934d37596151edce115c6d0843a9ad7d5e5d232,eb0ea3898e3921900939e30c3946dd2b52281859)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0934d37596151edce115c6d0843a9ad7d5e5d232,37bef2170d4c88fc3d708eecf3ef0f4032bc1372)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T18:15:15.771550+00:00", "updated": "2026-09-25T22:30:16.995096+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-119", "CWE-787"]}