CVE-2026-46011

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46011", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.092Z", "datePublished": "2026-05-27T12:56:13.198Z", "dateUpdated": "2026-08-05T12:29:08.321Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:29:08.321Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mtk-jpeg: fix use-after-free in release path due to uncancelled work\n\nThe mtk_jpeg_release() function frees the context structure (ctx) without\nfirst cancelling any pending or running work in ctx->jpeg_work. This\ncreates a race window where the workqueue callback may still be accessing\nthe context memory after it has been freed.\n\nRace condition:\n\n CPU 0 (release) CPU 1 (workqueue)\n ---------------- ------------------\n close()\n mtk_jpeg_release()\n mtk_jpegenc_worker()\n ctx = work->data\n // accessing ctx\n\n kfree(ctx) // freed!\n access ctx // UAF!\n\nThe work is queued via queue_work() during JPEG encode/decode operations\n(via mtk_jpeg_device_run). If the device is closed while work is pending\nor running, the work handler will access freed memory.\n\nFix this by calling cancel_work_sync() BEFORE acquiring the mutex. This\nordering is critical: if cancel_work_sync() is called after mutex_lock(),\nand the work handler also tries to acquire the same mutex, it would cause\na deadlock.\n\nNote: The open error path does NOT need cancel_work_sync() because\nINIT_WORK() only initializes the work structure - it does not schedule\nit. Work is only scheduled later during ioctl operations."}], "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 vulnerability is reached through the V4L2 video device node (/dev/videoN, VFL_TYPE_VIDEO) via ioctls and close(), which requires local system access rather than any network or adjacent reachability.\nAC:L - This is a use-after-free race, but the attacker controls both sides \u2014 they queue the encode/decode work via STREAMON/qbuf and then close the fd \u2014 and can retry the open/queue/close sequence indefinitely until they win, so success does not depend on conditions outside their control.\nPR:L - Triggering the path requires opening the JPEG codec video node and issuing m2m ioctls, which needs local access at unprivileged (e.g. video-group / media process) level but not real root.\nUI:N - The attacker performs the entire open, queue-work, and close sequence themselves; no victim action is required.\nS:U - The UAF corrupts kernel heap memory within the kernel's own security authority with no crossing of a VM/IOMMU/sandbox boundary.\nC:H - After ctx is freed and reclaimed, the worker dereferences attacker-influenceable freed memory (pointers, m2m context), enabling disclosure of kernel memory contents.\nI:H - The worker writes to the freed object (e.g. ctx->total_frame_num++) and programs hardware from freed-object fields, providing a write primitive amenable to heap spraying and control-flow corruption.\nA:H - Use-after-free on the freed context reliably causes kernel oops/panic, a clear high availability impact."}]}], "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/jpeg/mtk_jpeg_core.c"], "versions": [{"version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "lessThan": "2209fdae5c2f615930c9af1379c1cfca199ec5d8", "status": "affected", "versionType": "git"}, {"version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "lessThan": "0498b27a1542021d90269d58347501d4c3ccd84e", "status": "affected", "versionType": "git"}, {"version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "lessThan": "26506a30e0e26d612f82a7bf0e395626968a44e6", "status": "affected", "versionType": "git"}, {"version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "lessThan": "e78c39f720679fcf3a2eacd82725ec3ea2648301", "status": "affected", "versionType": "git"}, {"version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "lessThan": "34c519feef3e4fcff1078dc8bdb25fbbbd10303f", "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/jpeg/mtk_jpeg_core.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.2", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2209fdae5c2f615930c9af1379c1cfca199ec5d8"}, {"url": "https://git.kernel.org/stable/c/0498b27a1542021d90269d58347501d4c3ccd84e"}, {"url": "https://git.kernel.org/stable/c/26506a30e0e26d612f82a7bf0e395626968a44e6"}, {"url": "https://git.kernel.org/stable/c/e78c39f720679fcf3a2eacd82725ec3ea2648301"}, {"url": "https://git.kernel.org/stable/c/34c519feef3e4fcff1078dc8bdb25fbbbd10303f"}], "title": "media: mtk-jpeg: fix use-after-free in release path due to uncancelled work", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2209fdae5c2f615930c9af1379c1cfca199ec5d8", "status": "affected", "version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "versionType": "git"}, {"lessThan": "0498b27a1542021d90269d58347501d4c3ccd84e", "status": "affected", "version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "versionType": "git"}, {"lessThan": "26506a30e0e26d612f82a7bf0e395626968a44e6", "status": "affected", "version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "versionType": "git"}, {"lessThan": "e78c39f720679fcf3a2eacd82725ec3ea2648301", "status": "affected", "version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "versionType": "git"}, {"lessThan": "34c519feef3e4fcff1078dc8bdb25fbbbd10303f", "status": "affected", "version": "5fb1c2361e5630491d2a2f9359654eb022601bc0", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.2"}, {"lessThan": "6.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.140", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.86", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.27", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A1A92866-F406-43B5-B2D1-CFC274753E9D", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "55DA1C62-9991-451E-B8A8-E0004E00F789", "versionEndExcluding": "6.12.86", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A10AC84F-C058-47D5-85B4-E6E51A613B74", "versionEndExcluding": "6.18.27", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3", "versionEndExcluding": "7.0.4", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mtk-jpeg: fix use-after-free in release path due to uncancelled work\n\nThe mtk_jpeg_release() function frees the context structure (ctx) without\nfirst cancelling any pending or running work in ctx->jpeg_work. This\ncreates a race window where the workqueue callback may still be accessing\nthe context memory after it has been freed.\n\nRace condition:\n\n CPU 0 (release) CPU 1 (workqueue)\n ---------------- ------------------\n close()\n mtk_jpeg_release()\n mtk_jpegenc_worker()\n ctx = work->data\n // accessing ctx\n\n kfree(ctx) // freed!\n access ctx // UAF!\n\nThe work is queued via queue_work() during JPEG encode/decode operations\n(via mtk_jpeg_device_run). If the device is closed while work is pending\nor running, the work handler will access freed memory.\n\nFix this by calling cancel_work_sync() BEFORE acquiring the mutex. This\nordering is critical: if cancel_work_sync() is called after mutex_lock(),\nand the work handler also tries to acquire the same mutex, it would cause\na deadlock.\n\nNote: The open error path does NOT need cancel_work_sync() because\nINIT_WORK() only initializes the work structure - it does not schedule\nit. Work is only scheduled later during ioctl operations."}], "id": "CVE-2026-46011", "lastModified": "2026-06-17T10:52:53.740", "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": "2026-05-27T14:17:19.250", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0498b27a1542021d90269d58347501d4c3ccd84e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2209fdae5c2f615930c9af1379c1cfca199ec5d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/26506a30e0e26d612f82a7bf0e395626968a44e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/34c519feef3e4fcff1078dc8bdb25fbbbd10303f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e78c39f720679fcf3a2eacd82725ec3ea2648301"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: media: mtk-jpeg: fix use-after-free in release path due to uncancelled work", "id": "2481912", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481912"}, "csaw": false, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's MediaTek JPEG (mtk-jpeg) driver. This use-after-free vulnerability arises from a race condition where the driver frees memory while it may still be in use by a work queue. This can allow a local attacker to cause system instability, leading to a denial of service (DoS), or potentially execute arbitrary code."], "name": "CVE-2026-46011", "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": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46011\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46011\nhttps://lore.kernel.org/linux-cve-announce/2026052744-CVE-2026-46011-ca0f@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5fb1c2361e5630491d2a2f9359654eb022601bc0,2209fdae5c2f615930c9af1379c1cfca199ec5d8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5fb1c2361e5630491d2a2f9359654eb022601bc0,0498b27a1542021d90269d58347501d4c3ccd84e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5fb1c2361e5630491d2a2f9359654eb022601bc0,26506a30e0e26d612f82a7bf0e395626968a44e6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5fb1c2361e5630491d2a2f9359654eb022601bc0,e78c39f720679fcf3a2eacd82725ec3ea2648301)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5fb1c2361e5630491d2a2f9359654eb022601bc0,34c519feef3e4fcff1078dc8bdb25fbbbd10303f)"}}], "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": "semver", "value": "6.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.140,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.86,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.27,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.4,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc1,*]"}}], "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": "2026-05-27T18:45:39.822542+00:00", "updated": "2026-06-17T23:45:14.015908+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}