CVE-2026-64447

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64447", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.788Z", "datePublished": "2026-07-25T08:51:18.096Z", "dateUpdated": "2026-08-17T04:55:50.059Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:55:50.059Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: media: ipu7: fix double-free and use-after-free in error paths\n\nIn both ipu7_isys_init() and ipu7_psys_init(), pdata is allocated and\nthen passed to ipu7_bus_initialize_device(), which stores it in\nadev->pdata. The ipu7_bus_release() function frees adev->pdata when the\ndevice's reference count drops to zero.\n\nTwo error paths incorrectly call kfree(pdata) after the device teardown\nhas already freed it:\n\n1. When ipu7_mmu_init() fails: put_device() is called, which drops the\n reference count to zero and triggers ipu7_bus_release() ->\n kfree(pdata). The subsequent kfree(pdata) is a double-free.\n\n2. When ipu7_bus_add_device() fails: it calls auxiliary_device_uninit()\n internally, which calls put_device() -> ipu7_bus_release() ->\n kfree(pdata). The subsequent kfree(pdata) is again a double-free.\n\nNote that the kfree(pdata) when ipu7_bus_initialize_device() itself\nfails is correct, because in that case auxiliary_device_init() failed\nand the release function was never set up, so pdata must be freed\nmanually.\n\nAdditionally, the error code was not saved before calling put_device(),\ncausing ERR_CAST() to dereference the already-freed adev pointer when\nconstructing the return value. Fix this by saving the error from\ndev_err_probe() before put_device() and returning ERR_PTR() instead.\n\nRemove the redundant kfree(pdata) calls and fix the use-after-free in\nthe return values of the two affected error paths."}], "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 affected functions are reached from the Intel IPU7/IPU7.5 PCI driver probe, not network traffic or V4L2 ioctls. Exploitation therefore requires local execution to influence the probe-time failure and heap state.\nAC:L - Once ipu7_mmu_init() or auxiliary_device_add() fails, the double-free and use-after-free execute deterministically without a race. Allocation pressure and heap grooming are attacker-controlled in the highest reasonable scenario.\nPR:L - Direct module loading and sysfs reprobe operations require initial-namespace administration and are not enabled by user namespaces. However, an ordinary local user can sustain allocation pressure during an automatic probe, making basic local access sufficient in the highest reasonable scenario.\nUI:N - PCI probing and error unwinding are kernel-driven; no separate victim action is required once the triggering conditions are established.\nS:U - The corruption occurs within the host kernel and affects resources governed by that same security authority, without crossing a VM, IOMMU, or other scope boundary.\nC:H - The double-free can produce overlapping kernel allocations, while the companion use-after-free accesses a freed container. Attacker-controlled reuse can expose arbitrary kernel memory.\nI:H - The duplicated allocator entry can yield two live users of one kernel object, enabling corruption of security-sensitive objects and potentially arbitrary writes or control-flow hijacking.\nA:H - The double-free can trip allocator hardening or corrupt SLUB state, while the use-after-free can cause invalid-pointer accesses, resulting in a kernel oops or panic."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/staging/media/ipu7/ipu7.c"], "versions": [{"version": "b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5", "lessThan": "b5ddc7257bee71f5b8cf9083e2b0ac0427e9fbb3", "status": "affected", "versionType": "git"}, {"version": "b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5", "lessThan": "837c1f9655421055f751ed34745e820a54a27642", "status": "affected", "versionType": "git"}, {"version": "b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5", "lessThan": "d3a9a8cf2d7fd61a2f63df61f6cbc0a9bb007cc0", "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/staging/media/ipu7/ipu7.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "6.17", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b5ddc7257bee71f5b8cf9083e2b0ac0427e9fbb3"}, {"url": "https://git.kernel.org/stable/c/837c1f9655421055f751ed34745e820a54a27642"}, {"url": "https://git.kernel.org/stable/c/d3a9a8cf2d7fd61a2f63df61f6cbc0a9bb007cc0"}], "title": "staging: media: ipu7: fix double-free and use-after-free in error paths", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/staging/media/ipu7/ipu7.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b5ddc7257bee71f5b8cf9083e2b0ac0427e9fbb3", "status": "affected", "version": "b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5", "versionType": "git"}, {"lessThan": "837c1f9655421055f751ed34745e820a54a27642", "status": "affected", "version": "b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5", "versionType": "git"}, {"lessThan": "d3a9a8cf2d7fd61a2f63df61f6cbc0a9bb007cc0", "status": "affected", "version": "b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/staging/media/ipu7/ipu7.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"lessThan": "6.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.39", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E1B75939-A033-4965-9E4D-6588E462C6DF", "versionEndExcluding": "6.18.39", "versionStartIncluding": "6.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6228DDD6-4557-4AA3-9F43-AB995D471E42", "versionEndExcluding": "7.1.4", "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\nstaging: media: ipu7: fix double-free and use-after-free in error paths\n\nIn both ipu7_isys_init() and ipu7_psys_init(), pdata is allocated and\nthen passed to ipu7_bus_initialize_device(), which stores it in\nadev->pdata. The ipu7_bus_release() function frees adev->pdata when the\ndevice's reference count drops to zero.\n\nTwo error paths incorrectly call kfree(pdata) after the device teardown\nhas already freed it:\n\n1. When ipu7_mmu_init() fails: put_device() is called, which drops the\n reference count to zero and triggers ipu7_bus_release() ->\n kfree(pdata). The subsequent kfree(pdata) is a double-free.\n\n2. When ipu7_bus_add_device() fails: it calls auxiliary_device_uninit()\n internally, which calls put_device() -> ipu7_bus_release() ->\n kfree(pdata). The subsequent kfree(pdata) is again a double-free.\n\nNote that the kfree(pdata) when ipu7_bus_initialize_device() itself\nfails is correct, because in that case auxiliary_device_init() failed\nand the release function was never set up, so pdata must be freed\nmanually.\n\nAdditionally, the error code was not saved before calling put_device(),\ncausing ERR_CAST() to dereference the already-freed adev pointer when\nconstructing the return value. Fix this by saving the error from\ndev_err_probe() before put_device() and returning ERR_PTR() instead.\n\nRemove the redundant kfree(pdata) calls and fix the use-after-free in\nthe return values of the two affected error paths."}], "id": "CVE-2026-64447", "lastModified": "2026-09-03T15:37:05.350", "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": "2026-07-25T10:17:29.437", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/837c1f9655421055f751ed34745e820a54a27642"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b5ddc7257bee71f5b8cf9083e2b0ac0427e9fbb3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d3a9a8cf2d7fd61a2f63df61f6cbc0a9bb007cc0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: staging: media: ipu7: fix double-free and use-after-free in error paths", "id": "2507070", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507070"}, "csaw": false, "cwe": "CWE-1341", "details": ["A flaw was found in the Linux kernel's `ipu7` media driver. This vulnerability involves incorrect memory management where memory can be freed multiple times and subsequently accessed after it has been freed, specifically during error handling paths in device initialization. A local attacker could potentially exploit this memory corruption to cause a system crash (denial of service) or, in more severe cases, execute arbitrary code with elevated privileges."], "name": "CVE-2026-64447", "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": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64447\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64447\nhttps://lore.kernel.org/linux-cve-announce/2026072540-CVE-2026-64447-59b7@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5,b5ddc7257bee71f5b8cf9083e2b0ac0427e9fbb3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5,837c1f9655421055f751ed34745e820a54a27642)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b7fe4c0019b12d60ece3e99eeb0ccfd5a1d103e5,d3a9a8cf2d7fd61a2f63df61f6cbc0a9bb007cc0)"}}], "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": "6.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-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": "2026-07-25T19:30:03.947968+00:00", "updated": "2026-09-03T16:30:05.485094+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}