{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68416", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.391Z", "datePublished": "2026-08-10T12:04:36.582Z", "dateUpdated": "2026-08-17T05:05:10.971Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:05:10.971Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: fix double free and WARN_ON in add_mtd_device() error paths\n\nWhen device_register() or mtd_nvmem_add() fails inside\nadd_mtd_device() for a partition, the error handling triggers\nmtd_release() via put_device() or device_unregister(). mtd_release()\ncalls release_mtd_partition() which frees the mtd_info structure.\nHowever, callers such as mtd_add_partition() and add_mtd_partitions()\nalso call free_partition() in their error paths, resulting in a double\nfree.\n\nAdditionally, release_mtd_partition() hits WARN_ON(!list_empty(\n&mtd->part.node)) because the partition node is still linked in the\nparent's partitions list when the release callback fires from the\nadd_mtd_device() error path.\n\nFix this by overriding dev->type and dev->release before put_device()\nin the error paths, so that device_release() invokes a no-op function\ninstead of mtd_release(). For the mtd_nvmem_add() failure case,\ndevice_unregister() is replaced with device_del() to separate the\ndevice removal from the final kobject reference drop, allowing the\noverride to take effect before put_device() is called.\n\nThe callers' error paths (list_del + free_partition) remain the sole\nowners of mtd_info lifetime on add_mtd_device() failure, which is the\nexpected contract.\n\nThe normal partition teardown path is not affected: del_mtd_device()\ngoes through kref_put() -> mtd_device_release() -> device_unregister()\nwith dev->type still set to &mtd_devtype, so mtd_release() ->\nrelease_mtd_partition() continues to work correctly for the regular\nremoval case."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mtd/mtdcore.c"], "versions": [{"version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "lessThan": "ffe21a3545b439e7b11578a701c22a847c149561", "status": "affected", "versionType": "git"}, {"version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "lessThan": "e1e96aca1bdf391e2f49531c270ffc134e5b49a5", "status": "affected", "versionType": "git"}, {"version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "lessThan": "f98ae09c727dcf34f745c875661c64b642e4abfa", "status": "affected", "versionType": "git"}, {"version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "lessThan": "820f983d641937a787e841ee4b93501f69f5683e", "status": "affected", "versionType": "git"}, {"version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "lessThan": "9d4af746af8ce27eefc2338b2feaa1e01f28b6c3", "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/mtd/mtdcore.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "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": "6.6", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ffe21a3545b439e7b11578a701c22a847c149561"}, {"url": "https://git.kernel.org/stable/c/e1e96aca1bdf391e2f49531c270ffc134e5b49a5"}, {"url": "https://git.kernel.org/stable/c/f98ae09c727dcf34f745c875661c64b642e4abfa"}, {"url": "https://git.kernel.org/stable/c/820f983d641937a787e841ee4b93501f69f5683e"}, {"url": "https://git.kernel.org/stable/c/9d4af746af8ce27eefc2338b2feaa1e01f28b6c3"}], "title": "mtd: fix double free and WARN_ON in add_mtd_device() error paths", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/mtd/mtdcore.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ffe21a3545b439e7b11578a701c22a847c149561", "status": "affected", "version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "versionType": "git"}, {"lessThan": "e1e96aca1bdf391e2f49531c270ffc134e5b49a5", "status": "affected", "version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "versionType": "git"}, {"lessThan": "f98ae09c727dcf34f745c875661c64b642e4abfa", "status": "affected", "version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "versionType": "git"}, {"lessThan": "820f983d641937a787e841ee4b93501f69f5683e", "status": "affected", "version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "versionType": "git"}, {"lessThan": "9d4af746af8ce27eefc2338b2feaa1e01f28b6c3", "status": "affected", "version": "19bfa9ebebb5ec0695def57eb1d80de7e9cab369", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/mtd/mtdcore.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": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nmtd: fix double free and WARN_ON in add_mtd_device() error paths\n\nWhen device_register() or mtd_nvmem_add() fails inside\nadd_mtd_device() for a partition, the error handling triggers\nmtd_release() via put_device() or device_unregister(). mtd_release()\ncalls release_mtd_partition() which frees the mtd_info structure.\nHowever, callers such as mtd_add_partition() and add_mtd_partitions()\nalso call free_partition() in their error paths, resulting in a double\nfree.\n\nAdditionally, release_mtd_partition() hits WARN_ON(!list_empty(\n&mtd->part.node)) because the partition node is still linked in the\nparent's partitions list when the release callback fires from the\nadd_mtd_device() error path.\n\nFix this by overriding dev->type and dev->release before put_device()\nin the error paths, so that device_release() invokes a no-op function\ninstead of mtd_release(). For the mtd_nvmem_add() failure case,\ndevice_unregister() is replaced with device_del() to separate the\ndevice removal from the final kobject reference drop, allowing the\noverride to take effect before put_device() is called.\n\nThe callers' error paths (list_del + free_partition) remain the sole\nowners of mtd_info lifetime on add_mtd_device() failure, which is the\nexpected contract.\n\nThe normal partition teardown path is not affected: del_mtd_device()\ngoes through kref_put() -> mtd_device_release() -> device_unregister()\nwith dev->type still set to &mtd_devtype, so mtd_release() ->\nrelease_mtd_partition() continues to work correctly for the regular\nremoval case."}], "id": "CVE-2026-68416", "lastModified": "2026-08-17T06:17:50.600", "metrics": {}, "published": "2026-08-10T13:20:35.383", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/820f983d641937a787e841ee4b93501f69f5683e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9d4af746af8ce27eefc2338b2feaa1e01f28b6c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e1e96aca1bdf391e2f49531c270ffc134e5b49a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f98ae09c727dcf34f745c875661c64b642e4abfa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ffe21a3545b439e7b11578a701c22a847c149561"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: mtd: fix double free and WARN_ON in add_mtd_device() error paths", "id": "2513422", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513422"}, "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-1341", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmtd: fix double free and WARN_ON in add_mtd_device() error paths\nWhen device_register() or mtd_nvmem_add() fails inside\nadd_mtd_device() for a partition, the error handling triggers\nmtd_release() via put_device() or device_unregister(). mtd_release()\ncalls release_mtd_partition() which frees the mtd_info structure.\nHowever, callers such as mtd_add_partition() and add_mtd_partitions()\nalso call free_partition() in their error paths, resulting in a double\nfree.\nAdditionally, release_mtd_partition() hits WARN_ON(!list_empty(\n&mtd->part.node)) because the partition node is still linked in the\nparent's partitions list when the release callback fires from the\nadd_mtd_device() error path.\nFix this by overriding dev->type and dev->release before put_device()\nin the error paths, so that device_release() invokes a no-op function\ninstead of mtd_release(). For the mtd_nvmem_add() failure case,\ndevice_unregister() is replaced with device_del() to separate the\ndevice removal from the final kobject reference drop, allowing the\noverride to take effect before put_device() is called.\nThe callers' error paths (list_del + free_partition) remain the sole\nowners of mtd_info lifetime on add_mtd_device() failure, which is the\nexpected contract.\nThe normal partition teardown path is not affected: del_mtd_device()\ngoes through kref_put() -> mtd_device_release() -> device_unregister()\nwith dev->type still set to &mtd_devtype, so mtd_release() ->\nrelease_mtd_partition() continues to work correctly for the regular\nremoval case.", "A flaw was found in the Linux kernel's Memory Technology Device (MTD) subsystem. When an error occurs during the addition of an MTD device partition, the error handling routines can attempt to free the same memory region twice. This also causes a warning due to the partition node still being linked. A local attacker could exploit this double-free condition to cause a denial of service (DoS) due to memory corruption."], "name": "CVE-2026-68416", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68416\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68416\nhttps://lore.kernel.org/linux-cve-announce/2026081051-CVE-2026-68416-28e3@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[19bfa9ebb5ec0695def57eb1d80de7e9cab369,ffe21a3545b439e7b11578a701c22a847c149561)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[19bfa9ebb5ec0695def57eb1d80de7e9cab369,e1e96aca1bdf391e2f49531c270ffc134e5b49a5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[19bfa9ebb5ec0695def57eb1d80de7e9cab369,f98ae09c727dcf34f745c875661c64b642e4abfa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[19bfa9ebb5ec0695def57eb1d80de7e9cab369,820f983d641937a787e841ee4b93501f69f5683e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[19bfa9ebb5ec0695def57eb1d80de7e9cab369,9d4af746af8ce27eefc2338b2feaa1e01f28b6c3)"}}], "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": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.7.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,7.2.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc4,*]"}}], "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": "2026-08-10T16:15:04.433155+00:00", "updated": "2026-08-13T03:15:12.154455+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}