{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-21686", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.740Z", "datePublished": "2025-02-10T15:58:43.005Z", "dateUpdated": "2025-03-24T15:38:53.245Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-03-24T15:38:53.245Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rsrc: require cloned buffers to share accounting contexts\n\nWhen IORING_REGISTER_CLONE_BUFFERS is used to clone buffers from uring\ninstance A to uring instance B, where A and B use different MMs for\naccounting, the accounting can go wrong:\nIf uring instance A is closed before uring instance B, the pinned memory\ncounters for uring instance B will be decremented, even though the pinned\nmemory was originally accounted through uring instance A; so the MM of\nuring instance B can end up with negative locked memory."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/rsrc.c"], "versions": [{"version": "7cc2a6eadcd7a5aa36ac63e6659f5c6138c7f4d2", "lessThan": "efd96fbe23fa87de39116f632401f67b93be21ab", "status": "affected", "versionType": "git"}, {"version": "7cc2a6eadcd7a5aa36ac63e6659f5c6138c7f4d2", "lessThan": "cafc60ae35f82ebf156b3245f979ca61cbb8e42c", "status": "affected", "versionType": "git"}, {"version": "7cc2a6eadcd7a5aa36ac63e6659f5c6138c7f4d2", "lessThan": "19d340a2988d4f3e673cded9dde405d727d7e248", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["io_uring/rsrc.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.12", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13.1", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/efd96fbe23fa87de39116f632401f67b93be21ab"}, {"url": "https://git.kernel.org/stable/c/cafc60ae35f82ebf156b3245f979ca61cbb8e42c"}, {"url": "https://git.kernel.org/stable/c/19d340a2988d4f3e673cded9dde405d727d7e248"}], "title": "io_uring/rsrc: require cloned buffers to share accounting contexts", "x_generator": {"engine": "bippy-5f407fcff5a0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rsrc: require cloned buffers to share accounting contexts\n\nWhen IORING_REGISTER_CLONE_BUFFERS is used to clone buffers from uring\ninstance A to uring instance B, where A and B use different MMs for\naccounting, the accounting can go wrong:\nIf uring instance A is closed before uring instance B, the pinned memory\ncounters for uring instance B will be decremented, even though the pinned\nmemory was originally accounted through uring instance A; so the MM of\nuring instance B can end up with negative locked memory."}], "id": "CVE-2025-21686", "lastModified": "2025-02-10T16:15:38.100", "metrics": {}, "published": "2025-02-10T16:15:38.100", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/19d340a2988d4f3e673cded9dde405d727d7e248"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cafc60ae35f82ebf156b3245f979ca61cbb8e42c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/efd96fbe23fa87de39116f632401f67b93be21ab"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: io_uring/rsrc: require cloned buffers to share accounting contexts", "id": "2344685", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2344685"}, "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-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nio_uring/rsrc: require cloned buffers to share accounting contexts\nWhen IORING_REGISTER_CLONE_BUFFERS is used to clone buffers from uring\ninstance A to uring instance B, where A and B use different MMs for\naccounting, the accounting can go wrong:\nIf uring instance A is closed before uring instance B, the pinned memory\ncounters for uring instance B will be decremented, even though the pinned\nmemory was originally accounted through uring instance A; so the MM of\nuring instance B can end up with negative locked memory."], "name": "CVE-2025-21686", "package_state": [{"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": "2025-02-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21686\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21686\nhttps://lore.kernel.org/linux-cve-announce/2025021054-CVE-2025-21686-d416@gregkh/T"], "threat_severity": "Moderate"}