CVE-2026-98960

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98960", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.382Z", "datePublished": "2026-10-23T12:19:28.651Z", "dateUpdated": "2026-10-23T12:19:28.651Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-23T12:19:28.651Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't stash io_uring encoded data across -EAGAIN\n\nReturning -EAGAIN while leaving btrfs_uring_encoded_data in the cmd PDU\nleaks if the request is cancelled or the ring exits before reissue.\nio_uring does not free driver PDU allocations on cleanup.\n\nWrite: io_queue_sqe() always issues with IO_URING_F_NONBLOCK first, so\nreturn -EAGAIN before allocating and free data on every exit.\n\nRead: free on nowait -EAGAIN too; only -EIOCBQUEUED keeps the allocation\nfor btrfs_uring_read_finished()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/ioctl.c"], "versions": [{"version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "lessThan": "4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e", "status": "affected", "versionType": "git"}, {"version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "lessThan": "51562a8cb11628d3a5e105b4c347ec5473e5745f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/ioctl.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.11", "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": "6.13", "versionEndExcluding": "7.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e"}, {"url": "https://git.kernel.org/stable/c/51562a8cb11628d3a5e105b4c347ec5473e5745f"}], "title": "btrfs: don't stash io_uring encoded data across -EAGAIN", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/btrfs/ioctl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e", "status": "affected", "version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "versionType": "git"}, {"lessThan": "51562a8cb11628d3a5e105b4c347ec5473e5745f", "status": "affected", "version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/btrfs/ioctl.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"lessThan": "6.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.11", "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\nbtrfs: don't stash io_uring encoded data across -EAGAIN\n\nReturning -EAGAIN while leaving btrfs_uring_encoded_data in the cmd PDU\nleaks if the request is cancelled or the ring exits before reissue.\nio_uring does not free driver PDU allocations on cleanup.\n\nWrite: io_queue_sqe() always issues with IO_URING_F_NONBLOCK first, so\nreturn -EAGAIN before allocating and free data on every exit.\n\nRead: free on nowait -EAGAIN too; only -EIOCBQUEUED keeps the allocation\nfor btrfs_uring_read_finished()."}], "id": "CVE-2026-98960", "lastModified": "2026-10-23T13:17:17.390", "metrics": {}, "published": "2026-10-23T13:17:17.390", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/51562a8cb11628d3a5e105b4c347ec5473e5745f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: btrfs: don't stash io_uring encoded data across -EAGAIN", "id": "2559662", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559662"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: don't stash io_uring encoded data across -EAGAIN\nReturning -EAGAIN while leaving btrfs_uring_encoded_data in the cmd PDU\nleaks if the request is cancelled or the ring exits before reissue.\nio_uring does not free driver PDU allocations on cleanup.\nWrite: io_queue_sqe() always issues with IO_URING_F_NONBLOCK first, so\nreturn -EAGAIN before allocating and free data on every exit.\nRead: free on nowait -EAGAIN too; only -EIOCBQUEUED keeps the allocation\nfor btrfs_uring_read_finished().", "A flaw was found in the Linux kernel's Btrfs file system. When handling asynchronous input/output (I/O) requests through the io_uring subsystem, allocated memory is not properly released if an operation encounters a retry condition and is canceled before completion. A local user could exploit this flaw to cause a persistent kernel memory leak, potentially leading to system resource exhaustion and a Denial of Service (DoS)."], "name": "CVE-2026-98960", "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": "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"}, {"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": "2026-10-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98960\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98960\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98960.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[34310c442e175f286b4c06ab5caa4e0b267ea31c,4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[34310c442e175f286b4c06ab5caa4e0b267ea31c,51562a8cb11628d3a5e105b4c347ec5473e5745f)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.11,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[34310c442e175f286b4c06ab5caa4e0b267ea31c,4d9c1e0a7fb2cfb1cc924acafc194d2c15c3e83e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[34310c442e175f286b4c06ab5caa4e0b267ea31c,51562a8cb11628d3a5e105b4c347ec5473e5745f)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"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": "6.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.11,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-23T15:15:14.434035+00:00", "updated": "2026-10-29T20:30:18.916908+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}