CVE-2026-98963

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98963", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.383Z", "datePublished": "2026-10-23T12:19:31.392Z", "dateUpdated": "2026-10-23T12:19:31.392Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-23T12:19:31.392Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio\n\nIf all bios finish before btrfs_encoded_read_regular_fill_pages()\nreturns, it calls btrfs_uring_read_extent_endio() and previously\nreturned the I/O status. A negative errno then made\nbtrfs_uring_read_extent() unlock and free while\nbtrfs_uring_read_finished() did the same again.\n\nReturn -EIOCBQUEUED so only the deferred path cleans up."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/inode.c"], "versions": [{"version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "lessThan": "033dda5b321f01661de518a8d5c8607ae8675b14", "status": "affected", "versionType": "git"}, {"version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "lessThan": "a449433b0e3d4a3715d0bbee078f8c603f03c9f6", "status": "affected", "versionType": "git"}, {"version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "lessThan": "80a8dbb30d2b00b9c671b02bd73f700f6d20100f", "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/inode.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "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": "6.18.57"}, {"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/033dda5b321f01661de518a8d5c8607ae8675b14"}, {"url": "https://git.kernel.org/stable/c/a449433b0e3d4a3715d0bbee078f8c603f03c9f6"}, {"url": "https://git.kernel.org/stable/c/80a8dbb30d2b00b9c671b02bd73f700f6d20100f"}], "title": "btrfs: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/btrfs/inode.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "033dda5b321f01661de518a8d5c8607ae8675b14", "status": "affected", "version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "versionType": "git"}, {"lessThan": "a449433b0e3d4a3715d0bbee078f8c603f03c9f6", "status": "affected", "version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "versionType": "git"}, {"lessThan": "80a8dbb30d2b00b9c671b02bd73f700f6d20100f", "status": "affected", "version": "34310c442e175f286b4c06ab5caa4e0b267ea31c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/btrfs/inode.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": "6.18.*", "status": "unaffected", "version": "6.18.57", "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: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio\n\nIf all bios finish before btrfs_encoded_read_regular_fill_pages()\nreturns, it calls btrfs_uring_read_extent_endio() and previously\nreturned the I/O status. A negative errno then made\nbtrfs_uring_read_extent() unlock and free while\nbtrfs_uring_read_finished() did the same again.\n\nReturn -EIOCBQUEUED so only the deferred path cleans up."}], "id": "CVE-2026-98963", "lastModified": "2026-10-23T13:17:17.713", "metrics": {}, "published": "2026-10-23T13:17:17.713", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/033dda5b321f01661de518a8d5c8607ae8675b14"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/80a8dbb30d2b00b9c671b02bd73f700f6d20100f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a449433b0e3d4a3715d0bbee078f8c603f03c9f6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: btrfs: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio", "id": "2559669", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559669"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/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:\nbtrfs: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio\nIf all bios finish before btrfs_encoded_read_regular_fill_pages()\nreturns, it calls btrfs_uring_read_extent_endio() and previously\nreturned the I/O status. A negative errno then made\nbtrfs_uring_read_extent() unlock and free while\nbtrfs_uring_read_finished() did the same again.\nReturn -EIOCBQUEUED so only the deferred path cleans up.", "A flaw was found in the Btrfs file system within the Linux kernel. During asynchronous read operations, an early I/O error can cause both the direct and deferred error handling paths to release the same resources. This double-free condition can be exploited by a local user to corrupt memory and cause a system crash, leading to a Denial of Service (DoS)."], "name": "CVE-2026-98963", "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-2026-98963\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98963\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98963.mbox"], "threat_severity": "Moderate"}

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