CVE-2026-98082

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98082", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.075Z", "datePublished": "2026-09-25T10:24:18.685Z", "dateUpdated": "2026-10-19T09:13:34.616Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:13:34.616Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix the possible bioc_list memory leak during error\n\nThere are two possible ways to leak bioc memory on\nbtrfs_ordered_extent::bioc_list:\n\n- An error occurred for btrfs_insert_one_raid_extent()\n Then the function btrfs_insert_raid_extent() immediately return\n without freeing any bioc in the bioc_list.\n\n- An ordered extent hit an IO error\n In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and\n skip the call on btrfs_insert_raid_extent() completely.\n\nFix the problem by:\n\n- Introduce a new helper, btrfs_cleanup_ordered_bioc_list()\n Which will remove all bioc from the bioc_list, and release the bioc.\n\n- Call the above helper for btrfs_insert_raid_extent()\n So that the cleanup helper is always called no matter what.\n\n- Call the above helper for btrfs_finish_one_ordered()\n This is called just before the final release on the ordered extent.\n\nThis was reported by Sashiko when reviewing another patch."}], "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", "fs/btrfs/raid-stripe-tree.c", "fs/btrfs/raid-stripe-tree.h"], "versions": [{"version": "ab69bf6f8970c09d3735c25094e9471d54365282", "lessThan": "d043c43d2b4ebcd75ee7f907948ef2847306d6b2", "status": "affected", "versionType": "git"}, 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"6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d043c43d2b4ebcd75ee7f907948ef2847306d6b2"}, {"url": "https://git.kernel.org/stable/c/83f0c973cffb184d019390ffdb5d31de5c85bc61"}, {"url": "https://git.kernel.org/stable/c/1b4d4e890c2c85d0f6365b5a08c48b4bbf85deb0"}, {"url": "https://git.kernel.org/stable/c/bb4da45766d16503821f167054db76b735d89e94"}, {"url": "https://git.kernel.org/stable/c/afbe73778338e6d1ac8c4486fbdf33f0cc1f2624"}], "title": "btrfs: fix the possible bioc_list memory leak during error", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/btrfs/inode.c", "fs/btrfs/raid-stripe-tree.c", "fs/btrfs/raid-stripe-tree.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d043c43d2b4ebcd75ee7f907948ef2847306d6b2", "status": "affected", "version": "ab69bf6f8970c09d3735c25094e9471d54365282", "versionType": "git"}, {"lessThan": "83f0c973cffb184d019390ffdb5d31de5c85bc61", "status": "affected", "version": "02c372e1f016e5113217597ab37b399c4e407477", "versionType": "git"}, {"lessThan": "1b4d4e890c2c85d0f6365b5a08c48b4bbf85deb0", "status": "affected", "version": "02c372e1f016e5113217597ab37b399c4e407477", "versionType": "git"}, {"lessThan": "bb4da45766d16503821f167054db76b735d89e94", "status": "affected", "version": "02c372e1f016e5113217597ab37b399c4e407477", "versionType": "git"}, {"lessThan": "afbe73778338e6d1ac8c4486fbdf33f0cc1f2624", "status": "affected", "version": "02c372e1f016e5113217597ab37b399c4e407477", "versionType": "git"}, {"lessThan": "6.6.158", "status": "affected", "version": "6.6.130", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/btrfs/inode.c", "fs/btrfs/raid-stripe-tree.c", "fs/btrfs/raid-stripe-tree.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.7"}, {"lessThan": "6.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FDC8EFE7-C481-4EDA-B6EA-AD5862994847", "versionEndExcluding": "6.6.158", "versionStartIncluding": "6.6.130", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "47BC31C9-3D9E-4B96-B5F8-291D6AD55D81", "versionEndExcluding": "6.12.111", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7561AABB-6D5A-4324-BC66-C6C6B012AFD8", "versionEndExcluding": "6.18.53", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "19917B2D-B4B2-4416-A482-9C7C4929A921", "versionEndExcluding": "7.2.7", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.3:rc1:*:*:*:*:*:*", "matchCriteriaId": "11E35E1B-5DB4-4AB9-9706-CD73B799EADF", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix the possible bioc_list memory leak during error\n\nThere are two possible ways to leak bioc memory on\nbtrfs_ordered_extent::bioc_list:\n\n- An error occurred for btrfs_insert_one_raid_extent()\n Then the function btrfs_insert_raid_extent() immediately return\n without freeing any bioc in the bioc_list.\n\n- An ordered extent hit an IO error\n In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and\n skip the call on btrfs_insert_raid_extent() completely.\n\nFix the problem by:\n\n- Introduce a new helper, btrfs_cleanup_ordered_bioc_list()\n Which will remove all bioc from the bioc_list, and release the bioc.\n\n- Call the above helper for btrfs_insert_raid_extent()\n So that the cleanup helper is always called no matter what.\n\n- Call the above helper for btrfs_finish_one_ordered()\n This is called just before the final release on the ordered extent.\n\nThis was reported by Sashiko when reviewing another patch."}], "id": "CVE-2026-98082", "lastModified": "2026-10-19T10:18:04.247", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-09-25T11:17:37.730", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1b4d4e890c2c85d0f6365b5a08c48b4bbf85deb0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/83f0c973cffb184d019390ffdb5d31de5c85bc61"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/afbe73778338e6d1ac8c4486fbdf33f0cc1f2624"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bb4da45766d16503821f167054db76b735d89e94"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d043c43d2b4ebcd75ee7f907948ef2847306d6b2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: btrfs: fix the possible bioc_list memory leak during error", "id": "2541300", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541300"}, "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-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: fix the possible bioc_list memory leak during error\nThere are two possible ways to leak bioc memory on\nbtrfs_ordered_extent::bioc_list:\n- An error occurred for btrfs_insert_one_raid_extent()\nThen the function btrfs_insert_raid_extent() immediately return\nwithout freeing any bioc in the bioc_list.\n- An ordered extent hit an IO error\nIn that case the ordered extent will have BTRFS_ORDERED_IOERR set, and\nskip the call on btrfs_insert_raid_extent() completely.\nFix the problem by:\n- Introduce a new helper, btrfs_cleanup_ordered_bioc_list()\nWhich will remove all bioc from the bioc_list, and release the bioc.\n- Call the above helper for btrfs_insert_raid_extent()\nSo that the cleanup helper is always called no matter what.\n- Call the above helper for btrfs_finish_one_ordered()\nThis is called just before the final release on the ordered extent.\nThis was reported by Sashiko when reviewing another patch.", "A flaw was found in the Linux kernel's Btrfs file system. Under specific error handling conditions, such as storage input/output (I/O) errors or failures during RAID extent operations, the kernel fails to release allocated block I/O tracking memory. A local user capable of triggering these file system error paths could cause continuous memory leaks, resulting in kernel memory exhaustion and a Denial of Service (DoS)."], "name": "CVE-2026-98082", "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"}, {"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": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98082\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98082\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98082.mbox"], "threat_severity": "Low"}

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