CVE-2026-98245

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98245", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.330Z", "datePublished": "2026-10-06T08:45:14.758Z", "dateUpdated": "2026-10-30T12:37:57.233Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:37:57.233Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: take commit root semaphore when iterating in mark_block_group_to_copy()\n\nmark_block_group_to_copy() iterates over the commit root with\nskip_locking=true. A concurrent transaction commit can swap and free\nthe commit root during iteration, causing use-after-free when\naccessing extent buffers.\n\nFix it by using path->need_commit_sem to protect the commit root search."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/dev-replace.c"], "versions": [{"version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "lessThan": "90242b776df83f8b1ea901f80b568b4fc2318c61", "status": "affected", "versionType": "git"}, {"version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "lessThan": "bffe773f92885603db14047bba0f12089105929e", "status": "affected", "versionType": "git"}, {"version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "lessThan": "93a025166495c63ba5b8ac721c7040d5312e8335", "status": "affected", "versionType": "git"}, {"version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "lessThan": "8e2007b263ea250251ec3021a0a197da990ee1a8", "status": "affected", "versionType": "git"}, {"version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "lessThan": "709f6a5e986535005110c6c69b322f63631cb200", "status": "affected", "versionType": "git"}, {"version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "lessThan": "c32490c6d3f3a9f2d177d57c7eb8bbc347561d08", "status": "affected", "versionType": "git"}, {"version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "lessThan": "0594e3423f4ba3137c734371169491f9a98e9af4", "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/dev-replace.c"], "versions": [{"version": "5.12", "status": "affected"}, {"version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "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": "5.12", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/90242b776df83f8b1ea901f80b568b4fc2318c61"}, {"url": "https://git.kernel.org/stable/c/bffe773f92885603db14047bba0f12089105929e"}, {"url": "https://git.kernel.org/stable/c/93a025166495c63ba5b8ac721c7040d5312e8335"}, {"url": "https://git.kernel.org/stable/c/8e2007b263ea250251ec3021a0a197da990ee1a8"}, {"url": "https://git.kernel.org/stable/c/709f6a5e986535005110c6c69b322f63631cb200"}, {"url": "https://git.kernel.org/stable/c/c32490c6d3f3a9f2d177d57c7eb8bbc347561d08"}, {"url": "https://git.kernel.org/stable/c/0594e3423f4ba3137c734371169491f9a98e9af4"}], "title": "btrfs: take commit root semaphore when iterating in mark_block_group_to_copy()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/btrfs/dev-replace.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "90242b776df83f8b1ea901f80b568b4fc2318c61", "status": "affected", "version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "versionType": "git"}, {"lessThan": "bffe773f92885603db14047bba0f12089105929e", "status": "affected", "version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "versionType": "git"}, {"lessThan": "93a025166495c63ba5b8ac721c7040d5312e8335", "status": "affected", "version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "versionType": "git"}, {"lessThan": "8e2007b263ea250251ec3021a0a197da990ee1a8", "status": "affected", "version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "versionType": "git"}, {"lessThan": "709f6a5e986535005110c6c69b322f63631cb200", "status": "affected", "version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "versionType": "git"}, {"lessThan": "c32490c6d3f3a9f2d177d57c7eb8bbc347561d08", "status": "affected", "version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "versionType": "git"}, {"lessThan": "0594e3423f4ba3137c734371169491f9a98e9af4", "status": "affected", "version": "78ce9fc269af6e69c1399ab910ba6bc81c934f67", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/btrfs/dev-replace.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.12"}, {"lessThan": "5.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.54", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "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: take commit root semaphore when iterating in mark_block_group_to_copy()\n\nmark_block_group_to_copy() iterates over the commit root with\nskip_locking=true. A concurrent transaction commit can swap and free\nthe commit root during iteration, causing use-after-free when\naccessing extent buffers.\n\nFix it by using path->need_commit_sem to protect the commit root search."}], "id": "CVE-2026-98245", "lastModified": "2026-10-30T13:21:12.203", "metrics": {}, "published": "2026-10-06T09:18:12.643", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0594e3423f4ba3137c734371169491f9a98e9af4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/709f6a5e986535005110c6c69b322f63631cb200"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8e2007b263ea250251ec3021a0a197da990ee1a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/90242b776df83f8b1ea901f80b568b4fc2318c61"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/93a025166495c63ba5b8ac721c7040d5312e8335"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bffe773f92885603db14047bba0f12089105929e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c32490c6d3f3a9f2d177d57c7eb8bbc347561d08"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: btrfs: take commit root semaphore when iterating in mark_block_group_to_copy()", "id": "2546436", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546436"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: take commit root semaphore when iterating in mark_block_group_to_copy()\nmark_block_group_to_copy() iterates over the commit root with\nskip_locking=true. A concurrent transaction commit can swap and free\nthe commit root during iteration, causing use-after-free when\naccessing extent buffers.\nFix it by using path->need_commit_sem to protect the commit root search.", "A flaw was found in the Linux kernel's Btrfs file system. A local user could exploit this vulnerability to cause a Denial of Service (DoS) or potentially escalate privileges. The issue occurs due to missing synchronization during device replacement operations, where a concurrent transaction commit can free memory while it is actively being accessed, resulting in a use-after-free condition."], "name": "CVE-2026-98245", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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"}, {"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": "2026-10-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98245\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98245\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98245.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[78ce9fc269af6e69c1399ab910ba6bc81c934f67,8e2007b263ea250251ec3021a0a197da990ee1a8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[78ce9fc269af6e69c1399ab910ba6bc81c934f67,709f6a5e986535005110c6c69b322f63631cb200)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[78ce9fc269af6e69c1399ab910ba6bc81c934f67,c32490c6d3f3a9f2d177d57c7eb8bbc347561d08)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[78ce9fc269af6e69c1399ab910ba6bc81c934f67,0594e3423f4ba3137c734371169491f9a98e9af4)"}}], "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": "generic", "value": "5.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.54,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.8,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-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": "2026-10-06T12:45:17.644522+00:00", "updated": "2026-10-11T20:00:14.110371+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}