{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-71268", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-17T09:08:18.457Z", "datePublished": "2026-03-18T17:40:58.080Z", "dateUpdated": "2026-05-11T21:57:06.708Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:57:06.708Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix reservation leak in some error paths when inserting inline extent\n\nIf we fail to allocate a path or join a transaction, we return from\n__cow_file_range_inline() without freeing the reserved qgroup data,\nresulting in a leak. Fix this by ensuring we call btrfs_qgroup_free_data()\nin such cases."}], "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": "94ed938aba557aa798acf496f09afb289b619fcd", "lessThan": "f7156512c8166d385f574b9ec030479aa7b1e8c9", "status": "affected", "versionType": "git"}, {"version": "94ed938aba557aa798acf496f09afb289b619fcd", "lessThan": "28b97fcbbf523779688e8de5fe55bf2dae3859f6", "status": "affected", "versionType": "git"}, {"version": "94ed938aba557aa798acf496f09afb289b619fcd", "lessThan": "f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913", "status": "affected", "versionType": "git"}, {"version": "94ed938aba557aa798acf496f09afb289b619fcd", "lessThan": "28768bd3abf9995a93f6e01bfce01c60622964dd", "status": "affected", "versionType": "git"}, {"version": "94ed938aba557aa798acf496f09afb289b619fcd", "lessThan": "c1c050f92d8f6aac4e17f7f2230160794fceef0c", "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": "4.4", "status": "affected"}, {"version": "0", "lessThan": "4.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.163", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.124", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.70", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.10", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "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": "4.4", "versionEndExcluding": "6.1.163"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.6.124"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.12.70"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.18.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f7156512c8166d385f574b9ec030479aa7b1e8c9"}, {"url": "https://git.kernel.org/stable/c/28b97fcbbf523779688e8de5fe55bf2dae3859f6"}, {"url": "https://git.kernel.org/stable/c/f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913"}, {"url": "https://git.kernel.org/stable/c/28768bd3abf9995a93f6e01bfce01c60622964dd"}, {"url": "https://git.kernel.org/stable/c/c1c050f92d8f6aac4e17f7f2230160794fceef0c"}], "title": "btrfs: fix reservation leak in some error paths when inserting inline extent", "x_generator": {"engine": "bippy-1.2.0"}}}}

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Fix this by ensuring we call btrfs_qgroup_free_data()\nin such cases."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbtrfs: corrige una fuga de reserva en algunas rutas de error al insertar una extensi\u00f3n en l\u00ednea\n\nSi no logramos asignar una ruta o unirnos a una transacci\u00f3n, regresamos de __cow_file_range_inline() sin liberar los datos de qgroup reservados, lo que resulta en una fuga. Soluciona esto asegurando que llamamos a btrfs_qgroup_free_data() en tales casos."}], "id": "CVE-2025-71268", "lastModified": "2026-06-17T10:03:58.930", "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": "2026-03-18T18:16:21.960", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/28768bd3abf9995a93f6e01bfce01c60622964dd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/28b97fcbbf523779688e8de5fe55bf2dae3859f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c1c050f92d8f6aac4e17f7f2230160794fceef0c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f7156512c8166d385f574b9ec030479aa7b1e8c9"}], "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 reservation leak in some error paths when inserting inline extent", "id": "2448696", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448696"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-71268", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "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": "2026-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-71268\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-71268\nhttps://lore.kernel.org/linux-cve-announce/2026031814-CVE-2025-71268-057a@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,f7156512c8166d385f574b9ec030479aa7b1e8c9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,28b97fcbbf523779688e8de5fe55bf2dae3859f6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,28768bd3abf9995a93f6e01bfce01c60622964dd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,c1c050f92d8f6aac4e17f7f2230160794fceef0c)"}}], "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": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.163,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.124,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.70,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.10,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19,*]"}}], "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"}], "analysis": {"en": {"generated_at": "2026-03-27T21:24:49.386891+00:00", "value": {"mitigation_remediation": ["Update the Linux kernel to a version that includes the btrfs qgroup cleanup fix", "Verify the kernel release notes or vendor advisories for the relevant patch commit", "If an immediate kernel upgrade is not feasible, monitor system resource usage and consider limiting access to Btrfs operations from untrusted users"], "summary": {"action": "Apply patch", "impact": "Memory Leak leading to Resource Exhaustion (Denial of Service)"}, "threat_synthesis": {"affected_systems": "All Linux systems that use the affected Linux kernel implementation are potentially impacted. The Common Platform Enumeration points to the general Linux kernel family, with no specific vendor or version constraints indicated in the advisory. Consequently, any distribution or vendor that incorporates a kernel build containing the vulnerable btrfs path is at risk until the fix is applied.", "description_and_impact": "This vulnerability occurs in the Linux kernel\u2019s Btrfs filesystem when inserting an inline extent. During error conditions such as failure to allocate a path or to join a transaction, the function __cow_file_range_inline() exits without releasing reserved quota\u2011group (qgroup) data, resulting in a memory resource leak. Repeated occurrences can gradually consume kernel memory or quota accounting structures, degrading system performance or causing service outages. The weakness is a classic memory/resource exhaustion scenario, potentially elevating to a denial\u2011of\u2011service state if the leak accumulates.", "risk_and_exploitability": "The CVSS score of 5.5 indicates moderate severity, and the EPSS score of less than 1% reflects low likelihood of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog, further suggesting no known widespread exploitation. Because the bug resides within kernel\u2011level filesystem handling, it requires local or privileged access to trigger the error paths that result in the memory leak. While the risk is not negligible, the practical exploitation window is limited, rendering the overall threat moderate."}}}}, "created": "2026-03-19T08:56:15.344242+00:00", "updated": "2026-03-29T20:29:02.377908+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-401"]}