{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64357", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.782Z", "datePublished": "2026-07-25T08:50:14.676Z", "dateUpdated": "2026-07-25T08:50:14.676Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:50:14.676Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: fix exchmaps reservation limit check\n\nxfs_exchmaps_estimate_overhead() adds the bmbt and rmapbt\noverhead to a local resblks variable, but the final UINT_MAX\ncheck still tests req->resblks. That is the reservation value\nfrom before the overhead was added.\n\nThe computed value is stored back in req->resblks and later passed\nto xfs_trans_alloc(), whose block reservation argument is unsigned\nint. Check the computed reservation so the existing limit applies\nto the value that will be used."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/xfs/libxfs/xfs_exchmaps.c"], "versions": [{"version": "966ceafc7a437105ecfe1cadb3747b2965a260ca", "lessThan": "c597c8580d50127fc1221b5a5b653a94d49e23e3", "status": "affected", "versionType": "git"}, {"version": "966ceafc7a437105ecfe1cadb3747b2965a260ca", "lessThan": "a62ef2d13d6e7270dd5e88c6082bf2d0edcd5112", "status": "affected", "versionType": "git"}, {"version": "966ceafc7a437105ecfe1cadb3747b2965a260ca", "lessThan": "4707344b0d36d1012c8a1716e20167cd3afdd5f1", "status": "affected", "versionType": "git"}, {"version": "966ceafc7a437105ecfe1cadb3747b2965a260ca", "lessThan": "0a5213bbff62b51c7d4999ac8c7e11ea57d00d45", "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/xfs/libxfs/xfs_exchmaps.c"], "versions": [{"version": "6.10", "status": "affected"}, {"version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "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": "6.10", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c597c8580d50127fc1221b5a5b653a94d49e23e3"}, {"url": "https://git.kernel.org/stable/c/a62ef2d13d6e7270dd5e88c6082bf2d0edcd5112"}, {"url": "https://git.kernel.org/stable/c/4707344b0d36d1012c8a1716e20167cd3afdd5f1"}, {"url": "https://git.kernel.org/stable/c/0a5213bbff62b51c7d4999ac8c7e11ea57d00d45"}], "title": "xfs: fix exchmaps reservation limit check", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: xfs: fix exchmaps reservation limit check", "id": "2507195", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507195"}, "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-190", "details": ["No description is available for this CVE."], "name": "CVE-2026-64357", "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": "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64357\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64357\nhttps://lore.kernel.org/linux-cve-announce/2026072519-CVE-2026-64357-8c69@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[966ceafc7a437105ecfe1cadb3747b2965a260ca,c597c8580d50127fc1221b5a5b653a94d49e23e3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[966ceafc7a437105ecfe1cadb3747b2965a260ca,a62ef2d13d6e7270dd5e88c6082bf2d0edcd5112)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[966ceafc7a437105ecfe1cadb3747b2965a260ca,4707344b0d36d1012c8a1716e20167cd3afdd5f1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[966ceafc7a437105ecfe1cadb3747b2965a260ca,0a5213bbff62b51c7d4999ac8c7e11ea57d00d45)"}}], "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": "6.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.96,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "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": "2026-07-25T14:30:03.597277+00:00", "updated": "2026-07-27T05:45:02.873090+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-680"]}