{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64217", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.770Z", "datePublished": "2026-07-24T15:23:05.261Z", "dateUpdated": "2026-07-27T04:58:54.092Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-27T04:58:54.092Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix overrun check in netfs_extract_user_iter()\n\nFix netfs_extract_user_iter() so that if iov_iter_extract_pages() overfills\npages[], then those pages don't get included in the iterator constructed at\nthe end of the function. If there was an overfill, memory corruption has\nalready happened."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/netfs/iterator.c"], "versions": [{"version": "85dd2c8ff368b1446be9febde84afe1d7aec4261", "lessThan": "00efe58bbdcc93272d579ca24bfc912563f4a204", "status": "affected", "versionType": "git"}, {"version": "85dd2c8ff368b1446be9febde84afe1d7aec4261", "lessThan": "96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9", "status": "affected", "versionType": "git"}, {"version": "85dd2c8ff368b1446be9febde84afe1d7aec4261", "lessThan": "afeb32d9bf9aaeea51d0f723a19f14afb73bd94d", "status": "affected", "versionType": "git"}, {"version": "85dd2c8ff368b1446be9febde84afe1d7aec4261", "lessThan": "f48b9157f0f611fa436c360648603d5ded719b12", "status": "affected", "versionType": "git"}, {"version": "85dd2c8ff368b1446be9febde84afe1d7aec4261", "lessThan": "0ef37eef83fad3542ee06db2940433ae1a92b39d", "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/netfs/iterator.c"], "versions": [{"version": "6.3", "status": "affected"}, {"version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.142", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.92", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.34", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.11", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.3", "versionEndExcluding": "6.6.142"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.92"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.18.34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.0.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/00efe58bbdcc93272d579ca24bfc912563f4a204"}, {"url": "https://git.kernel.org/stable/c/96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9"}, {"url": "https://git.kernel.org/stable/c/afeb32d9bf9aaeea51d0f723a19f14afb73bd94d"}, {"url": "https://git.kernel.org/stable/c/f48b9157f0f611fa436c360648603d5ded719b12"}, {"url": "https://git.kernel.org/stable/c/0ef37eef83fad3542ee06db2940433ae1a92b39d"}], "title": "netfs: Fix overrun check in netfs_extract_user_iter()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: netfs: Fix overrun check in netfs_extract_user_iter()", "id": "2506805", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506805"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2026-64217", "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:hummingbird:1", "fix_state": "Not affected", "impact": "important", "package_name": "erlang27", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-07-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64217\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64217\nhttps://lore.kernel.org/linux-cve-announce/2026072415-CVE-2026-64217-889e@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[85dd2c8ff368b1446be9febde84afe1d7aec4261,00efe58bbdcc93272d579ca24bfc912563f4a204)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[85dd2c8ff368b1446be9febde84afe1d7aec4261,96cc3beb2390ba9f9c128c5733c0ccfe450dd4f9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[85dd2c8ff368b1446be9febde84afe1d7aec4261,afeb32d9bf9aaeea51d0f723a19f14afb73bd94d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[85dd2c8ff368b1446be9febde84afe1d7aec4261,f48b9157f0f611fa436c360648603d5ded719b12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[85dd2c8ff368b1446be9febde84afe1d7aec4261,0ef37eef83fad3542ee06db2940433ae1a92b39d)"}}], "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": "6.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.142,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.92,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.34,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.11,8.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-07-24T20:30:14.665966+00:00", "updated": "2026-07-28T16:30:17.883336+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-119"]}