{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45972", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.090Z", "datePublished": "2026-05-27T12:18:31.500Z", "dateUpdated": "2026-05-27T12:18:31.500Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-27T12:18:31.500Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF and double free in smb2_open_file()\n\nZero out @err_iov and @err_buftype before retrying SMB2_open() to\nprevent an UAF bug if @data != NULL, otherwise a double free."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2file.c"], "versions": [{"version": "743f70406264348c0830f38409eb6c40a42fb2db", "lessThan": "96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74", "status": "affected", "versionType": "git"}, {"version": "3a6d6b332f92990958602c1e35ce0173e2dd62e9", "lessThan": "7425453ea16dbc3bbb0f6cac4d60b537e5e4d151", "status": "affected", "versionType": "git"}, {"version": "b64e3b5d8d759dd4333992e4ba4dadf9359952c8", "lessThan": "4d339b219004869e96c4ce56b8891f83a38da4c0", "status": "affected", "versionType": "git"}, {"version": "9ee608a64e37cea5b4b13e436c559dd0fb2ad1b5", "lessThan": "e66dcf7bb9c4df5582c82bc3582725abcbfbea73", "status": "affected", "versionType": "git"}, {"version": "e3a43633023e3cacaca60d4b8972d084a2b06236", "lessThan": "639deb962986ef2f5e2a6d5a600c66f922471e81", "status": "affected", "versionType": "git"}, {"version": "e3a43633023e3cacaca60d4b8972d084a2b06236", "lessThan": "ebbbc4bfad4cb355d17c671223d0814ee3ef4eda", "status": "affected", "versionType": "git"}, {"version": "6.1.163", "lessThan": "6.1.165", "status": "affected", "versionType": "semver"}, {"version": "6.6.124", "lessThan": "6.6.128", "status": "affected", "versionType": "semver"}, {"version": "6.12.70", "lessThan": "6.12.75", "status": "affected", "versionType": "semver"}, {"version": "6.18.10", "lessThan": "6.18.14", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2file.c"], "versions": [{"version": "6.19", "status": "affected"}, {"version": "0", "lessThan": "6.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.165", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.128", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.14", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.4", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.1.163", "versionEndExcluding": "6.1.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.124", "versionEndExcluding": "6.6.128"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.70", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.10", "versionEndExcluding": "6.18.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74"}, {"url": "https://git.kernel.org/stable/c/7425453ea16dbc3bbb0f6cac4d60b537e5e4d151"}, {"url": "https://git.kernel.org/stable/c/4d339b219004869e96c4ce56b8891f83a38da4c0"}, {"url": "https://git.kernel.org/stable/c/e66dcf7bb9c4df5582c82bc3582725abcbfbea73"}, {"url": "https://git.kernel.org/stable/c/639deb962986ef2f5e2a6d5a600c66f922471e81"}, {"url": "https://git.kernel.org/stable/c/ebbbc4bfad4cb355d17c671223d0814ee3ef4eda"}], "title": "smb: client: fix potential UAF and double free in smb2_open_file()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF and double free in smb2_open_file()\n\nZero out @err_iov and @err_buftype before retrying SMB2_open() to\nprevent an UAF bug if @data != NULL, otherwise a double free."}], "id": "CVE-2026-45972", "lastModified": "2026-05-27T14:48:03.013", "metrics": {}, "published": "2026-05-27T14:17:14.173", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d339b219004869e96c4ce56b8891f83a38da4c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/639deb962986ef2f5e2a6d5a600c66f922471e81"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7425453ea16dbc3bbb0f6cac4d60b537e5e4d151"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e66dcf7bb9c4df5582c82bc3582725abcbfbea73"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ebbbc4bfad4cb355d17c671223d0814ee3ef4eda"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: smb: client: fix potential UAF and double free in smb2_open_file()", "id": "2481973", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481973"}, "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": ["A flaw was found in the Linux kernel's Server Message Block (SMB) client. This vulnerability, within the `smb2_open_file()` function, could allow an attacker to cause memory corruption due to improper handling of memory during file open operations. This could lead to system instability or potentially enable an attacker to execute arbitrary code."], "name": "CVE-2026-45972", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45972\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45972\nhttps://lore.kernel.org/linux-cve-announce/2026052736-CVE-2026-45972-6b55@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[743f70406264348c0830f38409eb6c40a42fb2db,96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3a6d6b332f92990958602c1e35ce0173e2dd62e9,7425453ea16dbc3bbb0f6cac4d60b537e5e4d151)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b64e3b5d8d759dd4333992e4ba4dadf9359952c8,4d339b219004869e96c4ce56b8891f83a38da4c0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9ee608a64e37cea5b4b13e436c559dd0fb2ad1b5,e66dcf7bb9c4df5582c82bc3582725abcbfbea73)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e3a43633023e3cacaca60d4b8972d084a2b06236,639deb962986ef2f5e2a6d5a600c66f922471e81)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e3a43633023e3cacaca60d4b8972d084a2b06236,ebbbc4bfad4cb355d17c671223d0814ee3ef4eda)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.163,6.1.165)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.124,6.6.128)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.70,6.12.75)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.10,6.18.14)"}}], "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": "6.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.165,6.2.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.128,6.7.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.75,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.14,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.4,6.20.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-27T19:00:16.893872+00:00", "updated": "2026-05-28T02:45:05.166124+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}