CVE-2026-72025

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72025", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.900Z", "datePublished": "2026-08-15T05:51:49.928Z", "dateUpdated": "2026-08-18T06:56:09.214Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-18T06:56:09.214Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/monwriter: Reject buffer reuse with different data length\n\nWhen data buffers are reused, e.g. for interval sample records, the\nfirst record determines the data length, and the size of the buffer for\nuser copy. Current monwriter code does not check if the data length was\nchanged for subsequent records, which also would never happen for valid\nuser programs.\n\nHowever, a malicious user could change the data length, resulting in out\nof bounds user copy to the kernel buffer, and memory corruption. By\ndefault, the monwriter misc device is created with root-only permissions,\nso practical impact is typically low.\n\nFix this by checking for changed data length and rejecting such records."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/s390/char/monwriter.c"], "versions": [{"version": "31b58088292c7f00f0b81088bfb557285b0b6247", "lessThan": "096dff1247037d329c04b3a5be0ecdfb1c5c7ac6", "status": "affected", "versionType": "git"}, {"version": "31b58088292c7f00f0b81088bfb557285b0b6247", "lessThan": "d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab", "status": "affected", "versionType": "git"}, {"version": "31b58088292c7f00f0b81088bfb557285b0b6247", "lessThan": "759d91378203ea35fa9bca6726dcf0010de081fb", "status": "affected", "versionType": "git"}, {"version": "31b58088292c7f00f0b81088bfb557285b0b6247", "lessThan": "036bc5661060702e798d215e81bb46da530965b3", "status": "affected", "versionType": "git"}, {"version": "31b58088292c7f00f0b81088bfb557285b0b6247", "lessThan": "01f3ce411711c2c919598ea25320a5a48f71edbc", "status": "affected", "versionType": "git"}, {"version": "31b58088292c7f00f0b81088bfb557285b0b6247", "lessThan": "f0745496f7c171271cafd9457df3b914a483ddeb", "status": "affected", "versionType": "git"}, {"version": "31b58088292c7f00f0b81088bfb557285b0b6247", "lessThan": "ae5347f3db1782c6118f6cc0d9fd8b1d43397db3", "status": "affected", "versionType": "git"}, {"version": "31b58088292c7f00f0b81088bfb557285b0b6247", "lessThan": "2995ccec260caa9e85b3301a4aba1e66ed80ad74", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/s390/char/monwriter.c"], "versions": [{"version": "2.6.19", "status": "affected"}, {"version": "0", "lessThan": "2.6.19", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "2.6.19", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/096dff1247037d329c04b3a5be0ecdfb1c5c7ac6"}, {"url": "https://git.kernel.org/stable/c/d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab"}, {"url": "https://git.kernel.org/stable/c/759d91378203ea35fa9bca6726dcf0010de081fb"}, {"url": "https://git.kernel.org/stable/c/036bc5661060702e798d215e81bb46da530965b3"}, {"url": "https://git.kernel.org/stable/c/01f3ce411711c2c919598ea25320a5a48f71edbc"}, {"url": "https://git.kernel.org/stable/c/f0745496f7c171271cafd9457df3b914a483ddeb"}, {"url": "https://git.kernel.org/stable/c/ae5347f3db1782c6118f6cc0d9fd8b1d43397db3"}, {"url": "https://git.kernel.org/stable/c/2995ccec260caa9e85b3301a4aba1e66ed80ad74"}], "title": "s390/monwriter: Reject buffer reuse with different data length", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/s390/char/monwriter.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "096dff1247037d329c04b3a5be0ecdfb1c5c7ac6", "status": "affected", "version": "31b58088292c7f00f0b81088bfb557285b0b6247", "versionType": "git"}, {"lessThan": "d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab", "status": "affected", "version": "31b58088292c7f00f0b81088bfb557285b0b6247", "versionType": "git"}, {"lessThan": "759d91378203ea35fa9bca6726dcf0010de081fb", "status": "affected", "version": "31b58088292c7f00f0b81088bfb557285b0b6247", "versionType": "git"}, {"lessThan": "036bc5661060702e798d215e81bb46da530965b3", "status": "affected", "version": "31b58088292c7f00f0b81088bfb557285b0b6247", "versionType": "git"}, {"lessThan": "01f3ce411711c2c919598ea25320a5a48f71edbc", "status": "affected", "version": "31b58088292c7f00f0b81088bfb557285b0b6247", "versionType": "git"}, {"lessThan": "f0745496f7c171271cafd9457df3b914a483ddeb", "status": "affected", "version": "31b58088292c7f00f0b81088bfb557285b0b6247", "versionType": "git"}, {"lessThan": "ae5347f3db1782c6118f6cc0d9fd8b1d43397db3", "status": "affected", "version": "31b58088292c7f00f0b81088bfb557285b0b6247", "versionType": "git"}, {"lessThan": "2995ccec260caa9e85b3301a4aba1e66ed80ad74", "status": "affected", "version": "31b58088292c7f00f0b81088bfb557285b0b6247", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/s390/char/monwriter.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.19"}, {"lessThan": "2.6.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\ns390/monwriter: Reject buffer reuse with different data length\n\nWhen data buffers are reused, e.g. for interval sample records, the\nfirst record determines the data length, and the size of the buffer for\nuser copy. Current monwriter code does not check if the data length was\nchanged for subsequent records, which also would never happen for valid\nuser programs.\n\nHowever, a malicious user could change the data length, resulting in out\nof bounds user copy to the kernel buffer, and memory corruption. By\ndefault, the monwriter misc device is created with root-only permissions,\nso practical impact is typically low.\n\nFix this by checking for changed data length and rejecting such records."}], "id": "CVE-2026-72025", "lastModified": "2026-08-18T07:16:52.647", "metrics": {}, "published": "2026-08-15T06:21:01.580", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/01f3ce411711c2c919598ea25320a5a48f71edbc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/036bc5661060702e798d215e81bb46da530965b3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/096dff1247037d329c04b3a5be0ecdfb1c5c7ac6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2995ccec260caa9e85b3301a4aba1e66ed80ad74"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/759d91378203ea35fa9bca6726dcf0010de081fb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ae5347f3db1782c6118f6cc0d9fd8b1d43397db3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f0745496f7c171271cafd9457df3b914a483ddeb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: s390/monwriter: Reject buffer reuse with different data length", "id": "2516232", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516232"}, "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-787", "details": ["A flaw was found in the Linux kernel's s390/monwriter component. This vulnerability allows a malicious local user with elevated privileges to cause memory corruption. By changing the data length during buffer reuse, the `monwriter` code fails to validate the new length, leading to an out-of-bounds write to the kernel buffer. While the `monwriter` device typically requires root permissions, successful exploitation could lead to system instability or further compromise."], "name": "CVE-2026-72025", "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72025\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72025\nhttps://lore.kernel.org/linux-cve-announce/2026081510-CVE-2026-72025-3a2a@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,096dff1247037d329c04b3a5be0ecdfb1c5c7ac6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,d39cf4a6d721b1ae21eb53bbf3e8cd984253d7ab)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,759d91378203ea35fa9bca6726dcf0010de081fb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,036bc5661060702e798d215e81bb46da530965b3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,01f3ce411711c2c919598ea25320a5a48f71edbc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,f0745496f7c171271cafd9457df3b914a483ddeb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,ae5347f3db1782c6118f6cc0d9fd8b1d43397db3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,2995ccec260caa9e85b3301a4aba1e66ed80ad74)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.10.261)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.15.212)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.1.178)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.6.145)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.97)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.40)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.1.5)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.261,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.212,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.178,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.145,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.97,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.40,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.5,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc2,*]"}}], "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": "generic", "value": "[5.10.261,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.212,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.178,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.145,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.97,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.40,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.5,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc2,*]"}}], "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": "2026-08-15T09:45:03.367537+00:00", "updated": "2026-08-18T00:30:05.334324+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}