CVE-2026-93097

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93097", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.084Z", "datePublished": "2026-09-17T16:11:11.025Z", "dateUpdated": "2026-10-19T09:05:30.426Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:05:30.426Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/mbox: Break poison list loop on an empty payload\n\nA device that returns count == 0 with CXL_POISON_FLAG_MORE set on every\niteration never advances nr_records, so the max_errors guard never\ntrips and the do/while loops forever while holding poison.mutex. That\nhangs the sysfs-triggered scan thread and blocks all subsequent poison\noperations on the device. The existing \"Protect against an uncleared\n_FLAG_MORE\" guard was intended to bound a misbehaving device but does\nnot cover the count == 0 case.\n\nStop the loop on an empty payload so a malfunctioning or malicious\ndevice cannot wedge the poison scan."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/cxl/core/mbox.c"], "versions": [{"version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "lessThan": "86771c105293ca26bfcc320b4f60d32c137b54aa", "status": "affected", "versionType": "git"}, {"version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "lessThan": "42eab80981f4d2ac820e253e80ecf92f8cd91f69", "status": "affected", "versionType": "git"}, {"version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "lessThan": "6ad491cef1a812cf7b53aa769cd8869516c47362", "status": "affected", "versionType": "git"}, {"version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "lessThan": "e77594e0cea67ab1c2317a27aa77a744e26ad6a6", "status": "affected", "versionType": "git"}, {"version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "lessThan": "8b301c4afbce4bc3f94528441d8d5ce1366504ad", "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/cxl/core/mbox.c"], "versions": [{"version": "6.4", "status": "affected"}, {"version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.4", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/86771c105293ca26bfcc320b4f60d32c137b54aa"}, {"url": "https://git.kernel.org/stable/c/42eab80981f4d2ac820e253e80ecf92f8cd91f69"}, {"url": "https://git.kernel.org/stable/c/6ad491cef1a812cf7b53aa769cd8869516c47362"}, {"url": "https://git.kernel.org/stable/c/e77594e0cea67ab1c2317a27aa77a744e26ad6a6"}, {"url": "https://git.kernel.org/stable/c/8b301c4afbce4bc3f94528441d8d5ce1366504ad"}], "title": "cxl/mbox: Break poison list loop on an empty payload", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/cxl/core/mbox.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "86771c105293ca26bfcc320b4f60d32c137b54aa", "status": "affected", "version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "versionType": "git"}, {"lessThan": "42eab80981f4d2ac820e253e80ecf92f8cd91f69", "status": "affected", "version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "versionType": "git"}, {"lessThan": "6ad491cef1a812cf7b53aa769cd8869516c47362", "status": "affected", "version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "versionType": "git"}, {"lessThan": "e77594e0cea67ab1c2317a27aa77a744e26ad6a6", "status": "affected", "version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "versionType": "git"}, {"lessThan": "8b301c4afbce4bc3f94528441d8d5ce1366504ad", "status": "affected", "version": "ed83f7ca398b3798b82c1d5d1113011c0e5a2198", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/cxl/core/mbox.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.4"}, {"lessThan": "6.4", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\ncxl/mbox: Break poison list loop on an empty payload\n\nA device that returns count == 0 with CXL_POISON_FLAG_MORE set on every\niteration never advances nr_records, so the max_errors guard never\ntrips and the do/while loops forever while holding poison.mutex. That\nhangs the sysfs-triggered scan thread and blocks all subsequent poison\noperations on the device. The existing \"Protect against an uncleared\n_FLAG_MORE\" guard was intended to bound a misbehaving device but does\nnot cover the count == 0 case.\n\nStop the loop on an empty payload so a malfunctioning or malicious\ndevice cannot wedge the poison scan."}], "id": "CVE-2026-93097", "lastModified": "2026-10-19T10:16:59.503", "metrics": {}, "published": "2026-09-17T17:18:03.843", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/42eab80981f4d2ac820e253e80ecf92f8cd91f69"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6ad491cef1a812cf7b53aa769cd8869516c47362"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/86771c105293ca26bfcc320b4f60d32c137b54aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b301c4afbce4bc3f94528441d8d5ce1366504ad"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e77594e0cea67ab1c2317a27aa77a744e26ad6a6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed83f7ca398b3798b82c1d5d1113011c0e5a2198,86771c105293ca26bfcc320b4f60d32c137b54aa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed83f7ca398b3798b82c1d5d1113011c0e5a2198,42eab80981f4d2ac820e253e80ecf92f8cd91f69)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed83f7ca398b3798b82c1d5d1113011c0e5a2198,6ad491cef1a812cf7b53aa769cd8869516c47362)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed83f7ca398b3798b82c1d5d1113011c0e5a2198,e77594e0cea67ab1c2317a27aa77a744e26ad6a6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ed83f7ca398b3798b82c1d5d1113011c0e5a2198,8b301c4afbce4bc3f94528441d8d5ce1366504ad)"}}], "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": "6.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-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": "2026-09-19T07:30:17.072979+00:00", "updated": "2026-09-19T14:45:14.069184+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-674"]}