{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31746", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.138Z", "datePublished": "2026-05-01T14:14:40.196Z", "dateUpdated": "2026-05-01T14:14:40.196Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-01T14:14:40.196Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/zcrypt: Fix memory leak with CCA cards used as accelerator\n\nTests showed that there is a memory leak if CCA cards are used as\naccelerator for clear key RSA requests (ME and CRT). With the last\nrework for the memory allocation the AP messages are allocated by\nap_init_apmsg() but for some reason on two places (ME and CRT) the\nolder allocation was still in place. So the first allocation simple\nwas never freed."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/s390/crypto/zcrypt_msgtype6.c"], "versions": [{"version": "57db62a130ce69e6f3a870cf1119d8f860391f97", "lessThan": "586222c37d4027dbf60a604fbe820184fee7c1c9", "status": "affected", "versionType": "git"}, {"version": "57db62a130ce69e6f3a870cf1119d8f860391f97", "lessThan": "ace37bfec3822033e59fff390f2ff99fc96ebe4f", "status": "affected", "versionType": "git"}, {"version": "57db62a130ce69e6f3a870cf1119d8f860391f97", "lessThan": "c8d46f17c2fc7d25c18e60c008928aecab26184d", "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/crypto/zcrypt_msgtype6.c"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "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": "6.16", "versionEndExcluding": "6.18.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "6.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/586222c37d4027dbf60a604fbe820184fee7c1c9"}, {"url": "https://git.kernel.org/stable/c/ace37bfec3822033e59fff390f2ff99fc96ebe4f"}, {"url": "https://git.kernel.org/stable/c/c8d46f17c2fc7d25c18e60c008928aecab26184d"}], "title": "s390/zcrypt: Fix memory leak with CCA cards used as accelerator", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/zcrypt: Fix memory leak with CCA cards used as accelerator\n\nTests showed that there is a memory leak if CCA cards are used as\naccelerator for clear key RSA requests (ME and CRT). With the last\nrework for the memory allocation the AP messages are allocated by\nap_init_apmsg() but for some reason on two places (ME and CRT) the\nolder allocation was still in place. So the first allocation simple\nwas never freed."}], "id": "CVE-2026-31746", "lastModified": "2026-05-01T15:24:14.893", "metrics": {}, "published": "2026-05-01T15:16:37.363", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/586222c37d4027dbf60a604fbe820184fee7c1c9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ace37bfec3822033e59fff390f2ff99fc96ebe4f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c8d46f17c2fc7d25c18e60c008928aecab26184d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: s390/zcrypt: Fix memory leak with CCA cards used as accelerator", "id": "2464465", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464465"}, "csaw": false, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's s390/zcrypt component. When Common Cryptographic Architecture (CCA) cards are used as accelerators for clear key RSA requests, a memory leak occurs due to an unreleased memory allocation. Over time, this memory leak can lead to a denial of service (DoS) condition, impacting system stability and availability."], "name": "CVE-2026-31746", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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"}], "public_date": "2026-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31746\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31746\nhttps://lore.kernel.org/linux-cve-announce/2026050141-CVE-2026-31746-82d7@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[57db62a130ce69e6f3a870cf1119d8f860391f97,586222c37d4027dbf60a604fbe820184fee7c1c9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[57db62a130ce69e6f3a870cf1119d8f860391f97,ace37bfec3822033e59fff390f2ff99fc96ebe4f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[57db62a130ce69e6f3a870cf1119d8f860391f97,c8d46f17c2fc7d25c18e60c008928aecab26184d)"}}], "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": "6.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.22,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.12,6.20.0)"}}, {"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": "2026-05-01T21:00:08.402905+00:00", "updated": "2026-05-02T12:15:25.969008+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}