{"id":"CVE-2026-31746","title":"s390/zcrypt: Fix memory leak with CCA cards used as accelerator","summary":"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 request…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 919b3885c293057061af32dfeb0e20bba4f7a378 < 1650268579e1113b30402dbcca4dba6589a0fccf","Linux >= 57db62a130ce69e6f3a870cf1119d8f860391f97 < 586222c37d4027dbf60a604fbe820184fee7c1c9","Linux >= 57db62a130ce69e6f3a870cf1119d8f860391f97 < ace37bfec3822033e59fff390f2ff99fc96ebe4f","Linux >= 57db62a130ce69e6f3a870cf1119d8f860391f97 < c8d46f17c2fc7d25c18e60c008928aecab26184d","Linux 6.16"],"published":"2026-05-01","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:39:47.494Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-31746","references":[{"url":"https://git.kernel.org/stable/c/1650268579e1113b30402dbcca4dba6589a0fccf"},{"url":"https://git.kernel.org/stable/c/586222c37d4027dbf60a604fbe820184fee7c1c9"},{"url":"https://git.kernel.org/stable/c/ace37bfec3822033e59fff390f2ff99fc96ebe4f"},{"url":"https://git.kernel.org/stable/c/c8d46f17c2fc7d25c18e60c008928aecab26184d"}],"tags":["cve.org"],"epss":0.0016,"epssPercentile":0.04769,"ingestedAt":"2026-10-21T12:48:53.656Z","slug":"CVE-2026-31746","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 919b3885c293057061af32dfeb0e20bba4f7a378 < 1650268579e1113b30402dbcca4dba6589a0fccf`\n- `Linux >= 57db62a130ce69e6f3a870cf1119d8f860391f97 < 586222c37d4027dbf60a604fbe820184fee7c1c9`\n- `Linux >= 57db62a130ce69e6f3a870cf1119d8f860391f97 < ace37bfec3822033e59fff390f2ff99fc96ebe4f`\n- `Linux >= 57db62a130ce69e6f3a870cf1119d8f860391f97 < c8d46f17c2fc7d25c18e60c008928aecab26184d`\n- `Linux 6.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}