crypto: pcrypt – Fix handling of MAY_BACKLOG requests_CVE-2026-43493

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: pcrypt - Fix handling of MAY_BACKLOG requests\n\nMAY_BACKLOG requests can return EBUSY.  Handle them by checking\nfor that value and filtering out EINPROGRESS notifications.",
    "published": "2026-05-19T10:44:25.402Z",
    "modified": "2026-05-20T16:08:11.197Z",
    "type": "cve",
    "title": "crypto: pcrypt - Fix handling of MAY_BACKLOG requests",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/9f1cbca178c03188e201ed175251372149bb25f2\nhttps://git.kernel.org/stable/c/eb34e243df57e32f4c08fa191f3602ea19076276\nhttps://git.kernel.org/stable/c/77d55bc8675ee851ed639dc9be77325a8024cf67\nhttps://git.kernel.org/stable/c/46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a\nhttps://git.kernel.org/stable/c/915b692e6cb723aac658c25eb82c58fd81235110",
    "id": "CVE-2026-43493",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155\nLinux Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155\nLinux Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155\nLinux Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155\nLinux Linux 5a1436beec5744029f3ac90b6fe71a698dcd6155\nLinux Linux 2.6.34",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "5a1436beec5744029f3ac90b6fe71a698dcd6155",
    "vendor": "Linux",
    "ai_description": "A vulnerability in the Linux kernel's pcrypt module allows for potential unauthorized access and data tampering due to incorrect handling of MAY_BACKLOG requests.",
    "ai_severity": "Critical",
    "ai_vendor": "The Linux Foundation",
    "ai_product": "Linux Kernel",
    "ai_version": "2.6.34, 5a1436beec5744029f3ac90b6fe71a698dcd6155",
    "ai_score": 9.8
}