{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23297",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.993Z",
        "datePublished": "2026-03-25T10:26:54.156Z",
        "dateUpdated": "2026-05-11T22:04:09.525Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:04:09.525Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: Fix cred ref leak in nfsd_nl_threads_set_doit().\n\nsyzbot reported memory leak of struct cred. [0]\n\nnfsd_nl_threads_set_doit() passes get_current_cred() to\nnfsd_svc(), but put_cred() is not called after that.\n\nThe cred is finally passed down to _svc_xprt_create(),\nwhich calls get_cred() with the cred for struct svc_xprt.\n\nThe ownership of the refcount by get_current_cred() is not\ntransferred to anywhere and is just leaked.\n\nnfsd_svc() is also called from write_threads(), but it does\nnot bump file->f_cred there.\n\nnfsd_nl_threads_set_doit() is called from sendmsg() and\ncurrent->cred does not go away.\n\nLet's use current_cred() in nfsd_nl_threads_set_doit().\n\n[0]:\nBUG: memory leak\nunreferenced object 0xffff888108b89480 (size 184):\n  comm \"syz-executor\", pid 5994, jiffies 4294943386\n  hex dump (first 32 bytes):\n    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace (crc 369454a7):\n    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]\n    slab_post_alloc_hook mm/slub.c:4958 [inline]\n    slab_alloc_node mm/slub.c:5263 [inline]\n    kmem_cache_alloc_noprof+0x412/0x580 mm/slub.c:5270\n    prepare_creds+0x22/0x600 kernel/cred.c:185\n    copy_creds+0x44/0x290 kernel/cred.c:286\n    copy_process+0x7a7/0x2870 kernel/fork.c:2086\n    kernel_clone+0xac/0x6e0 kernel/fork.c:2651\n    __do_sys_clone+0x7f/0xb0 kernel/fork.c:2792\n    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n    do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94\n    entry_SYSCALL_64_after_hwframe+0x77/0x7f"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nfsd/nfsctl.c"
                    ],
                    "versions": [
                        {
                            "version": "924f4fb003ba114c60b3c07a011dcd86a8956cd1",
                            "lessThan": "41170716421c25cd20b39e83f0e0762e212b377b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "924f4fb003ba114c60b3c07a011dcd86a8956cd1",
                            "lessThan": "27c13c5bb0948e3b5c64e59f8a903231896fab9b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "924f4fb003ba114c60b3c07a011dcd86a8956cd1",
                            "lessThan": "a3f88e3e18b51a7f654189189c762ebcdeaa7e29",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "924f4fb003ba114c60b3c07a011dcd86a8956cd1",
                            "lessThan": "1cb968a2013ffa8112d52ebe605009ea1c6a582c",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nfsd/nfsctl.c"
                    ],
                    "versions": [
                        {
                            "version": "6.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.77",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.17",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.7",
                            "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": "6.10",
                                    "versionEndExcluding": "6.12.77"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.18.17"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.19.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/41170716421c25cd20b39e83f0e0762e212b377b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/27c13c5bb0948e3b5c64e59f8a903231896fab9b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a3f88e3e18b51a7f654189189c762ebcdeaa7e29"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1cb968a2013ffa8112d52ebe605009ea1c6a582c"
                }
            ],
            "title": "nfsd: Fix cred ref leak in nfsd_nl_threads_set_doit().",
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}