{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74477",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.903Z",
        "datePublished": "2026-08-15T12:27:11.938Z",
        "dateUpdated": "2026-08-17T05:20:09.952Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:20:09.952Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuprobes: Fix NULL pointer dereference in hprobe_expire()\n\nForking a task that has a pending uretprobe can oops the kernel with a\nNULL pointer dereference in the clone() path:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000018\n  Oops: 0002 [#1] SMP NOPTI\n  RIP: 0010:hprobe_expire\n  CR2: 0000000000000018\n  Call Trace:\n   uprobe_copy_process\n   copy_process\n   kernel_clone\n   __x64_sys_clone\n   do_syscall_64\n   entry_SYSCALL_64_after_hwframe\n\nThis was found on real hosts on Meta fleet.\n\nI've got the impression that this is what is happening:\n\n  CPU 1                          CPU 2 (traced task)\n  -----                          -------------------\n                                 hit uprobe, prepare_uretprobe():\n                                   hprobe LEASED, refcount >= 1\n  uprobe_unregister()\n    put_uprobe(): refcount -> 0\n                                 fork() -> dup_utask()\n                                   hprobe_expire(hprobe, true)\n                                     try_get_uprobe() -> NULL\n                                     get_uprobe(NULL)   <-- Oops\n\nOnly take the extra reference when the uprobe is non-NULL; a NULL means\nit is gone and is the correct value to return."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/events/uprobes.c"
                    ],
                    "versions": [
                        {
                            "version": "dd1a7567784e2b1f80258be04f57bcfa82c997eb",
                            "lessThan": "3bd35a5e272a1b7a3fb43acad9bdc599281b13fa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dd1a7567784e2b1f80258be04f57bcfa82c997eb",
                            "lessThan": "06c275a6c0a953ef1d763d11a6891fcc69ae2ac0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "dd1a7567784e2b1f80258be04f57bcfa82c997eb",
                            "lessThan": "cc679d7a6303e84d769f2afcde1fc51c51f127cd",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/events/uprobes.c"
                    ],
                    "versions": [
                        {
                            "version": "6.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.44",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.8",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "6.13",
                                    "versionEndExcluding": "6.18.44"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "7.1.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/3bd35a5e272a1b7a3fb43acad9bdc599281b13fa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/06c275a6c0a953ef1d763d11a6891fcc69ae2ac0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cc679d7a6303e84d769f2afcde1fc51c51f127cd"
                }
            ],
            "title": "uprobes: Fix NULL pointer dereference in hprobe_expire()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}