{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-46106",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.097Z",
        "datePublished": "2026-05-28T09:35:11.034Z",
        "dateUpdated": "2026-06-14T17:54:53.367Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-14T17:54:53.367Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neventfs: Hold eventfs_mutex and SRCU when remount walks events\n\nCommit 340f0c7067a9 (\"eventfs: Update all the eventfs_inodes from the\nevents descriptor\") had eventfs_set_attrs() recurse through ei->children\non remount.  The walk only holds the rcu_read_lock() taken by\ntracefs_apply_options() over tracefs_inodes, which is wrong:\n\n  - list_for_each_entry over ei->children races with the list_del_rcu()\n    in eventfs_remove_rec() -- LIST_POISON1 deref, same shape as\n    d2603279c7d6.\n  - eventfs_inodes are freed via call_srcu(&eventfs_srcu, ...).\n    rcu_read_lock() does not extend an SRCU grace period, so ti->private\n    can be reclaimed under the walk.\n  - The writes to ei->attr race with eventfs_set_attr(), which holds\n    eventfs_mutex.\n\nReproducer:\n\n  while :; do mount -o remount,uid=$((RANDOM%1000)) /sys/kernel/tracing; done &\n  while :; do\n      echo \"p:kp submit_bio\" > /sys/kernel/tracing/kprobe_events\n      echo > /sys/kernel/tracing/kprobe_events\n  done\n\nWrap the events portion of tracefs_apply_options() in\neventfs_remount_lock()/_unlock() that take eventfs_mutex and\nsrcu_read_lock(&eventfs_srcu).  eventfs_set_attrs() doesn't sleep so the\nnested rcu_read_lock() is fine; lockdep_assert_held() pins the contract.\n\nComment in tracefs_drop_inode() said \"RCU cycle\" -- it is SRCU."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/tracefs/event_inode.c",
                        "fs/tracefs/inode.c",
                        "fs/tracefs/internal.h"
                    ],
                    "versions": [
                        {
                            "version": "7ec535ed8724d18ae4e714d2277a5b89450659d2",
                            "lessThan": "ae9cd0b46b1890040006a2fc5e905c5d6053fd02",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "340f0c7067a95281ad13734f8225f49c6cf52067",
                            "lessThan": "44e64d8a432837308f4dda3ffe819f1ec092a0ba",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "340f0c7067a95281ad13734f8225f49c6cf52067",
                            "lessThan": "52b109f1b875b912d4ab2c5fdd8c322d47119d9b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "340f0c7067a95281ad13734f8225f49c6cf52067",
                            "lessThan": "ed2ad73bcb0a7a6cc934097d4853b6d5124c317e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "340f0c7067a95281ad13734f8225f49c6cf52067",
                            "lessThan": "07004a8c4b572171934390148ee48c4175c77eed",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "99b86d85f7c73d676c50e8c35748f94dd41389da",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.6.35",
                            "lessThan": "6.6.140",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.9.6",
                            "lessThan": "6.10",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/tracefs/event_inode.c",
                        "fs/tracefs/inode.c",
                        "fs/tracefs/internal.h"
                    ],
                    "versions": [
                        {
                            "version": "6.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.10",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.140",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.88",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.30",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.7",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "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": "6.6.35",
                                    "versionEndExcluding": "6.6.140"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.12.88"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.18.30"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.0.7"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9.6"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ae9cd0b46b1890040006a2fc5e905c5d6053fd02"
                },
                {
                    "url": "https://git.kernel.org/stable/c/44e64d8a432837308f4dda3ffe819f1ec092a0ba"
                },
                {
                    "url": "https://git.kernel.org/stable/c/52b109f1b875b912d4ab2c5fdd8c322d47119d9b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ed2ad73bcb0a7a6cc934097d4853b6d5124c317e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/07004a8c4b572171934390148ee48c4175c77eed"
                }
            ],
            "title": "eventfs: Hold eventfs_mutex and SRCU when remount walks events",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}