{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49256",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T01:49:39.296Z",
        "datePublished": "2025-02-26T01:56:10.599Z",
        "dateUpdated": "2026-05-11T18:56:11.419Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T18:56:11.419Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatch_queue: Actually free the watch\n\nfree_watch() does everything barring actually freeing the watch object.  Fix\nthis by adding the missing kfree.\n\nkmemleak produces a report something like the following.  Note that as an\naddress can be seen in the first word, the watch would appear to have gone\nthrough call_rcu().\n\nBUG: memory leak\nunreferenced object 0xffff88810ce4a200 (size 96):\n  comm \"syz-executor352\", pid 3605, jiffies 4294947473 (age 13.720s)\n  hex dump (first 32 bytes):\n    e0 82 48 0d 81 88 ff ff 00 00 00 00 00 00 00 00  ..H.............\n    80 a2 e4 0c 81 88 ff ff 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [<ffffffff8214e6cc>] kmalloc include/linux/slab.h:581 [inline]\n    [<ffffffff8214e6cc>] kzalloc include/linux/slab.h:714 [inline]\n    [<ffffffff8214e6cc>] keyctl_watch_key+0xec/0x2e0 security/keys/keyctl.c:1800\n    [<ffffffff8214ec84>] __do_sys_keyctl+0x3c4/0x490 security/keys/keyctl.c:2016\n    [<ffffffff84493a25>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n    [<ffffffff84493a25>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n    [<ffffffff84600068>] entry_SYSCALL_64_after_hwframe+0x44/0xae"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/watch_queue.c"
                    ],
                    "versions": [
                        {
                            "version": "c73be61cede5882f9605a852414db559c0ebedfd",
                            "lessThan": "9d92be1a09fbb3dd65600dbfe7eedb40e7228e4b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c73be61cede5882f9605a852414db559c0ebedfd",
                            "lessThan": "f69aecb49968e14196366bbe896eab0a904229f5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c73be61cede5882f9605a852414db559c0ebedfd",
                            "lessThan": "7e8c9b0df07a77f0d072603b8ced2677e30e1893",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c73be61cede5882f9605a852414db559c0ebedfd",
                            "lessThan": "31824613a42aacdcbeb325bf07a1c8247a11ebe2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c73be61cede5882f9605a852414db559c0ebedfd",
                            "lessThan": "3d8dcf278b1ee1eff1e90be848fa2237db4c07a7",
                            "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/watch_queue.c"
                    ],
                    "versions": [
                        {
                            "version": "5.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.110",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.33",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.16.19",
                            "lessThanOrEqual": "5.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17.2",
                            "lessThanOrEqual": "5.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18",
                            "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": "5.8",
                                    "versionEndExcluding": "5.10.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.15.33"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.16.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.17.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/9d92be1a09fbb3dd65600dbfe7eedb40e7228e4b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f69aecb49968e14196366bbe896eab0a904229f5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7e8c9b0df07a77f0d072603b8ced2677e30e1893"
                },
                {
                    "url": "https://git.kernel.org/stable/c/31824613a42aacdcbeb325bf07a1c8247a11ebe2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3d8dcf278b1ee1eff1e90be848fa2237db4c07a7"
                }
            ],
            "title": "watch_queue: Actually free the watch",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}