{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-48872",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-07-16T11:38:08.921Z",
        "datePublished": "2024-08-21T06:10:02.954Z",
        "dateUpdated": "2026-05-11T18:48:47.585Z"
    },
    "containers": {
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            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T18:48:47.585Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix use-after-free race condition for maps\n\nIt is possible that in between calling fastrpc_map_get() until\nmap->fl->lock is taken in fastrpc_free_map(), another thread can call\nfastrpc_map_lookup() and get a reference to a map that is about to be\ndeleted.\n\nRewrite fastrpc_map_get() to only increase the reference count of a map\nif it's non-zero. Propagate this to callers so they can know if a map is\nabout to be deleted.\n\nFixes this warning:\nrefcount_t: addition on 0; use-after-free.\nWARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate\n...\nCall trace:\n refcount_warn_saturate\n [fastrpc_map_get inlined]\n [fastrpc_map_lookup inlined]\n fastrpc_map_create\n fastrpc_internal_invoke\n fastrpc_device_ioctl\n __arm64_sys_ioctl\n invoke_syscall"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/misc/fastrpc.c"
                    ],
                    "versions": [
                        {
                            "version": "c68cfb718c8f97b7f7a50ed66be5feb42d0c8988",
                            "lessThan": "556dfdb226ce1e5231d8836159b23f8bb0395bf4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c68cfb718c8f97b7f7a50ed66be5feb42d0c8988",
                            "lessThan": "b171d0d2cf1b8387c72c8d325c5d5746fa271e39",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c68cfb718c8f97b7f7a50ed66be5feb42d0c8988",
                            "lessThan": "61a0890cb95afec5c8a2f4a879de2b6220984ef1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
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                            "lessThan": "079c78c68714f7d8d58e66c477b0243b31806907",
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                            "lessThan": "96b328d119eca7563c1edcc4e1039a62e6370ecb",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/misc/fastrpc.c"
                    ],
                    "versions": [
                        {
                            "version": "5.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.230",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.165",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.90",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.8",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.2",
                            "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": "5.1",
                                    "versionEndExcluding": "5.4.230"
                                },
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionStartIncluding": "5.1",
                                    "versionEndExcluding": "5.15.90"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.1",
                                    "versionEndExcluding": "6.1.8"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.1",
                                    "versionEndExcluding": "6.2"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/556dfdb226ce1e5231d8836159b23f8bb0395bf4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b171d0d2cf1b8387c72c8d325c5d5746fa271e39"
                },
                {
                    "url": "https://git.kernel.org/stable/c/61a0890cb95afec5c8a2f4a879de2b6220984ef1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/079c78c68714f7d8d58e66c477b0243b31806907"
                },
                {
                    "url": "https://git.kernel.org/stable/c/96b328d119eca7563c1edcc4e1039a62e6370ecb"
                }
            ],
            "title": "misc: fastrpc: Fix use-after-free race condition for maps",
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