{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50631",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-08T23:57:43.369Z",
        "datePublished": "2025-12-08T23:59:57.228Z",
        "dateUpdated": "2026-05-11T19:22:35.051Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:22:35.051Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRISC-V: kexec: Fix memory leak of fdt buffer\n\nThis is reported by kmemleak detector:\n\nunreferenced object 0xff60000082864000 (size 9588):\n  comm \"kexec\", pid 146, jiffies 4294900634 (age 64.788s)\n  hex dump (first 32 bytes):\n    d0 0d fe ed 00 00 12 ed 00 00 00 48 00 00 11 40  ...........H...@\n    00 00 00 28 00 00 00 11 00 00 00 02 00 00 00 00  ...(............\n  backtrace:\n    [<00000000f95b17c4>] kmemleak_alloc+0x34/0x3e\n    [<00000000b9ec8e3e>] kmalloc_order+0x9c/0xc4\n    [<00000000a95cf02e>] kmalloc_order_trace+0x34/0xb6\n    [<00000000f01e68b4>] __kmalloc+0x5c2/0x62a\n    [<000000002bd497b2>] kvmalloc_node+0x66/0xd6\n    [<00000000906542fa>] of_kexec_alloc_and_setup_fdt+0xa6/0x6ea\n    [<00000000e1166bde>] elf_kexec_load+0x206/0x4ec\n    [<0000000036548e09>] kexec_image_load_default+0x40/0x4c\n    [<0000000079fbe1b4>] sys_kexec_file_load+0x1c4/0x322\n    [<0000000040c62c03>] ret_from_syscall+0x0/0x2\n\nIn elf_kexec_load(), a buffer is allocated via kvmalloc() to store fdt.\nWhile it's not freed back to system when kexec kernel is reloaded or\nunloaded.  Then memory leak is caused.  Fix it by introducing riscv\nspecific function arch_kimage_file_post_load_cleanup(), and freeing the\nbuffer there."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/riscv/include/asm/kexec.h",
                        "arch/riscv/kernel/elf_kexec.c"
                    ],
                    "versions": [
                        {
                            "version": "6261586e0c91db14c34f894f4bc48f2300cff1d4",
                            "lessThan": "c66ad198b6497dee8f45d7ed5c03629c4525c7d0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6261586e0c91db14c34f894f4bc48f2300cff1d4",
                            "lessThan": "dc387c34d8dd10b02a333df098f8fd9bba177a45",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6261586e0c91db14c34f894f4bc48f2300cff1d4",
                            "lessThan": "96df59b1ae23f5c11698c3c2159aeb2ecd4944a4",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "arch/riscv/include/asm/kexec.h",
                        "arch/riscv/kernel/elf_kexec.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.18",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.4",
                            "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": "5.19",
                                    "versionEndExcluding": "6.0.18"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.1.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19",
                                    "versionEndExcluding": "6.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c66ad198b6497dee8f45d7ed5c03629c4525c7d0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dc387c34d8dd10b02a333df098f8fd9bba177a45"
                },
                {
                    "url": "https://git.kernel.org/stable/c/96df59b1ae23f5c11698c3c2159aeb2ecd4944a4"
                }
            ],
            "title": "RISC-V: kexec: Fix memory leak of fdt buffer",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}