{"id":"CVE-2022-50765","summary":"RISC-V: kexec: Fix memory leak of elf header buffer","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRISC-V: kexec: Fix memory leak of elf header buffer\n\nThis is reported by kmemleak detector:\n\nunreferenced object 0xff2000000403d000 (size 4096):\n  comm \"kexec\", pid 146, jiffies 4294900633 (age 64.792s)\n  hex dump (first 32 bytes):\n    7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00  .ELF............\n    04 00 f3 00 01 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c00000000566ca97c\u003e] kmemleak_vmalloc+0x3c/0xbe\n    [\u003c00000000979283d8\u003e] __vmalloc_node_range+0x3ac/0x560\n    [\u003c00000000b4b3712a\u003e] __vmalloc_node+0x56/0x62\n    [\u003c00000000854f75e2\u003e] vzalloc+0x2c/0x34\n    [\u003c00000000e9a00db9\u003e] crash_prepare_elf64_headers+0x80/0x30c\n    [\u003c0000000067e8bf48\u003e] elf_kexec_load+0x3e8/0x4ec\n    [\u003c0000000036548e09\u003e] kexec_image_load_default+0x40/0x4c\n    [\u003c0000000079fbe1b4\u003e] sys_kexec_file_load+0x1c4/0x322\n    [\u003c0000000040c62c03\u003e] ret_from_syscall+0x0/0x2\n\nIn elf_kexec_load(), a buffer is allocated via vzalloc() to store elf\nheaders.  While it's not freed back to system when kdump kernel is\nreloaded or unloaded, or when image-\u003eelf_header is successfully set and\nthen fails to load kdump kernel for some reason. Fix it by freeing the\nbuffer in arch_kimage_file_post_load_cleanup().","modified":"2026-08-12T03:51:24.305631244Z","published":"2025-12-24T13:05:56.123Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50765.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/090bfcfc9f14d05154893c67eeaecc56e894fbae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cbc32023ddbdf4baa3d9dc513a2184a84080a5a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cdea2da6787583ecca43594132533a2ac8d7cd21"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50765.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50765"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8acea455fafaf2620b247de6c00774828b618a82"},{"fixed":"090bfcfc9f14d05154893c67eeaecc56e894fbae"},{"fixed":"cdea2da6787583ecca43594132533a2ac8d7cd21"},{"fixed":"cbc32023ddbdf4baa3d9dc513a2184a84080a5a2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50765.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.0"},{"fixed":"6.0.18"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.1.0"},{"fixed":"6.1.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50765.json"}}],"schema_version":"1.9.0"}