# CVE-2022-50765: linux: In the Linux kernel, the following vulnerability has been resolved:  RISC-V: kexec: Fix memory leak of elf header buf...

CVE-2022-50765 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50765, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-50765
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 24, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  RISC-V: kexec: Fix memory leak of elf header buffer  This is reported by kmemleak detector:  unreferenced object 0xff2000000403d000 (size 4096):   comm "kexec", pid 146, jiffies 4294900633 (age 64.792s)   hex dump (first 32 bytes):     7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00  .ELF............     04 00 f3 00 01 00 00 00 00 00 00 00 00 00 00 00  ................   backtrace:     [<00000000566ca97c>] kmemleak_vmalloc+0x3c/0xbe     [<00000000979283d8>] __vmalloc_node_range+0x3ac/0x560     [<00000000b4b3712a>] __vmalloc_node+0x56/0x62     [<00000000854f75e2>] vzalloc+0x2c/0x34     [<00000000e9a00db9>] crash_prepare_elf64_headers+0x80/0x30c     [<0000000067e8bf48>] elf_kexec_load+0x3e8/0x4ec     [<0000000036548e09>] kexec_image_load_default+0x40/0x4c     [<0000000079fbe1b4>] sys_kexec_file_load+0x1c4/0x322     [<0000000040c62c03>] ret_from_syscall+0x0/0x2  In elf_kexec_load(), a buffer is allocated via vzalloc() to store elf headers.  While it's not freed back to system when kdump kernel is reloaded or unloaded, or when image->elf_header is successfully set and then fails to load kdump kernel for some reason. Fix it by freeing the buffer in arch_kimage_file_post_load_cleanup().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50765](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50765.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50765](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50765.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50765](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50765.md) | Dec 24, 2025 |

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