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arm64: kexec_file: Fix elf_headers memory leak in retry loop

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A retry allocates new elf headers and overwrites image->elf_headers,
leaking the previous buffer.

Free it before assigning.

Cc: Will Deacon <will@kernel.org>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Breno Leitao <leitao@debian.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yeoreum Yun <yeoreum.yun@arm.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 108aa50365 ("arm64: kexec_file: try more regions if loading segments fails")
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
[catalin.marinas@arm.com: drop the redundant NULL check before vfree()]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Jinjie Ruan 2026-11-05 20:57:24 +08:00 committed by Catalin Marinas
parent b0958b1397
commit ac302aea3d
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/kernel/machine_kexec_file.c
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@ -112,6 +112,8 @@ int load_other_segments(struct kimage *image,
vfree(headers);
goto out_err;
}
vfree(image->elf_headers);
image->elf_headers = headers;
image->elf_load_addr = kbuf.mem;
image->elf_headers_sz = headers_sz;