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EFI fix for v7.0 #3

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Fix a potential buffer overrun issue introduced by the preceding fix for
 EFI boot services region reservations on x86
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Merge tag 'efi-fixes-for-v7.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI fix from Ard Biesheuvel:
 "Fix a potential buffer overrun issue introduced by the previous fix
  for EFI boot services region reservations on x86"

* tag 'efi-fixes-for-v7.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  x86/efi: efi_unmap_boot_services: fix calculation of ranges_to_free size
This commit is contained in:
Linus Torvalds 2026-03-27 15:55:25 -07:00
commit 56bea42415
1 changed files with 1 additions and 1 deletions
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2
arch/x86/platform/efi/quirks.c
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@ -424,7 +424,7 @@ void __init efi_unmap_boot_services(void)
if (efi_enabled(EFI_DBG))
return;
sz = sizeof(*ranges_to_free) * efi.memmap.nr_map + 1;
sz = sizeof(*ranges_to_free) * (efi.memmap.nr_map + 1);
ranges_to_free = kzalloc(sz, GFP_KERNEL);
if (!ranges_to_free) {
pr_err("Failed to allocate storage for freeable EFI regions\n");