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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-08-29 09:15:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-08-29 09:15:46 -0700 |
| commit | fb679c832b6497f19fffb8274c419783909c0912 (patch) | |
| tree | 9ac278d67ce95ba7fe455e5ed8f053f7d7d2bca8 /fs/efivarfs/super.c | |
| parent | 2575e638e2d9c70971e5232398ca22afa6f06293 (diff) | |
| parent | a6358f8cf64850f3f27857b8ed8c1b08cfc4685c (diff) | |
Merge tag 'efi-fixes-for-v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
- Assorted fixes for the OP-TEE based pseudo-EFI variable store
- Fix for an OOB access when looking up the same non-existing efivarfs
entry multiple times in parallel
* tag 'efi-fixes-for-v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare
efi: stmm: Drop unneeded null pointer check
efi: stmm: Drop unused EFI error from setup_mm_hdr arguments
efi: stmm: Do not return EFI_OUT_OF_RESOURCES on internal errors
efi: stmm: Fix incorrect buffer allocation method
Diffstat (limited to 'fs/efivarfs/super.c')
| -rw-r--r-- | fs/efivarfs/super.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c index c4a139911356..4bb4002e3cdf 100644 --- a/fs/efivarfs/super.c +++ b/fs/efivarfs/super.c @@ -152,6 +152,10 @@ static int efivarfs_d_compare(const struct dentry *dentry, { int guid = len - EFI_VARIABLE_GUID_LEN; + /* Parallel lookups may produce a temporary invalid filename */ + if (guid <= 0) + return 1; + if (name->len != len) return 1; |