hpfs: fix extended attribute bounds checks and get_indirect_ea() overflow - #2629
Open
vfsci-bot[bot] wants to merge 1 commit into
Open
vfsci-bot[bot] wants to merge 1 commit into
vfsci-bot[bot] wants to merge 1 commit into
Conversation
…flow Fix extended attribute parsing bugs in fs/hpfs/ea.c and fs/hpfs/map.c: 1. In get_indirect_ea(), reject negative or wrapping size values (such as size == 0xffffffff where size + 1 wraps to 0 and kmalloc(0) returns ZERO_SIZE_PTR). 2. In hpfs_ea_ext_remove(), hpfs_get_ea(), and hpfs_map_fnode(), validate EA entry sizes (`ea->namelen` and `ea_size(ea)`) against the buffer end and ensure `ea_size(ea) > 0` so malformed extended attributes cannot cause out-of-bounds reads or infinite loops. Fixes: 1da177e ("Linux-2.6.12-rc2") Assisted-by: LLM Signed-off-by: Hui Peng <benquike@gmail.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Series: https://patchwork.kernel.org/project/linux-fsdevel/list/?series=1169475
Submitter: Hui Peng
Version: 1
Patches: 1/1
Message-ID:
<20260919222608.3795070-1-benquike@gmail.com>Base: vfs.base.ci
Lore: https://lore.kernel.org/linux-fsdevel/20260919222608.3795070-1-benquike@gmail.com
Automated by ml2pr