qnx4: validate xblk_num_xtnts and rootdir size in qnx4_block_map() and mount - #2631
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…d mount In qnx4_block_map() and qnx4_fill_super() (fs/qnx4/inode.c), check that xblk->xblk_num_xtnts is between 1 and QNX4_MAX_XTNTS_PER_XBLK (60), return 0 instead of (unsigned long)-EIO on error, and validate the root directory inode size on mount to prevent out-of-bounds reads past the 512-byte buffer_head. Fixes: 1da177e ("Linux-2.6.12-rc2") Assisted-by: LLM Signed-off-by: Hui Peng <benquike@gmail.com>
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Series: https://patchwork.kernel.org/project/linux-fsdevel/list/?series=1169477
Submitter: Hui Peng
Version: 1
Patches: 1/1
Message-ID:
<20260919222623.3797296-1-benquike@gmail.com>Base: vfs.base.ci
Lore: https://lore.kernel.org/linux-fsdevel/20260919222623.3797296-1-benquike@gmail.com
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