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romfs: reject non-advancing nextfh offsets in romfs_lookup() and romfs_readdir() - #2628
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…s_readdir() In romfs_lookup() and romfs_readdir() (fs/romfs/super.c), verify that the masked nextfh offset strictly advances (or is 0 to terminate the directory) so a self-referential or backward nextfh link in a corrupted RomFS image cannot cause an infinite loop in the kernel. Fixes: da4458b ("NOMMU: Make it possible for RomFS to use MTD devices directly") 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=1169474
Submitter: Hui Peng
Version: 1
Patches: 1/1
Message-ID:
<20260919222607.3794829-1-benquike@gmail.com>Base: vfs.base.ci
Lore: https://lore.kernel.org/linux-fsdevel/20260919222607.3794829-1-benquike@gmail.com
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