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befs: check NULL return from befs_bt_get_key() and fix keysize in befs_btree_read() - #2620
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…s_btree_read() Fix two issues in fs/befs/: 1. In befs_btree_find() and befs_btree_read() (fs/befs/btree.c), check for a NULL return from befs_bt_get_key() when a corrupted B+tree node has out-of-bounds key offsets or lengths. 2. In befs_btree_read() and befs_readdir() (fs/befs/linuxvfs.c), set keysize from the actual copied string length rather than the raw buffer size so uninitialized stack bytes are not passed to filldir(). 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=1169465
Submitter: Hui Peng
Version: 1
Patches: 1/1
Message-ID:
<20260919222555.3792599-1-benquike@gmail.com>Base: vfs.base.ci
Lore: https://lore.kernel.org/linux-fsdevel/20260919222555.3792599-1-benquike@gmail.com
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