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libblkid: befs: fix underflow
authorMilan Broz <gmazyland@gmail.com>
Sat, 19 Apr 2025 13:54:40 +0000 (15:54 +0200)
committerKarel Zak <kzak@redhat.com>
Tue, 22 Apr 2025 10:27:10 +0000 (12:27 +0200)
commitd828cc20fbbc8daec3e046a6ce2f877fae3d31d9
tree49a9eb53782f381916f2e1bd629bac93ea634f87tree | snapshot
parent1f7a5b3c3cc1ad1ab1b72e68d0ae49cb171c5c45commit | diff
libblkid: befs: fix underflow

Fix segfault caused by underflow while parsing a corrupted metadata.

Found by OSS-Fuzz by cryptsetup project fuzzers (issue 411003898).

Signed-off-by: Milan Broz <gmazyland@gmail.com>
(cherry picked from commit 588eed1a1de13150750e8a50d855001b27e07357)
libblkid/src/superblocks/befs.c diff | blob | blame | history
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