CVE-2025-40243 in Linux
Riassunto
di VulDB • 20/06/2026
Nel kernel Linux, è stata risolta la seguente vulnerabilità:
hfs: risoluzione del problema KMSAN uninit-value in hfs_find_set_zero_bits()
Il problema segnalato da syzbot in hfs_find_set_zero_bits():
===================================================== BUG: KMSAN: uninit-value in hfs_find_set_zero_bits+0x74d/0xb60 fs/hfs/bitmap.c:45 hfs_find_set_zero_bits+0x74d/0xb60 fs/hfs/bitmap.c:45 hfs_vbm_search_free+0x13c/0x5b0 fs/hfs/bitmap.c:151 hfs_extend_file+0x6a5/0x1b00 fs/hfs/extent.c:408 hfs_get_block+0x435/0x1150 fs/hfs/extent.c:353 __block_write_begin_int+0xa76/0x3030 fs/buffer.c:2151 block_write_begin fs/buffer.c:2262 [inline]
cont_write_begin+0x10e1/0x1bc0 fs/buffer.c:2601 hfs_write_begin+0x85/0x130 fs/hfs/inode.c:52 generic_perform_write+0x12e/0x240 fs/read_write.c:579 __generic_file_write_iter+0x178/0x2a0 fs/libfs.c:238 hfs_file_write_iter+0x130/0x230 fs/hfs/inode.c:100 vfs_writev fs/read_write.c:731 [inline]
do_write_iter+0x19e/0x280 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f
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