Vulnerability CVE-2024-35787

Vulnerability CVE-2024-35787

Published: 2024-05-17

Description:

In the Linux kernel, the following vulnerability has been resolved:

md/md-bitmap: fix incorrect usage for sb_index

Commit d7038f951828 ("md-bitmap: don't use ->index for pages backing the
bitmap file") removed page->index from bitmap code, but left wrong code
logic for clustered-md. current code never set slot offset for cluster
nodes, will sometimes cause crash in clustered env.

Call trace (partly):
md_bitmap_file_set_bit+0x110/0x1d8 [md_mod]
md_bitmap_startwrite+0x13c/0x240 [md_mod]
raid1_make_request+0x6b0/0x1c08 [raid1]
md_handle_request+0x1dc/0x368 [md_mod]
md_submit_bio+0x80/0xf8 [md_mod]
__submit_bio+0x178/0x300
submit_bio_noacct_nocheck+0x11c/0x338
submit_bio_noacct+0x134/0x614
submit_bio+0x28/0xdc
submit_bh_wbc+0x130/0x1cc
submit_bh+0x1c/0x28

References:

https://git.kernel.org/stable/c/736ad6c577a367834118f57417038d45bb5e0a31

https://git.kernel.org/stable/c/55e55eb65fd5e09faf5a0e49ffcdd37905aaf4da

https://git.kernel.org/stable/c/5a95815b17428ce2f56ec18da5e0d1b2a1a15240

https://git.kernel.org/stable/c/ecbd8ebb51bf7e4939d83b9e6022a55cac44ef06

Copyright 2026, cxsecurity.com