CVE-2024-37078

/// Technical description

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

nilfs2: fix potential kernel bug due to lack of writeback flag waiting

Destructive writes to a block device on which nilfs2 is mounted can cause

a kernel bug in the folio/page writeback start routine or writeback end

routine (__folio_start_writeback in the log below):

kernel BUG at mm/page-writeback.c:3070!

Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI

...

RIP: 0010:__folio_start_writeback+0xbaa/0x10e0

Code: 25 ff 0f 00 00 0f 84 18 01 00 00 e8 40 ca c6 ff e9 17 f6 ff ff

e8 36 ca c6 ff 4c 89 f7 48 c7 c6 80 c0 12 84 e8 e7 b3 0f 00 90 <0f>

0b e8 1f ca c6 ff 4c 89 f7 48 c7 c6 a0 c6 12 84 e8 d0 b3 0f 00

...

Call Trace:

<TASK>

nilfs_segctor_do_construct+0x4654/0x69d0 [nilfs2]

nilfs_segctor_construct+0x181/0x6b0 [nilfs2]

nilfs_segctor_thread+0x548/0x11c0 [nilfs2]

kthread+0x2f0/0x390

ret_from_fork+0x4b/0x80

ret_from_fork_asm+0x1a/0x30

</TASK>

This is because when the log writer starts a w

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References