CVE-2024-37078

Source
https://nvd.nist.gov/vuln/detail/CVE-2024-37078
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-37078.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-37078
Downstream
Related
Published
2024-06-25T15:15:12Z
Modified
2025-09-17T17:03:29Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
[none]
Details

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 (_foliostart_writeback in the log below):

kernel BUG at mm/page-writeback.c:3070! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI ... RIP: 0010:_foliostartwriteback+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> nilfssegctordoconstruct+0x4654/0x69d0 [nilfs2] nilfssegctorconstruct+0x181/0x6b0 [nilfs2] nilfssegctorthread+0x548/0x11c0 [nilfs2] kthread+0x2f0/0x390 retfromfork+0x4b/0x80 retfromfork_asm+0x1a/0x30 </TASK>

This is because when the log writer starts a writeback for segment summary blocks or a super root block that use the backing device's page cache, it does not wait for the ongoing folio/page writeback, resulting in an inconsistent writeback state.

Fix this issue by waiting for ongoing writebacks when putting folios/pages on the backing device into writeback state.

References

Affected packages