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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2024-37078
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-06-25 15:15:12 UTC
Updated2026-08-04 11:18:38 UTC
DescriptionIn 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 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.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 95f6f81e50d858a7c9aa7c795ec14a0ac3819118 git Not specified
CNA Linux Linux affected 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 a75b8f493dfc48aa38c518430bd9e03b53bffebe git Not specified
CNA Linux Linux affected 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 0ecfe3a92869a59668d27228dabbd7965e83567f git Not specified
CNA Linux Linux affected 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 33900d7eae616647e179eee1c66ebe654ee39627 git Not specified
CNA Linux Linux affected 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 271dcd977ccda8c7a26e360425ae7b4db7d2ecc0 git Not specified
CNA Linux Linux affected 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 614d397be0cf43412b3f94a0f6460eddced8ce92 git Not specified
CNA Linux Linux affected 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 1f3bff69f1214fe03a02bc650d5bbfaa6e65ae7d git Not specified
CNA Linux Linux affected 9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 a4ca369ca221bb7e06c725792ac107f0e48e82e7 git Not specified
CNA Linux Linux affected 2.6.30 Not specified
CNA Linux Linux unaffected 2.6.30 semver Not specified
CNA Linux Linux unaffected 4.19.317 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.279 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.221 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.162 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.95 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.35 6.6.* semver Not specified
CNA Linux Linux unaffected 6.9.5 6.9.* semver Not specified
CNA Linux Linux unaffected 6.10 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a4ca369ca221bb7e06c725792ac107f0e48e82e7 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/0ecfe3a92869a59668d27228dabbd7965e83567f af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/1f3bff69f1214fe03a02bc650d5bbfaa6e65ae7d af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/271dcd977ccda8c7a26e360425ae7b4db7d2ecc0 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/614d397be0cf43412b3f94a0f6460eddced8ce92 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/95f6f81e50d858a7c9aa7c795ec14a0ac3819118 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/a75b8f493dfc48aa38c518430bd9e03b53bffebe af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/33900d7eae616647e179eee1c66ebe654ee39627 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/01/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
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