nilfs2: fix BUG in nilfs_copy_dirty_pages() on dirty state mismatch
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix BUG in nilfs_copy_dirty_pages() on dirty state mismatch Syzbot reported a kernel BUG triggered within nilfs_copy_dirty_pages(), which copies dirty DAT file folios/pages to its shadow page cache. The BUG occurs when a retrieved dirty folio/page unexpectedly loses its 'dirty' status. This issue arises because, since the commit referenced below, the 'dirty' flag of a folio/page can be cleared asynchronously after the filesystem detects metadata corruption and transitions to read-only mode. Resolve the issue by returning an -EROFS error if the filesystem has transitioned to read-only mode. Also change the behavior to issue a kernel warning only once instead of triggering a kernel BUG when this unexpected 'dirty' state is detected while the filesystem is not in read-only mode.
CVE-2026-90418
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90418
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
"lessThan": "5166a21b12f549774f2983fa86d2526ea9e66ace",
"versionType": "git"
},
{
"status": "affected",
"version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
"lessThan": "4e1f21e7540b25d83f86b50780836ed7d2afcc93",
"versionType": "git"
},
{
"status": "affected",
"version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
"lessThan": "3904fb0ee741ebbbc27ec8f50a9bb6cd31e8af05",
"versionType": "git"
},
{
"status": "affected",
"version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
"lessThan": "f181155baf0c93a74ebe804c6cecbe970e78ee9e",
"versionType": "git"
},
{
"status": "affected",
"version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
"lessThan": "66f4ad3ce158902e5f98afea93189972ed8750c2",
"versionType": "git"
}
],
"programFiles": [
"fs/nilfs2/page.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/nilfs2/page.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90418
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36737 · Revision 1
- Added to Heist Feed
- Publisher date