erofs: skip sufficiently large global buffers when resizing
In the Linux kernel, the following vulnerability has been resolved: erofs: skip sufficiently large global buffers when resizing z_erofs_gbuf_nrpages is advanced only after every global buffer has been grown. If a resize fails after some buffers were enlarged, a retry revisits those enlarged buffers. Retrying the same size then returns -ENOMEM because alloc_pages_bulk() has no pages to add and the unchanged return value is treated as a failure. Retrying an intermediate size allocates a temporary pointer array smaller than gbuf->nrpages and copies more existing pointers than the array can hold. Skip buffers that already satisfy the request. Once all remaining buffers have caught up, advancing z_erofs_gbuf_nrpages again describes the guaranteed minimum size across the pool.
CVE-2026-89602
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-2026-89602
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": "d6db47e571dcaecaeaafa8840d00ae849ae3907b",
"lessThan": "3fbdd15d5830f52661eb78be95058d101cb0c2cb",
"versionType": "git"
},
{
"status": "affected",
"version": "d6db47e571dcaecaeaafa8840d00ae849ae3907b",
"lessThan": "7267557ce98ccd07faaf3bc86382448950cc4ff6",
"versionType": "git"
},
{
"status": "affected",
"version": "d6db47e571dcaecaeaafa8840d00ae849ae3907b",
"lessThan": "7f4a89d4f0d6acaf4b756c31de48f2109a257b70",
"versionType": "git"
},
{
"status": "affected",
"version": "d6db47e571dcaecaeaafa8840d00ae849ae3907b",
"lessThan": "a7d097cf01301c5da37927c8f26123d006f0fd8a",
"versionType": "git"
}
],
"programFiles": [
"fs/erofs/zutil.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/erofs/zutil.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89602
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #35109 · Revision 1
- Added to Heist Feed
- Publisher date