CVE-2025-40190
中文标题:
（暂无数据）
英文标题:
ext4: guard against EA inode refcount underflow in xattr update
漏洞描述
中文描述:
（暂无数据）
英文描述:
In the Linux kernel, the following vulnerability has been resolved: ext4: guard against EA inode refcount underflow in xattr update syzkaller found a path where ext4_xattr_inode_update_ref() reads an EA inode refcount that is already <= 0 and then applies ref_change (often -1). That lets the refcount underflow and we proceed with a bogus value, triggering errors like: EXT4-fs error: EA inode <n> ref underflow: ref_count=-1 ref_change=-1 EXT4-fs warning: ea_inode dec ref err=-117 Make the invariant explicit: if the current refcount is non-positive, treat this as on-disk corruption, emit ext4_error_inode(), and fail the operation with -EFSCORRUPTED instead of updating the refcount. Delete the WARN_ONCE() as negative refcounts are now impossible; keep error reporting in ext4_error_inode(). This prevents the underflow and the follow-on orphan/cleanup churn.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Linux | Linux | - | < ea39e712c2f5ae148ee5515798ae03523673e002 | - |
cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
CVSS评分详情
NOT_EXTRACTED
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2025-40190 |
2025-12-03 03:24:31 | 2026-01-12 02:11:44 |
| NVD | nvd_CVE-2025-40190 |
2025-11-15 03:18:45 | 2026-01-12 02:27:46 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 9 -> 1
- data_sources: ['cve'] -> ['cve', 'nvd']