CVE-2026-53125— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 6.17版本存在安全漏洞，该漏洞源于array_state=clear sysfs处理中存在死锁，可能导致递归锁定。
影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 9e59d609763f70a992a8f3808dabcce60f14eb5c< 62c44566da7493ee48ef17e8507bb798338a07cb |
affected |
9e59d609763f70a992a8f3808dabcce60f14eb5c< 92ad0ec509ffb188d8f849b63148664df37b4a52 |
affected | ||
9e59d609763f70a992a8f3808dabcce60f14eb5c< 2aa72276fab9851dbd59c2daeb4b590c5a113908 |
affected | ||
6.17 |
affected | ||
< 6.17 |
unaffected | ||
6.18.33≤ 6.18.* |
unaffected | ||
7.0.10≤ 7.0.* |
unaffected | ||
7.1≤ * |
unaffected |
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一、 漏洞 CVE-2026-53125 基础信息
漏洞信息
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Vulnerability Title
md: fix array_state=clear sysfs deadlock
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
md: fix array_state=clear sysfs deadlock
When "clear" is written to array_state, md_attr_store() breaks sysfs
active protection so the array can delete itself from its own sysfs
store method.
However, md_attr_store() currently drops the mddev reference before
calling sysfs_unbreak_active_protection(). Once do_md_stop(..., 0)
has made the mddev eligible for delayed deletion, the temporary
kobject reference taken by sysfs_break_active_protection() can become
the last kobject reference protecting the md kobject.
That allows sysfs_unbreak_active_protection() to drop the last
kobject reference from the current sysfs writer context. kobject
teardown then recurses into kernfs removal while the current sysfs
node is still being unwound, and lockdep reports recursive locking on
kn->active with kernfs_drain() in the call chain.
Reproducer on an existing level:
1. Create an md0 linear array and activate it:
mknod /dev/md0 b 9 0
echo none > /sys/block/md0/md/metadata_version
echo linear > /sys/block/md0/md/level
echo 1 > /sys/block/md0/md/raid_disks
echo "$(cat /sys/class/block/sdb/dev)" > /sys/block/md0/md/new_dev
echo "$(($(cat /sys/class/block/sdb/size) / 2))" > \
/sys/block/md0/md/dev-sdb/size
echo 0 > /sys/block/md0/md/dev-sdb/slot
echo active > /sys/block/md0/md/array_state
2. Wait briefly for the array to settle, then clear it:
sleep 2
echo clear > /sys/block/md0/md/array_state
The warning looks like:
WARNING: possible recursive locking detected
bash/588 is trying to acquire lock:
(kn->active#65) at __kernfs_remove+0x157/0x1d0
but task is already holding lock:
(kn->active#65) at sysfs_unbreak_active_protection+0x1f/0x40
...
Call Trace:
kernfs_drain
__kernfs_remove
kernfs_remove_by_name_ns
sysfs_remove_group
sysfs_remove_groups
__kobject_del
kobject_put
md_attr_store
kernfs_fop_write_iter
vfs_write
ksys_write
Restore active protection before mddev_put() so the extra sysfs
kobject reference is dropped while the mddev is still held alive. The
actual md kobject deletion is then deferred until after the sysfs
write path has fully returned.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 6.17版本存在安全漏洞，该漏洞源于array_state=clear sysfs处理中存在死锁，可能导致递归锁定。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-53125 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-53125 补丁与修复 (3)
同批安全公告 · Linux · 2026-06-24 · 共 219 条
| CVE-2026-53049 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52993 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52989 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52986 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52982 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53002 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53006 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53045 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53046 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52955 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53086 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53055 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52924 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53010 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52931 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53088 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52914 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52958 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-53043 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-52999 | 9.1 CRITICAL | Linux kernel 安全漏洞 |
显示前 20 条，共 219 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-53125
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