CVE-2025-37865— 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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mv88e6xxx驱动删除VLAN时未处理MST不支持情况，可能导致错误返回。
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 12
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | acaf4d2e36b3466334af4d3ee6ac254c3316165c< 35cde75c08a1fa1a5ac0467afe2709caceeef002 |
affected |
acaf4d2e36b3466334af4d3ee6ac254c3316165c< afae9087301471970254a9180e5a26d3d8e8af09 |
affected | ||
acaf4d2e36b3466334af4d3ee6ac254c3316165c< 9ee6d3a368ed34f2457863da3085c676e9e37a3d |
affected | ||
acaf4d2e36b3466334af4d3ee6ac254c3316165c< 9da4acbd60664271d34a627f7f63cd5bad8eba74 |
affected | ||
acaf4d2e36b3466334af4d3ee6ac254c3316165c< ea08dfc35f83cfc73493c52f63ae4f2e29edfe8d |
affected | ||
5.18 |
affected | ||
< 5.18 |
unaffected | ||
6.1.135≤ 6.1.* |
unaffected | ||
| … +4 条更多 | |||
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一、 漏洞 CVE-2025-37865 基础信息
漏洞信息
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Vulnerability Title
net: dsa: mv88e6xxx: fix -ENOENT when deleting VLANs and MST is unsupported
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
net: dsa: mv88e6xxx: fix -ENOENT when deleting VLANs and MST is unsupported
Russell King reports that on the ZII dev rev B, deleting a bridge VLAN
from a user port fails with -ENOENT:
https://lore.kernel.org/netdev/Z_lQXNP0s5-IiJzd@shell.armlinux.org.uk/
This comes from mv88e6xxx_port_vlan_leave() -> mv88e6xxx_mst_put(),
which tries to find an MST entry in &chip->msts associated with the SID,
but fails and returns -ENOENT as such.
But we know that this chip does not support MST at all, so that is not
surprising. The question is why does the guard in mv88e6xxx_mst_put()
not exit early:
if (!sid)
return 0;
And the answer seems to be simple: the sid comes from vlan.sid which
supposedly was previously populated by mv88e6xxx_vtu_get().
But some chip->info->ops->vtu_getnext() implementations do not populate
vlan.sid, for example see mv88e6185_g1_vtu_getnext(). In that case,
later in mv88e6xxx_port_vlan_leave() we are using a garbage sid which is
just residual stack memory.
Testing for sid == 0 covers all cases of a non-bridge VLAN or a bridge
VLAN mapped to the default MSTI. For some chips, SID 0 is valid and
installed by mv88e6xxx_stu_setup(). A chip which does not support the
STU would implicitly only support mapping all VLANs to the default MSTI,
so although SID 0 is not valid, it would be sufficient, if we were to
zero-initialize the vlan structure, to fix the bug, due to the
coincidence that a test for vlan.sid == 0 already exists and leads to
the same (correct) behavior.
Another option which would be sufficient would be to add a test for
mv88e6xxx_has_stu() inside mv88e6xxx_mst_put(), symmetric to the one
which already exists in mv88e6xxx_mst_get(). But that placement means
the caller will have to dereference vlan.sid, which means it will access
uninitialized memory, which is not nice even if it ignores it later.
So we end up making both modifications, in order to not rely just on the
sid == 0 coincidence, but also to avoid having uninitialized structure
fields which might get temporarily accessed.
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mv88e6xxx驱动删除VLAN时未处理MST不支持情况，可能导致错误返回。
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-2025-37865 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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同批安全公告 · Linux · 2025-05-09 · 共 52 条
| CVE-2025-37879 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-37885 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37849 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37869 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37886 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37856 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37845 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37882 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37861 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37854 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37873 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37871 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37887 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37876 | 7.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-37888 | Linux kernel 安全漏洞 | |
| CVE-2025-37878 | Linux kernel 安全漏洞 | |
| CVE-2025-37874 | Linux kernel 安全漏洞 | |
| CVE-2025-37872 | Linux kernel 安全漏洞 | |
| CVE-2025-37870 | Linux kernel 安全漏洞 | |
| CVE-2025-37868 | Linux kernel 安全漏洞 |
显示前 20 条，共 52 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-37865
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