CVE-2022-50545— 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r6040驱动在探测和移除过程中存在内存泄漏，可能导致内存耗尽。
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application影响版本矩阵 20
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 3831861b4ad8fd0ad7110048eb3e155628799d2b< a04707f4596952049da05756c27398c34d9a1d36 |
affected |
3831861b4ad8fd0ad7110048eb3e155628799d2b< b4448816e6a565e08236a6009c6bf48c6836cdfd |
affected | ||
3831861b4ad8fd0ad7110048eb3e155628799d2b< 2ce242e1b9ad31c1f68496b3548e407a8cb2c07d |
affected | ||
3831861b4ad8fd0ad7110048eb3e155628799d2b< b0a61359026b57a287a48fbb4ba1d097023eca3e |
affected | ||
3831861b4ad8fd0ad7110048eb3e155628799d2b< 3d5f83a62e8235d235534b3dc6f197d8a822c269 |
affected | ||
3831861b4ad8fd0ad7110048eb3e155628799d2b< 9b5b50329e2e966831a7237dd6949e7b5362a49a |
affected | ||
3831861b4ad8fd0ad7110048eb3e155628799d2b< ad2c8f25457ca9a81e7e958148cbc26600ce3071 |
affected | ||
3831861b4ad8fd0ad7110048eb3e155628799d2b< 5944c25c67de54e0aa53623e1e1af3bf8b16ed44 |
affected | ||
| … +12 条更多 | |||
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一、 漏洞 CVE-2022-50545 基础信息
漏洞信息
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Vulnerability Title
r6040: Fix kmemleak in probe and remove
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
r6040: Fix kmemleak in probe and remove
There is a memory leaks reported by kmemleak:
unreferenced object 0xffff888116111000 (size 2048):
comm "modprobe", pid 817, jiffies 4294759745 (age 76.502s)
hex dump (first 32 bytes):
00 c4 0a 04 81 88 ff ff 08 10 11 16 81 88 ff ff ................
08 10 11 16 81 88 ff ff 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff815bcd82>] kmalloc_trace+0x22/0x60
[<ffffffff827e20ee>] phy_device_create+0x4e/0x90
[<ffffffff827e6072>] get_phy_device+0xd2/0x220
[<ffffffff827e7844>] mdiobus_scan+0xa4/0x2e0
[<ffffffff827e8be2>] __mdiobus_register+0x482/0x8b0
[<ffffffffa01f5d24>] r6040_init_one+0x714/0xd2c [r6040]
...
The problem occurs in probe process as follows:
r6040_init_one:
mdiobus_register
mdiobus_scan <- alloc and register phy_device,
the reference count of phy_device is 3
r6040_mii_probe
phy_connect <- connect to the first phy_device,
so the reference count of the first
phy_device is 4, others are 3
register_netdev <- fault inject succeeded, goto error handling path
// error handling path
err_out_mdio_unregister:
mdiobus_unregister(lp->mii_bus);
err_out_mdio:
mdiobus_free(lp->mii_bus); <- the reference count of the first
phy_device is 1, it is not released
and other phy_devices are released
// similarly, the remove process also has the same problem
The root cause is traced to the phy_device is not disconnected when
removes one r6040 device in r6040_remove_one() or on error handling path
after r6040_mii probed successfully. In r6040_mii_probe(), a net ethernet
device is connected to the first PHY device of mii_bus, in order to
notify the connected driver when the link status changes, which is the
default behavior of the PHY infrastructure to handle everything.
Therefore the phy_device should be disconnected when removes one r6040
device or on error handling path.
Fix it by adding phy_disconnect() when removes one r6040 device or on
error handling path after r6040_mii probed successfully.
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r6040驱动在探测和移除过程中存在内存泄漏，可能导致内存耗尽。
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-2022-50545 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2022-50545 补丁与修复 (9)
同批安全公告 · Linux · 2025-10-07 · 共 118 条
| CVE-2023-53629 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2023-53630 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53676 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53675 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53673 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53679 | 8.3 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53635 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50555 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53659 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53619 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53660 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53643 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53645 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53646 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53669 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53626 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53627 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50528 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53683 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-50518 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 118 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2022-50545
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