CVE-2026-72215— 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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于在64位配置中从非初始内核线程调用固件入口点时，栈被放置在XKPHYS 64位内存段，导致栈指针不再是32位值，32位固件代码操作栈指针时计算结果错误，可能导致控制流失控和内核挂起。
可能的 ATT&CK 技术 1 AI
T1203 · Exploitation for Client Execution影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9cd4a8ed12d2a6313592e43c14cca5eca6717bee |
affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 3394757c5d3970ab36d2aafa6dd40952b43f0d16 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 1ed18b5c3be9657fe288fa4dae0bef2470598683 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 27857db30c98583e12dd8d939ba2370bce08a5be |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d828bca84311e278093e60b2864a54f4bbb0c2ad |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d3fd2d358df0ca712183509cbbed6a16bde1d17e |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 3ae86630b94f72bf4012c6322f81f622dc4fdf24 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 5ff79e8bdc75db51e30298a75939e2308e7658e0 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-72215 基础信息
漏洞信息
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Vulnerability Title
MIPS: DEC: Ensure 32-bit stack location for o32 prom_printf()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
MIPS: DEC: Ensure 32-bit stack location for o32 prom_printf()
In 64-bit configurations calling any firmware entry points from a kernel
thread other than the initial one will result in a situation where the
stack has been placed in the XKPHYS 64-bit memory segment.
Consequently the stack pointer is no longer a 32-bit value and when the
32-bit firmware code called uses 32-bit ALU operations to manipulate the
stack pointer, the calculated result is incorrect (in fact in the 64-bit
MIPS ISA almost all 32-bit ALU operations will produce an unpredictable
result when executed on 64-bit data) and control goes astray.
This may happen when no final console driver has been enabled in the
configuration and consequently the initial console continues being used
late into bootstrap, or with an upcoming change that will switch the zs
driver to use a platform device, which in turn will make the console
handover happen only after other kernel threads have already been
started, and the kernel will hang at:
pid_max: default: 32768 minimum: 301
or somewhat later, but always before:
cblist_init_generic: Setting adjustable number of callback queues.
has been printed.
It seems that only the prom_printf() entry point is affected. Of all
the other entry points wired only rex_slot_address() and rex_gettcinfo()
are called from a kernel thread other than the initial one, specifically
kernel_init(), and they are leaf functions that do no business with the
stack, having worked with no issue ever since 64-bit support was added
for the platform back in 2002.
To address this issue then, arrange for the stack to be switched in the
o32 wrapper as required for prom_printf() only, by supplying call_o32()
with a pointer to a chunk of initdata space, which is placed in the
CKSEG0 32-bit compatibility segment, observing that prom_printf() is
only called from console output handler and therefore with the console
lock held, implying no need for this code to be reentrant.
Other firmware entry points may be called with interrupts enabled and no
lock held, and may therefore require that call_o32() be reentrant. They
trigger no issue at this point and "if it ain't broke, don't fix it," so
just leave them alone.
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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于在64位配置中从非初始内核线程调用固件入口点时，栈被放置在XKPHYS 64位内存段，导致栈指针不再是32位值，32位固件代码操作栈指针时计算结果错误，可能导致控制流失控和内核挂起。
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-2026-72215 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-72215 补丁与修复 (8)
同批安全公告 · Linux · 2026-08-15 · 共 845 条
| CVE-2026-74475 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74280 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74279 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72408 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74309 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72407 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72421 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72493 | 9.9 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72201 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74268 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72065 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72064 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74478 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72191 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72192 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74269 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72194 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72209 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72211 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72210 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
显示前 20 条，共 845 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-72215
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