CVE-2026-64252— 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基金会开源的一款操作系统内核。 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初始控制台输出处理程序时，堆栈位于XKPHYS内存段，导致缓冲区地址被32位固件截断，访问错误内存位置，可能导致内核崩溃。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9e22b6fc6532cd566dad6d89d8fb3885248e364a |
affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 1c80327dedf05b8c8ca025b76c21235b19dd3a86 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8a15826e5d3bdcfbef2f8e9330c69ea9ee7282e7 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< ab465495b1ed5efb7d2f9b90d8b20b1e0473e26f |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 35212f2adc2cf15122b96b987519de235b855e46 |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6e61fc2e06e44b6d30248cc5bc47a58e75c2b43e |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 07c245bc39f94481fd75ff1ed54f7ab97111f3dd |
affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 7fb13fd35110ebe95eb053faf79d018f51144d85 |
affected | ||
| … +10 条更多 | |||
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2026-64252 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
MIPS: DEC: Prevent initial console buffer from landing in XKPHYS
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
MIPS: DEC: Prevent initial console buffer from landing in XKPHYS
In 64-bit configurations calling the initial console output handler 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 and
consequently so has been the buffer allocated there that is used as the
argument corresponding to the `%s' output conversion specifier for the
firmware's printf() entry point.
This 64-bit address will then be truncated by 32-bit firmware, resulting
in an attempt to access the wrong memory location, which in turn will
cause all kinds of unpredictable behaviour, such as a kernel crash:
Console: colour dummy device 160x64
Calibrating delay loop... 49.36 BogoMIPS (lpj=192512)
pid_max: default: 32768 minimum: 301
CPU 0 Unable to handle kernel paging request at virtual address 000000000203bd00, epc == ffffffffbfc08364, ra == ffffffffbfc08800
Oops[#1]:
CPU: 0 PID: 0 Comm: swapper Not tainted 5.18.0-rc2-00254-gfb649bda6f56-dirty #121
$ 0 : 0000000000000000 0000000000000001 0000000000000023 ffffffff80684ba0
$ 4 : 000000000203bd00 ffffffffbfc0f3b4 ffffffffffffffff 0000000000000073
$ 8 : 0a303d7469000000 0000000000000000 0000000000000073 ffffffffbfc0f473
$12 : 0000000000000002 0000000000000000 ffffffff80684c1c 0000000000000000
$16 : 0000000000000000 ffffffff80596dc9 0000000000000000 ffffffffbfc09240
$20 : ffffffff80684c40 ffffffffbfc0f400 000000000000002d 000000000000002b
$24 : ffffffffffffffbf 000000000203bd00
$28 : ffffffff805f0000 ffffffff80684b58 0000000000000030 ffffffffbfc08800
Hi : 0000000000000000
Lo : 0000000000000aa8
epc : ffffffffbfc08364 0xffffffffbfc08364
ra : ffffffffbfc08800 0xffffffffbfc08800
Status: 140120e2 KX SX UX KERNEL EXL
Cause : 00000008 (ExcCode 02)
BadVA : 000000000203bd00
PrId : 00000430 (R4000SC)
Modules linked in:
Process swapper (pid: 0, threadinfo=(____ptrval____), task=(____ptrval____), tls=0000000000000000)
Stack : 0000000000000000 0000000000000000 0000000000000000 0000004d0000004d
80684cc0806a2a40 80596dc80000004d 8061000000000000 bfc0850c80684c38
0000000000000000 000000000203bd00 0000000000000000 0000000000000000
0000000000000000 00000000bfc0f3b4 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000002500000000 0000000000000000 0000000000000000 802c1a7400000000
0203bd0080596dc8 0203bd4d69000000 6c61632000000018 5f746567646e6172
6c616320625f6d6f 5f736e5f6d6f7266 206361323778302b 303d74696e726320
806a0a38806b0000 806a0a38806b0000 00000000806b0000 80683c58806b0000
...
Call Trace:
Code: a082ffff 03e00008 00601021 <80820000> 00001821 10400005 24840001 80820000 24630001
---[ end trace 0000000000000000 ]---
Kernel panic - not syncing: Fatal exception in interrupt
KN04 V2.1k (PC: 0xa0026768, SP: 0x806848e8)
>>
In this case the pointer in $4 was truncated from 0x980000000203bd00 to
0x000000000203bd00.
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.
Fix the issue by making the buffer static and initdata, and therefore
placed in the CKSEG0 32-bit compatibility segment, observing that the
console output handler is called with the console lock held, implying
no need for this code to be reentrant. Add an assertion to verify the
buffer actually has been placed in a compatibility segment.
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基金会开源的一款操作系统内核。 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初始控制台输出处理程序时，堆栈位于XKPHYS内存段，导致缓冲区地址被32位固件截断，访问错误内存位置，可能导致内核崩溃。
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-2026-64252 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2026-64252 的情报信息
请登录查看更多情报信息。
CVE-2026-64252 补丁与修复 (8)
同批安全公告 · Linux · 2026-07-24 · 共 48 条
| CVE-2026-64216 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64232 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-64255 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64247 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64223 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64235 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64226 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64217 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64218 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64221 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64251 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64208 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64210 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64243 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64219 | 7.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64222 | 7.0 HIGH | Linux kernel 安全漏洞 |
| CVE-2026-64224 | Linux kernel 安全漏洞 | |
| CVE-2026-64227 | Linux kernel 安全漏洞 | |
| CVE-2026-64209 | Linux kernel 安全漏洞 | |
| CVE-2026-64225 | Linux kernel 安全漏洞 |
显示前 20 条，共 48 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-64252
暂无评论