CVE-2026-72029— 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MUX下行链路解码器未对设备提供的偏移和长度进行充分边界验证，可能导致越界读取或无限循环。
可能的 ATT&CK 技术 1 AI
T1552.006 · Group Policy Preferences影响版本矩阵 14
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 1f52d7b622854b8bd7a1be3de095ca2e1f77098e< 155851e501d6c649cbcfcca6472dc26269b04b6b |
affected |
1f52d7b622854b8bd7a1be3de095ca2e1f77098e< 2b822df8e498aa6ca828e16afd8ffec27f7e4c88 |
affected | ||
1f52d7b622854b8bd7a1be3de095ca2e1f77098e< 55cfea8e8d9117ad086d1e1a0ff87f306f8e3ad0 |
affected | ||
1f52d7b622854b8bd7a1be3de095ca2e1f77098e< 07f5eb6d268a37bd9e131079489655cd599182e0 |
affected | ||
1f52d7b622854b8bd7a1be3de095ca2e1f77098e< 77f0023f22f6a2616ae128e9c93961b24ae52611 |
affected | ||
1f52d7b622854b8bd7a1be3de095ca2e1f77098e< 526b8ef54668780c8f69e0211c342763d5dcbad1 |
affected | ||
5.18 |
affected | ||
< 5.18 |
unaffected | ||
| … +6 条更多 | |||
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一、 漏洞 CVE-2026-72029 基础信息
漏洞信息
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Vulnerability Title
net: wwan: iosm: bound device offsets in the MUX downlink decoder
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
net: wwan: iosm: bound device offsets in the MUX downlink decoder
mux_dl_adb_decode() walks a chain of aggregated datagram tables using
offsets and lengths taken from the modem. first_table_index,
next_table_index, table_length, datagram_index and datagram_length are
all device supplied le values. Only first_table_index was checked, and
only for being non zero. The decoder then formed adth = block +
adth_index and read the table header and the datagram entries with no
bound against the received skb. A modem that reports an index or a
length past the downlink buffer makes the decoder read out of bounds.
The buffer is IPC_MEM_MAX_DL_MUX_LITE_BUF_SIZE and skb->len is at most
that, so skb->len is the real limit, but none of these in band offsets
were checked against it.
The table chain is also followed with no forward progress check. The loop
takes the next table from adth->next_table_index and stops only when that
reaches zero. A modem can stage two tables that point at each other, so
the loop never ends. It runs in softirq and clones the skb on every pass.
Validate every device offset and length against skb->len before use.
The block header must fit. Each table header, on entry and after every
next_table_index, must lie inside the skb. The datagram table must fit.
Each datagram index and length must stay inside the skb. The header
padding must not exceed the datagram length so the receive length does
not wrap. Require each next_table_index to move forward so the chain
cannot cycle.
This was reproduced under KASAN as a slab out of bounds read on a normal
downlink receive once the iosm net device is up.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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MUX下行链路解码器未对设备提供的偏移和长度进行充分边界验证，可能导致越界读取或无限循环。
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-2026-72029 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-72029 补丁与修复 (6)
同批安全公告 · Linux · 2026-08-15 · 共 845 条
| CVE-2026-72421 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74475 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74279 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74280 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74309 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72408 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72407 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72493 | 9.9 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72206 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72317 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72208 | 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-2026-74427 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72137 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74428 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72429 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72139 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-74545 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-72046 | 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-2026-72029
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