CVE-2024-56685— 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bpf模块中bpf_msg_pop_data函数中的多个问题，可能导致内存错误。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 8
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 13f58267cda3d6946c8f4de368ad5d4a003baa61< 376f4800f34a28def026ff5c5d4fc5e54e1744ff |
affected |
13f58267cda3d6946c8f4de368ad5d4a003baa61< 550279449ff54c5aa28cfca5c567308cbfb145f0 |
affected | ||
13f58267cda3d6946c8f4de368ad5d4a003baa61< 2f2020327cc8561d7c520d2f2d9acea84fa7b3a3 |
affected | ||
6.8 |
affected | ||
< 6.8 |
unaffected | ||
6.11.11≤ 6.11.* |
unaffected | ||
6.12.2≤ 6.12.* |
unaffected | ||
6.13≤ * |
unaffected |
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一、 漏洞 CVE-2024-56685 基础信息
漏洞信息
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Vulnerability Title
ASoC: mediatek: Check num_codecs is not zero to avoid panic during probe
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
ASoC: mediatek: Check num_codecs is not zero to avoid panic during probe
Following commit 13f58267cda3 ("ASoC: soc.h: don't create dummy
Component via COMP_DUMMY()"), COMP_DUMMY() became an array with zero
length, and only gets populated with the dummy struct after the card is
registered. Since the sound card driver's probe happens before the card
registration, accessing any of the members of a dummy component during
probe will result in undefined behavior.
This can be observed in the mt8188 and mt8195 machine sound drivers. By
omitting a dai link subnode in the sound card's node in the Devicetree,
the default uninitialized dummy codec is used, and when its dai_name
pointer gets passed to strcmp() it results in a null pointer dereference
and a kernel panic.
In addition to that, set_card_codec_info() in the generic helpers file,
mtk-soundcard-driver.c, will populate a dai link with a dummy codec when
a dai link node is present in DT but with no codec property.
The result is that at probe time, a dummy codec can either be
uninitialized with num_codecs = 0, or be an initialized dummy codec,
with num_codecs = 1 and dai_name = "snd-soc-dummy-dai". In order to
accommodate for both situations, check that num_codecs is not zero
before accessing the codecs' fields but still check for the codec's dai
name against "snd-soc-dummy-dai" as needed.
While at it, also drop the check that dai_name is not null in the mt8192
driver, introduced in commit 4d4e1b6319e5 ("ASoC: mediatek: mt8192:
Check existence of dai_name before dereferencing"), as it is actually
redundant given the preceding num_codecs != 0 check.
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bpf模块中bpf_msg_pop_data函数中的多个问题，可能导致内存错误。
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-2024-56685 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-56685 补丁与修复 (3)
同批安全公告 · Linux · 2024-12-28 · 共 32 条
| CVE-2024-56704 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56684 | 8.4 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56677 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56706 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56692 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56693 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56681 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56688 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56703 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56694 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-56696 | Linux kernel 安全漏洞 | |
| CVE-2024-56708 | Linux kernel 安全漏洞 | |
| CVE-2024-56707 | Linux kernel 安全漏洞 | |
| CVE-2024-56705 | Linux kernel 安全漏洞 | |
| CVE-2024-56676 | Linux kernel 安全漏洞 | |
| CVE-2024-56678 | Linux kernel 安全漏洞 | |
| CVE-2024-56701 | Linux kernel 安全漏洞 | |
| CVE-2024-56702 | Linux kernel 安全漏洞 | |
| CVE-2024-56700 | Linux kernel 安全漏洞 | |
| CVE-2024-56699 | Linux kernel 安全漏洞 |
显示前 20 条，共 32 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2024-56685
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