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CVE-2024-39491— ALSA: hda: cs35l56: Fix lifetime of cs_dsp instance

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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cs35l56_hda_common_probe函数错误路径中缺少对cs_dsp_remove函数的调用。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1562

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 73cfbfa9caea8eda54b4c6e49a9555533660aa1e< 9054c474f9c219e58a441e401c0e6e38fe713ff1 affected
73cfbfa9caea8eda54b4c6e49a9555533660aa1e< 60d5e087e5f334475b032ad7e6ad849fb998f303 affected
73cfbfa9caea8eda54b4c6e49a9555533660aa1e< d344873c4cbde249b7152d36a273bcc45864001e affected
6.6 affected
< 6.6 unaffected
6.6.33≤ 6.6.* unaffected
6.9.4≤ 6.9.* unaffected
6.10≤ * unaffected
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I. Basic Information for CVE-2024-39491

Vulnerability Information
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Vulnerability Title
ALSA: hda: cs35l56: Fix lifetime of cs_dsp instance
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: cs35l56: Fix lifetime of cs_dsp instance The cs_dsp instance is initialized in the driver probe() so it should be freed in the driver remove(). Also fix a missing call to cs_dsp_remove() in the error path of cs35l56_hda_common_probe(). The call to cs_dsp_remove() was being done in the component unbind callback cs35l56_hda_unbind(). This meant that if the driver was unbound and then re-bound it would be using an uninitialized cs_dsp instance. It is best to initialize the cs_dsp instance in probe() so that it can return an error if it fails. The component binding API doesn't have any error handling so there's no way to handle a failure if cs_dsp was initialized in the bind.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
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cs35l56_hda_common_probe函数错误路径中缺少对cs_dsp_remove函数的调用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 73cfbfa9caea8eda54b4c6e49a9555533660aa1e ~ 9054c474f9c219e58a441e401c0e6e38fe713ff1 -
Linux Linux 6.6 -

II. Public POCs for CVE-2024-39491

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III. Intelligence Information for CVE-2024-39491

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Other References for CVE-2024-39491 (3)

Same Patch Batch · Linux · 2024-07-10 · 6 CVEs total

CVE-2024-39493 crypto: qat - Fix ADF_DEV_RESET_SYNC memory leak
CVE-2024-39492 mailbox: mtk-cmdq: Fix pm_runtime_get_sync() warning in mbox shutdown
CVE-2024-39490 ipv6: sr: fix missing sk_buff release in seg6_input_core
CVE-2024-39489 ipv6: sr: fix memleak in seg6_hmac_init_algo
CVE-2024-39488 arm64: asm-bug: Add .align 2 to the end of __BUG_ENTRY

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-39491

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