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CVE-2024-43862— net: wan: fsl_qmc_hdlc: Convert carrier_lock spinlock to a mutex

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。攻击者利用该漏洞会导致死锁问题。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1564.008 · Email Hiding Rules

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 54762918ca856028d33d1d56d017a4d7706c6196< f223d2b4acb7a45a6e0581cb380e1af1a6dc7ab9 affected
54762918ca856028d33d1d56d017a4d7706c6196< c4d6a347ba7babdf9d90a0eb24048c266cae0532 affected
6.9 affected
< 6.9 unaffected
6.10.4≤ 6.10.* unaffected
6.11≤ * unaffected
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I. Basic Information for CVE-2024-43862

Vulnerability Information
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Vulnerability Title
net: wan: fsl_qmc_hdlc: Convert carrier_lock spinlock to a mutex
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: wan: fsl_qmc_hdlc: Convert carrier_lock spinlock to a mutex The carrier_lock spinlock protects the carrier detection. While it is held, framer_get_status() is called which in turn takes a mutex. This is not correct and can lead to a deadlock. A run with PROVE_LOCKING enabled detected the issue: [ BUG: Invalid wait context ] ... c204ddbc (&framer->mutex){+.+.}-{3:3}, at: framer_get_status+0x40/0x78 other info that might help us debug this: context-{4:4} 2 locks held by ifconfig/146: #0: c0926a38 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x12c/0x664 #1: c2006a40 (&qmc_hdlc->carrier_lock){....}-{2:2}, at: qmc_hdlc_framer_set_carrier+0x30/0x98 Avoid the spinlock usage and convert carrier_lock to a mutex.
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。攻击者利用该漏洞会导致死锁问题。
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 54762918ca856028d33d1d56d017a4d7706c6196 ~ f223d2b4acb7a45a6e0581cb380e1af1a6dc7ab9 -
Linux Linux 6.9 -

II. Public POCs for CVE-2024-43862

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III. Intelligence Information for CVE-2024-43862

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Other References for CVE-2024-43862 (2)

Same Patch Batch · Linux · 2024-08-20 · 8 CVEs total

CVE-2024-43864 9.8 CRITICAL net/mlx5e: Fix CT entry update leaks of modify header context
CVE-2024-43861 net: usb: qmi_wwan: fix memory leak for not ip packets
CVE-2024-43863 drm/vmwgfx: Fix a deadlock in dma buf fence polling
CVE-2024-43865 s390/fpu: Re-add exception handling in load_fpu_state()
CVE-2024-43866 net/mlx5: Always drain health in shutdown callback
CVE-2024-43867 drm/nouveau: prime: fix refcount underflow
CVE-2024-43868 riscv/purgatory: align riscv_kernel_entry

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-43862

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