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CVE-2024-43867— drm/nouveau: prime: fix refcount underflow

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，该漏洞源于在未初始化nouveau_bo的情况下调用nouveau_bo_ref函数会导致引用计数下溢。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6< 3bcb8bba72ce89667fa863054956267c450c47ef affected
ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6< 906372e753c5027a1dc88743843b6aa2ad1aaecf affected
ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6< 16998763c62bb465ebc409d0373b9cdcef1a61a6 affected
ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6< ebebba4d357b6c67f96776a48ddbaf0060fa4c10 affected
ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6< f23cd66933fe76b84d8e282e5606b4d99068c320 affected
ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6< 2a1b327d57a8ac080977633a18999f032d7e9e3f affected
ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6< a9bf3efc33f1fbf88787a277f7349459283c9b95 affected
3.9 affected
… +8 more rows
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I. Basic Information for CVE-2024-43867

Vulnerability Information
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Vulnerability Title
drm/nouveau: prime: fix refcount underflow
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: prime: fix refcount underflow Calling nouveau_bo_ref() on a nouveau_bo without initializing it (and hence the backing ttm_bo) leads to a refcount underflow. Instead of calling nouveau_bo_ref() in the unwind path of drm_gem_object_init(), clean things up manually. (cherry picked from commit 1b93f3e89d03cfc576636e195466a0d728ad8de5)
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，该漏洞源于在未初始化nouveau_bo的情况下调用nouveau_bo_ref函数会导致引用计数下溢。
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 ab9ccb96a6e6f95bcde6b8b2a524370efdbfdcd6 ~ 3bcb8bba72ce89667fa863054956267c450c47ef -
Linux Linux 3.9 -

II. Public POCs for CVE-2024-43867

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III. Intelligence Information for CVE-2024-43867

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Other References for CVE-2024-43867 (6)

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-2024-43862 net: wan: fsl_qmc_hdlc: Convert carrier_lock spinlock to a mutex
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-2024-43868 riscv/purgatory: align riscv_kernel_entry

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-43867

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