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CVE-2024-43865— s390/fpu: Re-add exception handling in load_fpu_state()

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，该漏洞源于错误地删除了load_fpu_state函数中lfpc指令的异常处理。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 8c09871a950a3fe686e0e27fd4193179c5f74f37< 494b14138201f07343e5488db6360c828fcc8cf6 affected
8c09871a950a3fe686e0e27fd4193179c5f74f37< 4734406c39238cbeafe66f0060084caa3247ff53 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-2024-43865

Vulnerability Information
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Vulnerability Title
s390/fpu: Re-add exception handling in load_fpu_state()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: s390/fpu: Re-add exception handling in load_fpu_state() With the recent rewrite of the fpu code exception handling for the lfpc instruction within load_fpu_state() was erroneously removed. Add it again to prevent that loading invalid floating point register values cause an unhandled specification exception.
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，该漏洞源于错误地删除了load_fpu_state函数中lfpc指令的异常处理。
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 8c09871a950a3fe686e0e27fd4193179c5f74f37 ~ 494b14138201f07343e5488db6360c828fcc8cf6 -
Linux Linux 6.9 -

II. Public POCs for CVE-2024-43865

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III. Intelligence Information for CVE-2024-43865

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Other References for CVE-2024-43865 (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-2024-43862 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-2024-43866 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-2024-43865

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