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CVE-2024-43864— net/mlx5e: Fix CT entry update leaks of modify header context

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。攻击者利用该漏洞导致内核恐慌。

CVSS 9.8 · Critical EPSS 0.47% · P39

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 94ceffb48eac7692677d8093dcde6965b70c4b35< daab2cc17b6b6ab158566bba037e9551fd432b59 affected
94ceffb48eac7692677d8093dcde6965b70c4b35< 89064d09c56b44c668509bf793c410484f63f5ad affected
94ceffb48eac7692677d8093dcde6965b70c4b35< 025f2b85a5e5a46df14ecf162c3c80a957a36d0b affected
6.3 affected
< 6.3 unaffected
6.6.45≤ 6.6.* unaffected
6.10.4≤ 6.10.* unaffected
6.11≤ * unaffected
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I. Basic Information for CVE-2024-43864

Vulnerability Information
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Vulnerability Title
net/mlx5e: Fix CT entry update leaks of modify header context
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix CT entry update leaks of modify header context The cited commit allocates a new modify header to replace the old one when updating CT entry. But if failed to allocate a new one, eg. exceed the max number firmware can support, modify header will be an error pointer that will trigger a panic when deallocating it. And the old modify header point is copied to old attr. When the old attr is freed, the old modify header is lost. Fix it by restoring the old attr to attr when failed to allocate a new modify header context. So when the CT entry is freed, the right modify header context will be freed. And the panic of accessing error pointer is also fixed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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。攻击者利用该漏洞导致内核恐慌。
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 94ceffb48eac7692677d8093dcde6965b70c4b35 ~ daab2cc17b6b6ab158566bba037e9551fd432b59 -
Linux Linux 6.3 -

II. Public POCs for CVE-2024-43864

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III. Intelligence Information for CVE-2024-43864

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Other References for CVE-2024-43864 (3)

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

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-2024-43867 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-2024-43864

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