CVE-2024-47748

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-47748
In the Linux kernel, the following vulnerability has been resolved: vhost_vdpa: assign irq bypass producer token correctly We used to call irq_bypass_unregister_producer() in vhost_vdpa_setup_vq_irq() which is problematic as we don't know if the token pointer is still valid or not. Actually, we use the eventfd_ctx as the token so the life cycle of the token should be bound to the VHOST_SET_VRING_CALL instead of vhost_vdpa_setup_vq_irq() which could be called by set_status(). Fixing this by setting up irq bypass producer's token when handling VHOST_SET_VRING_CALL and un-registering the producer before calling vhost_vring_ioctl() to prevent a possible use after free as eventfd could have been released in vhost_vring_ioctl(). And such registering and unregistering will only be done if DRIVER_OK is set.

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0 Patch
https://git.kernel.org/stable/c/927a2580208e0f9b0b47b08f1c802b7233a7ba3c Patch
https://git.kernel.org/stable/c/ec5f1b54ceb23475049ada6e7a43452cf4df88d1 Patch
https://git.kernel.org/stable/c/ca64edd7ae93402af2596a952e0d94d545e2b9c0 Patch
https://git.kernel.org/stable/c/fae9b1776f53aab93ab345bdbf653b991aed717d Patch
https://git.kernel.org/stable/c/7cf2fb51175cafe01df8c43fa15a06194a59c6e2 Patch
https://git.kernel.org/stable/c/02e9e9366fefe461719da5d173385b6685f70319 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

23 Oct 2024, 17:28

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/02e9e9366fefe461719da5d173385b6685f70319 - () https://git.kernel.org/stable/c/02e9e9366fefe461719da5d173385b6685f70319 - Patch
References () https://git.kernel.org/stable/c/fae9b1776f53aab93ab345bdbf653b991aed717d - () https://git.kernel.org/stable/c/fae9b1776f53aab93ab345bdbf653b991aed717d - Patch
References () https://git.kernel.org/stable/c/0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0 - () https://git.kernel.org/stable/c/0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0 - Patch
References () https://git.kernel.org/stable/c/ec5f1b54ceb23475049ada6e7a43452cf4df88d1 - () https://git.kernel.org/stable/c/ec5f1b54ceb23475049ada6e7a43452cf4df88d1 - Patch
References () https://git.kernel.org/stable/c/7cf2fb51175cafe01df8c43fa15a06194a59c6e2 - () https://git.kernel.org/stable/c/7cf2fb51175cafe01df8c43fa15a06194a59c6e2 - Patch
References () https://git.kernel.org/stable/c/927a2580208e0f9b0b47b08f1c802b7233a7ba3c - () https://git.kernel.org/stable/c/927a2580208e0f9b0b47b08f1c802b7233a7ba3c - Patch
References () https://git.kernel.org/stable/c/ca64edd7ae93402af2596a952e0d94d545e2b9c0 - () https://git.kernel.org/stable/c/ca64edd7ae93402af2596a952e0d94d545e2b9c0 - Patch
First Time Linux
Linux linux Kernel
CWE CWE-416
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8

21 Oct 2024, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-10-21 13:15

Updated : 2024-10-23 17:28

NVD link : CVE-2024-47748

Mitre link : CVE-2024-47748

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free