In the Linux kernel, the following vulnerability has been resolved:
net: usb: lan78xx: Fix double free issue with interrupt buffer allocation
In lan78xx_probe(), the buffer `buf` was being freed twice: once
implicitly through `usb_free_urb(dev->urb_intr)` with the
`URB_FREE_BUFFER` flag and again explicitly by `kfree(buf)`. This caused
a double free issue.
To resolve this, reordered `kmalloc()` and `usb_alloc_urb()` calls to
simplify the initialization sequence and removed the redundant
`kfree(buf)`. Now, `buf` is allocated after `usb_alloc_urb()`, ensuring
it is correctly managed by `usb_fill_int_urb()` and freed by
`usb_free_urb()` as intended.
Metrics
Affected Vendors & Products
References
History
Fri, 10 Jan 2025 18:30:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Linux
Linux linux Kernel |
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Weaknesses | CWE-415 | |
CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
Vendors & Products |
Linux
Linux linux Kernel |
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Metrics |
cvssV3_1
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cvssV3_1
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Mon, 30 Dec 2024 01:30:00 +0000
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References |
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Metrics |
threat_severity
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cvssV3_1
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Fri, 27 Dec 2024 14:00:00 +0000
Type | Values Removed | Values Added |
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Description | In the Linux kernel, the following vulnerability has been resolved: net: usb: lan78xx: Fix double free issue with interrupt buffer allocation In lan78xx_probe(), the buffer `buf` was being freed twice: once implicitly through `usb_free_urb(dev->urb_intr)` with the `URB_FREE_BUFFER` flag and again explicitly by `kfree(buf)`. This caused a double free issue. To resolve this, reordered `kmalloc()` and `usb_alloc_urb()` calls to simplify the initialization sequence and removed the redundant `kfree(buf)`. Now, `buf` is allocated after `usb_alloc_urb()`, ensuring it is correctly managed by `usb_fill_int_urb()` and freed by `usb_free_urb()` as intended. | |
Title | net: usb: lan78xx: Fix double free issue with interrupt buffer allocation | |
References |
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-12-27T13:49:58.709Z
Updated: 2024-12-27T13:49:58.709Z
Reserved: 2024-11-19T17:17:25.023Z
Link: CVE-2024-53213
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2024-12-27T14:15:29.237
Modified: 2025-01-10T18:04:48.207
Link: CVE-2024-53213
Redhat