HighFix available
net: usb: lan78xx: Fix double free issue with interrupt buffer allocation
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.258, 5.15.209, 6.1.120, 6.11.11, 6.12.2, 6.6.64
- CVEs
- CVE-2024-53213
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 11:29 UTC · Revision 1
Source evidence
net: usb: lan78xx: Fix double free issue with interrupt buffer allocation
core-osv · Original sourcePublished 27 Dec 2024, 13:49 UTC
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.
osv:CVE-2024-53213
Kernel
Fixed versions: 5.10.258, 5.15.209, 6.1.120, 6.6.64, 6.11.11, 6.12.2
Complete source record
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"modified": "2026-10-28T02:30:50.763681285Z",
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