CVE-2024-53213
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-415
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/03819abbeb11117dcbba40bfe322b88c0c88a6b6Patch
- https://git.kernel.org/stable/c/2970ef2fce90c661952ec2b451b0276d5f8d6180
- https://git.kernel.org/stable/c/7ac9f3c981eeceee2ec4d30d850f4a6f50a1ec40Patch
- https://git.kernel.org/stable/c/977128343fc2a30737399b58df8ea77e94f164bdPatch
- https://git.kernel.org/stable/c/a422ebec863d99d5607fb41bb7af3347fcb436d3Patch
- https://git.kernel.org/stable/c/b09512aea6223eec756f52aa584fc29eeab57480Patch
- https://git.kernel.org/stable/c/cc5aa8e3ad69dcedeba79e667d4a2efb72a305af
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.