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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3281ebb3dc5ef19507e65523e9f8c00e20b285ca to < cc5aa8e3ad69dcedeba79e667d4a2efb72a305afaffecteddcafa5a8452738eb28085f559b0683d55e22b2f5 to < 2970ef2fce90c661952ec2b451b0276d5f8d6180affecteda6df95cae40bee555e01a37b4023ce8e97ffa249 to < 977128343fc2a30737399b58df8ea77e94f164bdaffecteda6df95cae40bee555e01a37b4023ce8e97ffa249 to < a422ebec863d99d5607fb41bb7af3347fcb436d3affecteda6df95cae40bee555e01a37b4023ce8e97ffa249 to < b09512aea6223eec756f52aa584fc29eeab57480affecteda6df95cae40bee555e01a37b4023ce8e97ffa249 to < 7ac9f3c981eeceee2ec4d30d850f4a6f50a1ec40affecteda6df95cae40bee555e01a37b4023ce8e97ffa249 to < 03819abbeb11117dcbba40bfe322b88c0c88a6b6affected5.10.252 to < 5.10.258affected5.15.202 to < 5.15.209affected
Linux Linux
Default version status: affected
5.17affected0 to < 5.17unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.120 to ≤ 6.1.*unaffected6.6.64 to ≤ 6.6.*unaffected6.11.11 to ≤ 6.11.*unaffected6.12.2 to ≤ 6.12.*unaffected6.13 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/cc5aa8e3ad69dcedeba79e667d4a2efb72a305af ↗
- https://git.kernel.org/stable/c/2970ef2fce90c661952ec2b451b0276d5f8d6180 ↗
- https://git.kernel.org/stable/c/977128343fc2a30737399b58df8ea77e94f164bd ↗
- https://git.kernel.org/stable/c/a422ebec863d99d5607fb41bb7af3347fcb436d3 ↗
- https://git.kernel.org/stable/c/b09512aea6223eec756f52aa584fc29eeab57480 ↗
- https://git.kernel.org/stable/c/7ac9f3c981eeceee2ec4d30d850f4a6f50a1ec40 ↗
- https://git.kernel.org/stable/c/03819abbeb11117dcbba40bfe322b88c0c88a6b6 ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html ↗