| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-53213: net: usb: lan78xx: Fix double free issue with interrupt buffer allocation |
| |
| 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. |
| |
| The Linux kernel CVE team has assigned CVE-2024-53213 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.17 with commit a6df95cae40bee555e01a37b4023ce8e97ffa249 and fixed in 6.1.120 with commit 977128343fc2a30737399b58df8ea77e94f164bd |
| Issue introduced in 5.17 with commit a6df95cae40bee555e01a37b4023ce8e97ffa249 and fixed in 6.6.64 with commit a422ebec863d99d5607fb41bb7af3347fcb436d3 |
| Issue introduced in 5.17 with commit a6df95cae40bee555e01a37b4023ce8e97ffa249 and fixed in 6.11.11 with commit b09512aea6223eec756f52aa584fc29eeab57480 |
| Issue introduced in 5.17 with commit a6df95cae40bee555e01a37b4023ce8e97ffa249 and fixed in 6.12.2 with commit 7ac9f3c981eeceee2ec4d30d850f4a6f50a1ec40 |
| Issue introduced in 5.17 with commit a6df95cae40bee555e01a37b4023ce8e97ffa249 and fixed in 6.13 with commit 03819abbeb11117dcbba40bfe322b88c0c88a6b6 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-53213 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/usb/lan78xx.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| 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 |
