| 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-2024-36973: misc: microchip: pci1xxxx: fix double free in the error handling of gp_aux_bus_probe() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| misc: microchip: pci1xxxx: fix double free in the error handling of gp_aux_bus_probe() |
| |
| When auxiliary_device_add() returns error and then calls |
| auxiliary_device_uninit(), callback function |
| gp_auxiliary_device_release() calls ida_free() and |
| kfree(aux_device_wrapper) to free memory. We should't |
| call them again in the error handling path. |
| |
| Fix this by skipping the redundant cleanup functions. |
| |
| The Linux kernel CVE team has assigned CVE-2024-36973 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1 with commit 393fc2f5948fd340d016a9557eea6e1ac2f6c60c and fixed in 6.1.95 with commit 34ae447b138680b5ed3660f7d935ff3faf88ba1a |
| Issue introduced in 6.1 with commit 393fc2f5948fd340d016a9557eea6e1ac2f6c60c and fixed in 6.6.35 with commit 86c9713602f786f441630c4ee02891987f8618b9 |
| Issue introduced in 6.1 with commit 393fc2f5948fd340d016a9557eea6e1ac2f6c60c and fixed in 6.9.6 with commit 1efe551982297924d05a367aa2b6ec3d275d5742 |
| Issue introduced in 6.1 with commit 393fc2f5948fd340d016a9557eea6e1ac2f6c60c and fixed in 6.10 with commit 086c6cbcc563c81d55257f9b27e14faf1d0963d3 |
| |
| 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-2024-36973 |
| 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/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.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/34ae447b138680b5ed3660f7d935ff3faf88ba1a |
| https://git.kernel.org/stable/c/86c9713602f786f441630c4ee02891987f8618b9 |
| https://git.kernel.org/stable/c/1efe551982297924d05a367aa2b6ec3d275d5742 |
| https://git.kernel.org/stable/c/086c6cbcc563c81d55257f9b27e14faf1d0963d3 |
