| 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-2024-50113: firewire: core: fix invalid port index for parent device |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| firewire: core: fix invalid port index for parent device |
| |
| In a commit 24b7f8e5cd65 ("firewire: core: use helper functions for self |
| ID sequence"), the enumeration over self ID sequence was refactored with |
| some helper functions with KUnit tests. These helper functions are |
| guaranteed to work expectedly by the KUnit tests, however their application |
| includes a mistake to assign invalid value to the index of port connected |
| to parent device. |
| |
| This bug affects the case that any extra node devices which has three or |
| more ports are connected to 1394 OHCI controller. In the case, the path |
| to update the tree cache could hits WARN_ON(), and gets general protection |
| fault due to the access to invalid address computed by the invalid value. |
| |
| This commit fixes the bug to assign correct port index. |
| |
| The Linux kernel CVE team has assigned CVE-2024-50113 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.11 with commit 24b7f8e5cd656196a13077e160aec45ad89b58d9 and fixed in 6.11.6 with commit 90753a38bc3d058820981f812a908a99f7b337c1 |
| Issue introduced in 6.11 with commit 24b7f8e5cd656196a13077e160aec45ad89b58d9 and fixed in 6.12 with commit f6a6780e0b9bbcf311a727afed06fee533a5e957 |
| |
| 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-2024-50113 |
| 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/firewire/core-topology.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/90753a38bc3d058820981f812a908a99f7b337c1 |
| https://git.kernel.org/stable/c/f6a6780e0b9bbcf311a727afed06fee533a5e957 |
