| 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-2024-40903: usb: typec: tcpm: fix use-after-free case in tcpm_register_source_caps |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: typec: tcpm: fix use-after-free case in tcpm_register_source_caps |
| |
| There could be a potential use-after-free case in |
| tcpm_register_source_caps(). This could happen when: |
| * new (say invalid) source caps are advertised |
| * the existing source caps are unregistered |
| * tcpm_register_source_caps() returns with an error as |
| usb_power_delivery_register_capabilities() fails |
| |
| This causes port->partner_source_caps to hold on to the now freed source |
| caps. |
| |
| Reset port->partner_source_caps value to NULL after unregistering |
| existing source caps. |
| |
| The Linux kernel CVE team has assigned CVE-2024-40903 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1.91 with commit cfcd544a9974c6b6fb37ca385146e4796dcaf66d and fixed in 6.1.95 with commit 4053696594d7235f3638d49a00cf0f289e4b36a3 |
| Issue introduced in 6.6.31 with commit b16abab1fb645c4b7a86c357dc83a48cf21c2795 and fixed in 6.6.35 with commit 04c05d50fa79a41582f7bde8a1fd4377ae4a39e5 |
| Issue introduced in 6.9 with commit 230ecdf71a644c9c73e0e6735b33173074ae3f94 and fixed in 6.9.6 with commit 6b67b652849faf108a09647c7fde9b179ef24e2b |
| Issue introduced in 6.9 with commit 230ecdf71a644c9c73e0e6735b33173074ae3f94 and fixed in 6.10 with commit e7e921918d905544500ca7a95889f898121ba886 |
| Issue introduced in 6.8.10 with commit 931b5f302d6f7126dbd6879c42d3d6ca580be423 |
| |
| 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-2024-40903 |
| 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/usb/typec/tcpm/tcpm.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/4053696594d7235f3638d49a00cf0f289e4b36a3 |
| https://git.kernel.org/stable/c/04c05d50fa79a41582f7bde8a1fd4377ae4a39e5 |
| https://git.kernel.org/stable/c/6b67b652849faf108a09647c7fde9b179ef24e2b |
| https://git.kernel.org/stable/c/e7e921918d905544500ca7a95889f898121ba886 |
