| 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-2024-46719: usb: typec: ucsi: Fix null pointer dereference in trace |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: typec: ucsi: Fix null pointer dereference in trace |
| |
| ucsi_register_altmode checks IS_ERR for the alt pointer and treats |
| NULL as valid. When CONFIG_TYPEC_DP_ALTMODE is not enabled, |
| ucsi_register_displayport returns NULL which causes a NULL pointer |
| dereference in trace. Rather than return NULL, call |
| typec_port_register_altmode to register DisplayPort alternate mode |
| as a non-controllable mode when CONFIG_TYPEC_DP_ALTMODE is not enabled. |
| |
| The Linux kernel CVE team has assigned CVE-2024-46719 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.284 with commit 8095bf0579ed4906a33f7bec675bfb29b6b16a3b |
| Fixed in 5.10.226 with commit 7e64cabe81c303bdf6fd26b6a09a3289b33bc870 |
| Fixed in 5.15.167 with commit 3aa56313b0de06ce1911950b2cc0c269614a87a9 |
| Fixed in 6.1.109 with commit b4243c05d7e3db0bdbf9124e6fa59b4ca7c807ae |
| Fixed in 6.6.50 with commit 3b9f2d9301ae67070fe77a0c06758722fd7172b7 |
| Fixed in 6.10.9 with commit 99331fe68a8eaa4097143a33fb0c12d5e5e8e830 |
| Fixed in 6.11 with commit 99516f76db48e1a9d54cdfed63c1babcee4e71a5 |
| |
| 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-2024-46719 |
| 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/ucsi/ucsi.h |
| |
| |
| 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/8095bf0579ed4906a33f7bec675bfb29b6b16a3b |
| https://git.kernel.org/stable/c/7e64cabe81c303bdf6fd26b6a09a3289b33bc870 |
| https://git.kernel.org/stable/c/3aa56313b0de06ce1911950b2cc0c269614a87a9 |
| https://git.kernel.org/stable/c/b4243c05d7e3db0bdbf9124e6fa59b4ca7c807ae |
| https://git.kernel.org/stable/c/3b9f2d9301ae67070fe77a0c06758722fd7172b7 |
| https://git.kernel.org/stable/c/99331fe68a8eaa4097143a33fb0c12d5e5e8e830 |
| https://git.kernel.org/stable/c/99516f76db48e1a9d54cdfed63c1babcee4e71a5 |
