| 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-2024-50268: usb: typec: fix potential out of bounds in ucsi_ccg_update_set_new_cam_cmd() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: typec: fix potential out of bounds in ucsi_ccg_update_set_new_cam_cmd() |
| |
| The "*cmd" variable can be controlled by the user via debugfs. That means |
| "new_cam" can be as high as 255 while the size of the uc->updated[] array |
| is UCSI_MAX_ALTMODES (30). |
| |
| The call tree is: |
| ucsi_cmd() // val comes from simple_attr_write_xsigned() |
| -> ucsi_send_command() |
| -> ucsi_send_command_common() |
| -> ucsi_run_command() // calls ucsi->ops->sync_control() |
| -> ucsi_ccg_sync_control() |
| |
| The Linux kernel CVE team has assigned CVE-2024-50268 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.6 with commit 170a6726d0e266f2c8f306e3d61715c32f4ee41e and fixed in 5.10.230 with commit d76923164705821aa1b01b8d9d1741f20c654ab4 |
| Issue introduced in 5.6 with commit 170a6726d0e266f2c8f306e3d61715c32f4ee41e and fixed in 5.15.172 with commit 8f47984b35f3be0cfc652c2ca358d5768ea3456b |
| Issue introduced in 5.6 with commit 170a6726d0e266f2c8f306e3d61715c32f4ee41e and fixed in 6.1.117 with commit 604314ecd682913925980dc955caea2d036eab5f |
| Issue introduced in 5.6 with commit 170a6726d0e266f2c8f306e3d61715c32f4ee41e and fixed in 6.6.61 with commit 69e19774f15e12dda6c6c58001d059e30895009b |
| Issue introduced in 5.6 with commit 170a6726d0e266f2c8f306e3d61715c32f4ee41e and fixed in 6.11.8 with commit 3a2ba841659a0f15102585120dea75d8d5209616 |
| Issue introduced in 5.6 with commit 170a6726d0e266f2c8f306e3d61715c32f4ee41e and fixed in 6.12 with commit 7dd08a0b4193087976db6b3ee7807de7e8316f96 |
| |
| 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-2024-50268 |
| 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_ccg.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/d76923164705821aa1b01b8d9d1741f20c654ab4 |
| https://git.kernel.org/stable/c/8f47984b35f3be0cfc652c2ca358d5768ea3456b |
| https://git.kernel.org/stable/c/604314ecd682913925980dc955caea2d036eab5f |
| https://git.kernel.org/stable/c/69e19774f15e12dda6c6c58001d059e30895009b |
| https://git.kernel.org/stable/c/3a2ba841659a0f15102585120dea75d8d5209616 |
| https://git.kernel.org/stable/c/7dd08a0b4193087976db6b3ee7807de7e8316f96 |
