| 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-2024-57915: usb: gadget: u_serial: Disable ep before setting port to null to fix the crash caused by port being null |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: gadget: u_serial: Disable ep before setting port to null to fix the crash caused by port being null |
| |
| Considering that in some extreme cases, when performing the |
| unbinding operation, gserial_disconnect has cleared gser->ioport, |
| which triggers gadget reconfiguration, and then calls gs_read_complete, |
| resulting in access to a null pointer. Therefore, ep is disabled before |
| gserial_disconnect sets port to null to prevent this from happening. |
| |
| Call trace: |
| gs_read_complete+0x58/0x240 |
| usb_gadget_giveback_request+0x40/0x160 |
| dwc3_remove_requests+0x170/0x484 |
| dwc3_ep0_out_start+0xb0/0x1d4 |
| __dwc3_gadget_start+0x25c/0x720 |
| kretprobe_trampoline.cfi_jt+0x0/0x8 |
| kretprobe_trampoline.cfi_jt+0x0/0x8 |
| udc_bind_to_driver+0x1d8/0x300 |
| usb_gadget_probe_driver+0xa8/0x1dc |
| gadget_dev_desc_UDC_store+0x13c/0x188 |
| configfs_write_iter+0x160/0x1f4 |
| vfs_write+0x2d0/0x40c |
| ksys_write+0x7c/0xf0 |
| __arm64_sys_write+0x20/0x30 |
| invoke_syscall+0x60/0x150 |
| el0_svc_common+0x8c/0xf8 |
| do_el0_svc+0x28/0xa0 |
| el0_svc+0x24/0x84 |
| |
| The Linux kernel CVE team has assigned CVE-2024-57915 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.27 with commit c1dca562be8ada614ef193aa246c6f8705bcd6b9 and fixed in 5.4.290 with commit f5f33fb57aae12e4b0add79e0242f458ea0bc510 |
| Issue introduced in 2.6.27 with commit c1dca562be8ada614ef193aa246c6f8705bcd6b9 and fixed in 5.10.234 with commit 1062b648bff63ed62b2d47a045e08ea9741d98ea |
| Issue introduced in 2.6.27 with commit c1dca562be8ada614ef193aa246c6f8705bcd6b9 and fixed in 5.15.177 with commit d2de56cc45ee447f005d63217e84988b4f02faa9 |
| Issue introduced in 2.6.27 with commit c1dca562be8ada614ef193aa246c6f8705bcd6b9 and fixed in 6.1.125 with commit 3d730e8758c75b68a0152ee1ac48a270ea6725b4 |
| Issue introduced in 2.6.27 with commit c1dca562be8ada614ef193aa246c6f8705bcd6b9 and fixed in 6.6.72 with commit 0c50f00cc29948184af05bda31392fff5821f4f3 |
| Issue introduced in 2.6.27 with commit c1dca562be8ada614ef193aa246c6f8705bcd6b9 and fixed in 6.12.10 with commit 8e122d780a0f19aefd700dbd0b0e3ed3af0ae97f |
| Issue introduced in 2.6.27 with commit c1dca562be8ada614ef193aa246c6f8705bcd6b9 and fixed in 6.13 with commit 13014969cbf07f18d62ceea40bd8ca8ec9d36cec |
| |
| 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-2024-57915 |
| 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/gadget/function/u_serial.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/f5f33fb57aae12e4b0add79e0242f458ea0bc510 |
| https://git.kernel.org/stable/c/1062b648bff63ed62b2d47a045e08ea9741d98ea |
| https://git.kernel.org/stable/c/d2de56cc45ee447f005d63217e84988b4f02faa9 |
| https://git.kernel.org/stable/c/3d730e8758c75b68a0152ee1ac48a270ea6725b4 |
| https://git.kernel.org/stable/c/0c50f00cc29948184af05bda31392fff5821f4f3 |
| https://git.kernel.org/stable/c/8e122d780a0f19aefd700dbd0b0e3ed3af0ae97f |
| https://git.kernel.org/stable/c/13014969cbf07f18d62ceea40bd8ca8ec9d36cec |
