| 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-2024-42236: usb: gadget: configfs: Prevent OOB read/write in usb_string_copy() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usb: gadget: configfs: Prevent OOB read/write in usb_string_copy() |
| |
| Userspace provided string 's' could trivially have the length zero. Left |
| unchecked this will firstly result in an OOB read in the form |
| `if (str[0 - 1] == '\n') followed closely by an OOB write in the form |
| `str[0 - 1] = '\0'`. |
| |
| There is already a validating check to catch strings that are too long. |
| Let's supply an additional check for invalid strings that are too short. |
| |
| The Linux kernel CVE team has assigned CVE-2024-42236 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.318 with commit a444c3fc264119801575ab086e03fb4952f23fd0 |
| Fixed in 5.4.280 with commit c95fbdde87e39e5e0ae27f28bf6711edfb985caa |
| Fixed in 5.10.222 with commit e8474a10c535e6a2024c3b06e37e4a3a23beb490 |
| Fixed in 5.15.163 with commit 72b8ee0d9826e8ed00e0bdfce3e46b98419b37ce |
| Fixed in 6.1.100 with commit 2d16f63d8030903e5031853e79d731ee5d474e70 |
| Fixed in 6.6.41 with commit d1205033e912f9332c1dbefa812e6ceb0575ce0a |
| Fixed in 6.9.10 with commit eecfefad0953b2f31aaefa058f7f348ff39c4bba |
| Fixed in 6.10 with commit 6d3c721e686ea6c59e18289b400cc95c76e927e0 |
| |
| 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-2024-42236 |
| 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/configfs.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/a444c3fc264119801575ab086e03fb4952f23fd0 |
| https://git.kernel.org/stable/c/c95fbdde87e39e5e0ae27f28bf6711edfb985caa |
| https://git.kernel.org/stable/c/e8474a10c535e6a2024c3b06e37e4a3a23beb490 |
| https://git.kernel.org/stable/c/72b8ee0d9826e8ed00e0bdfce3e46b98419b37ce |
| https://git.kernel.org/stable/c/2d16f63d8030903e5031853e79d731ee5d474e70 |
| https://git.kernel.org/stable/c/d1205033e912f9332c1dbefa812e6ceb0575ce0a |
| https://git.kernel.org/stable/c/eecfefad0953b2f31aaefa058f7f348ff39c4bba |
| https://git.kernel.org/stable/c/6d3c721e686ea6c59e18289b400cc95c76e927e0 |
