| 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-2024-43825: iio: Fix the sorting functionality in iio_gts_build_avail_time_table |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| iio: Fix the sorting functionality in iio_gts_build_avail_time_table |
| |
| The sorting in iio_gts_build_avail_time_table is not working as intended. |
| It could result in an out-of-bounds access when the time is zero. |
| |
| Here are more details: |
| |
| 1. When the gts->itime_table[i].time_us is zero, e.g., the time |
| sequence is `3, 0, 1`, the inner for-loop will not terminate and do |
| out-of-bound writes. This is because once `times[j] > new`, the value |
| `new` will be added in the current position and the `times[j]` will be |
| moved to `j+1` position, which makes the if-condition always hold. |
| Meanwhile, idx will be added one, making the loop keep running without |
| termination and out-of-bound write. |
| 2. If none of the gts->itime_table[i].time_us is zero, the elements |
| will just be copied without being sorted as described in the comment |
| "Sort times from all tables to one and remove duplicates". |
| |
| For more details, please refer to |
| https://lore.kernel.org/all/6dd0d822-046c-4dd2-9532-79d7ab96ec05@gmail.com. |
| |
| The Linux kernel CVE team has assigned CVE-2024-43825 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.4 with commit 38416c28e16890b52fdd5eb73479299ec3f062f3 and fixed in 6.6.44 with commit 31ff8464ef540785344994986a010031410f9ff3 |
| Issue introduced in 6.4 with commit 38416c28e16890b52fdd5eb73479299ec3f062f3 and fixed in 6.10.3 with commit b5046de32fd1532c3f67065197fc1da82f0b5193 |
| Issue introduced in 6.4 with commit 38416c28e16890b52fdd5eb73479299ec3f062f3 and fixed in 6.11 with commit 5acc3f971a01be48d5ff4252d8f9cdb87998cdfb |
| |
| 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-2024-43825 |
| 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/iio/industrialio-gts-helper.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/31ff8464ef540785344994986a010031410f9ff3 |
| https://git.kernel.org/stable/c/b5046de32fd1532c3f67065197fc1da82f0b5193 |
| https://git.kernel.org/stable/c/5acc3f971a01be48d5ff4252d8f9cdb87998cdfb |
