| 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-2024-43852: hwmon: (ltc2991) re-order conditions to fix off by one bug |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| hwmon: (ltc2991) re-order conditions to fix off by one bug |
| |
| LTC2991_T_INT_CH_NR is 4. The st->temp_en[] array has LTC2991_MAX_CHANNEL |
| (4) elements. Thus if "channel" is equal to LTC2991_T_INT_CH_NR then we |
| have read one element beyond the end of the array. Flip the conditions |
| around so that we check if "channel" is valid before using it as an array |
| index. |
| |
| The Linux kernel CVE team has assigned CVE-2024-43852 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.7 with commit 2b9ea4262ae9114b0b86ac893b4d6175d8520001 and fixed in 6.10.3 with commit c180311c0a520692e2d0e9ca44dcd6c2ff1b41c4 |
| Issue introduced in 6.7 with commit 2b9ea4262ae9114b0b86ac893b4d6175d8520001 and fixed in 6.11 with commit 99bf7c2eccff82760fa23ce967cc67c8c219c6a6 |
| |
| 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-2024-43852 |
| 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/hwmon/ltc2991.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/c180311c0a520692e2d0e9ca44dcd6c2ff1b41c4 |
| https://git.kernel.org/stable/c/99bf7c2eccff82760fa23ce967cc67c8c219c6a6 |
