| 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-2024-35922: fbmon: prevent division by zero in fb_videomode_from_videomode() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| fbmon: prevent division by zero in fb_videomode_from_videomode() |
| |
| The expression htotal * vtotal can have a zero value on |
| overflow. It is necessary to prevent division by zero like in |
| fb_var_to_videomode(). |
| |
| Found by Linux Verification Center (linuxtesting.org) with Svace. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35922 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.312 with commit 1fb52bc1de55e9e0bdf71fe078efd4da0889710f |
| Fixed in 5.4.274 with commit 72d091b7515e0532ee015e144c906f3bcfdd6270 |
| Fixed in 5.10.215 with commit 951838fee462aa01fa2a6a91d56f9a495082e7f0 |
| Fixed in 5.15.155 with commit 48d6bcfc31751ca2e753d901a2d82f27edf8a029 |
| Fixed in 6.1.86 with commit 664206ff8b019bcd1e55b10b2eea3add8761b971 |
| Fixed in 6.6.27 with commit 3d4b909704bf2114f64f87363fa22b5ef8ac4a33 |
| Fixed in 6.8.6 with commit 1b107d637fed68a787da77a3514ad06e57abd0b4 |
| Fixed in 6.9 with commit c2d953276b8b27459baed1277a4fdd5dd9bd4126 |
| |
| 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-2024-35922 |
| 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/video/fbdev/core/fbmon.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/1fb52bc1de55e9e0bdf71fe078efd4da0889710f |
| https://git.kernel.org/stable/c/72d091b7515e0532ee015e144c906f3bcfdd6270 |
| https://git.kernel.org/stable/c/951838fee462aa01fa2a6a91d56f9a495082e7f0 |
| https://git.kernel.org/stable/c/48d6bcfc31751ca2e753d901a2d82f27edf8a029 |
| https://git.kernel.org/stable/c/664206ff8b019bcd1e55b10b2eea3add8761b971 |
| https://git.kernel.org/stable/c/3d4b909704bf2114f64f87363fa22b5ef8ac4a33 |
| https://git.kernel.org/stable/c/1b107d637fed68a787da77a3514ad06e57abd0b4 |
| https://git.kernel.org/stable/c/c2d953276b8b27459baed1277a4fdd5dd9bd4126 |
