| 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-2024-26988: init/main.c: Fix potential static_command_line memory overflow |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| init/main.c: Fix potential static_command_line memory overflow |
| |
| We allocate memory of size 'xlen + strlen(boot_command_line) + 1' for |
| static_command_line, but the strings copied into static_command_line are |
| extra_command_line and command_line, rather than extra_command_line and |
| boot_command_line. |
| |
| When strlen(command_line) > strlen(boot_command_line), static_command_line |
| will overflow. |
| |
| This patch just recovers strlen(command_line) which was miss-consolidated |
| with strlen(boot_command_line) in the commit f5c7310ac73e ("init/main: add |
| checks for the return value of memblock_alloc*()") |
| |
| The Linux kernel CVE team has assigned CVE-2024-26988 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.1 with commit f5c7310ac73ea270e3a1acdb73d1b4817f11fd67 and fixed in 5.10.216 with commit 2ef607ea103616aec0289f1b65d103d499fa903a |
| Issue introduced in 5.1 with commit f5c7310ac73ea270e3a1acdb73d1b4817f11fd67 and fixed in 5.15.157 with commit 0dc727a4e05400205358a22c3d01ccad2c8e1fe4 |
| Issue introduced in 5.1 with commit f5c7310ac73ea270e3a1acdb73d1b4817f11fd67 and fixed in 6.1.88 with commit 76c2f4d426a5358fced5d5990744d46f10a4ccea |
| Issue introduced in 5.1 with commit f5c7310ac73ea270e3a1acdb73d1b4817f11fd67 and fixed in 6.6.29 with commit 81cf85ae4f2dd5fa3e43021782aa72c4c85558e8 |
| Issue introduced in 5.1 with commit f5c7310ac73ea270e3a1acdb73d1b4817f11fd67 and fixed in 6.8.8 with commit 936a02b5a9630c5beb0353c3085cc49d86c57034 |
| Issue introduced in 5.1 with commit f5c7310ac73ea270e3a1acdb73d1b4817f11fd67 and fixed in 6.9 with commit 46dad3c1e57897ab9228332f03e1c14798d2d3b9 |
| |
| 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-2024-26988 |
| 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: |
| init/main.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/2ef607ea103616aec0289f1b65d103d499fa903a |
| https://git.kernel.org/stable/c/0dc727a4e05400205358a22c3d01ccad2c8e1fe4 |
| https://git.kernel.org/stable/c/76c2f4d426a5358fced5d5990744d46f10a4ccea |
| https://git.kernel.org/stable/c/81cf85ae4f2dd5fa3e43021782aa72c4c85558e8 |
| https://git.kernel.org/stable/c/936a02b5a9630c5beb0353c3085cc49d86c57034 |
| https://git.kernel.org/stable/c/46dad3c1e57897ab9228332f03e1c14798d2d3b9 |
