| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-26843: efi: runtime: Fix potential overflow of soft-reserved region size |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| efi: runtime: Fix potential overflow of soft-reserved region size |
| |
| md_size will have been narrowed if we have >= 4GB worth of pages in a |
| soft-reserved region. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26843 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.5 with commit 16993c0f0a43213e23666ea40e9163887f593ac7 and fixed in 5.10.211 with commit 4fff3d735baea104017f2e3c245e27cdc79f2426 |
| Issue introduced in 5.5 with commit 16993c0f0a43213e23666ea40e9163887f593ac7 and fixed in 5.15.150 with commit 4aa36b62c3eaa869860bf78b1146e9f2b5f782a9 |
| Issue introduced in 5.5 with commit 16993c0f0a43213e23666ea40e9163887f593ac7 and fixed in 6.1.80 with commit 700c3f642c32721f246e09d3a9511acf40ae42be |
| Issue introduced in 5.5 with commit 16993c0f0a43213e23666ea40e9163887f593ac7 and fixed in 6.6.19 with commit cf3d6813601fe496de7f023435e31bfffa74ae70 |
| Issue introduced in 5.5 with commit 16993c0f0a43213e23666ea40e9163887f593ac7 and fixed in 6.7.7 with commit 156cb12ffdcf33883304f0db645e1eadae712fe0 |
| Issue introduced in 5.5 with commit 16993c0f0a43213e23666ea40e9163887f593ac7 and fixed in 6.8 with commit de1034b38a346ef6be25fe8792f5d1e0684d5ff4 |
| |
| 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-2024-26843 |
| 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/firmware/efi/arm-runtime.c |
| drivers/firmware/efi/riscv-runtime.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/4fff3d735baea104017f2e3c245e27cdc79f2426 |
| https://git.kernel.org/stable/c/4aa36b62c3eaa869860bf78b1146e9f2b5f782a9 |
| https://git.kernel.org/stable/c/700c3f642c32721f246e09d3a9511acf40ae42be |
| https://git.kernel.org/stable/c/cf3d6813601fe496de7f023435e31bfffa74ae70 |
| https://git.kernel.org/stable/c/156cb12ffdcf33883304f0db645e1eadae712fe0 |
| https://git.kernel.org/stable/c/de1034b38a346ef6be25fe8792f5d1e0684d5ff4 |
