| 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-2024-42247: wireguard: allowedips: avoid unaligned 64-bit memory accesses |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wireguard: allowedips: avoid unaligned 64-bit memory accesses |
| |
| On the parisc platform, the kernel issues kernel warnings because |
| swap_endian() tries to load a 128-bit IPv6 address from an unaligned |
| memory location: |
| |
| Kernel: unaligned access to 0x55f4688c in wg_allowedips_insert_v6+0x2c/0x80 [wireguard] (iir 0xf3010df) |
| Kernel: unaligned access to 0x55f46884 in wg_allowedips_insert_v6+0x38/0x80 [wireguard] (iir 0xf2010dc) |
| |
| Avoid such unaligned memory accesses by instead using the |
| get_unaligned_be64() helper macro. |
| |
| [Jason: replace src[8] in original patch with src+8] |
| |
| The Linux kernel CVE team has assigned CVE-2024-42247 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.6 with commit e7096c131e5161fa3b8e52a650d7719d2857adfd and fixed in 5.10.222 with commit ae630de24efb123d7199a43256396d7758f4cb75 |
| Issue introduced in 5.6 with commit e7096c131e5161fa3b8e52a650d7719d2857adfd and fixed in 5.15.163 with commit b4764f0ad3d68de8a0b847c05f427afb86dd54e6 |
| Issue introduced in 5.6 with commit e7096c131e5161fa3b8e52a650d7719d2857adfd and fixed in 6.1.100 with commit 217978a29c6ceca76d3c640bf94bdf50c268d801 |
| Issue introduced in 5.6 with commit e7096c131e5161fa3b8e52a650d7719d2857adfd and fixed in 6.6.41 with commit 6638a203abad35fa636d59ac47bdbc4bc100fd74 |
| Issue introduced in 5.6 with commit e7096c131e5161fa3b8e52a650d7719d2857adfd and fixed in 6.9.10 with commit 2fb34bf76431e831f9863cd59adc0bd1f67b0fbf |
| Issue introduced in 5.6 with commit e7096c131e5161fa3b8e52a650d7719d2857adfd and fixed in 6.10 with commit 948f991c62a4018fb81d85804eeab3029c6209f8 |
| |
| 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-2024-42247 |
| 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/net/wireguard/allowedips.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/ae630de24efb123d7199a43256396d7758f4cb75 |
| https://git.kernel.org/stable/c/b4764f0ad3d68de8a0b847c05f427afb86dd54e6 |
| https://git.kernel.org/stable/c/217978a29c6ceca76d3c640bf94bdf50c268d801 |
| https://git.kernel.org/stable/c/6638a203abad35fa636d59ac47bdbc4bc100fd74 |
| https://git.kernel.org/stable/c/2fb34bf76431e831f9863cd59adc0bd1f67b0fbf |
| https://git.kernel.org/stable/c/948f991c62a4018fb81d85804eeab3029c6209f8 |
