| 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-2022-49577: udp: Fix a data-race around sysctl_udp_l3mdev_accept. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| udp: Fix a data-race around sysctl_udp_l3mdev_accept. |
| |
| While reading sysctl_udp_l3mdev_accept, it can be changed concurrently. |
| Thus, we need to add READ_ONCE() to its reader. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49577 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.11 with commit 63a6fff353d01da5a22b72670c434bf12fa0e3b8 and fixed in 5.4.208 with commit f39b03bd727a8fea62e82f10fe2e0d753b9930ff |
| Issue introduced in 4.11 with commit 63a6fff353d01da5a22b72670c434bf12fa0e3b8 and fixed in 5.10.134 with commit fcaef69c79ec222e55643e666b80b221e70fa6a8 |
| Issue introduced in 4.11 with commit 63a6fff353d01da5a22b72670c434bf12fa0e3b8 and fixed in 5.15.58 with commit 3f2ac2d6511bb0652abf4d7388d65bb9ff1c641c |
| Issue introduced in 4.11 with commit 63a6fff353d01da5a22b72670c434bf12fa0e3b8 and fixed in 5.18.15 with commit cb0d28934ca10f99c47e2c6f451405d6c954fe48 |
| Issue introduced in 4.11 with commit 63a6fff353d01da5a22b72670c434bf12fa0e3b8 and fixed in 5.19 with commit 3d72bb4188c708bb16758c60822fc4dda7a95174 |
| |
| 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-2022-49577 |
| 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: |
| include/net/udp.h |
| |
| |
| 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/f39b03bd727a8fea62e82f10fe2e0d753b9930ff |
| https://git.kernel.org/stable/c/fcaef69c79ec222e55643e666b80b221e70fa6a8 |
| https://git.kernel.org/stable/c/3f2ac2d6511bb0652abf4d7388d65bb9ff1c641c |
| https://git.kernel.org/stable/c/cb0d28934ca10f99c47e2c6f451405d6c954fe48 |
| https://git.kernel.org/stable/c/3d72bb4188c708bb16758c60822fc4dda7a95174 |
