| 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-2022-49603: ip: Fix data-races around sysctl_ip_fwd_update_priority. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ip: Fix data-races around sysctl_ip_fwd_update_priority. |
| |
| While reading sysctl_ip_fwd_update_priority, it can be changed |
| concurrently. Thus, we need to add READ_ONCE() to its readers. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49603 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.19 with commit 432e05d328921c68c35bfdeff7d7b7400b8e3d1a and fixed in 5.10.134 with commit 11038fa781ab916535c53351537b22d6d405667d |
| Issue introduced in 4.19 with commit 432e05d328921c68c35bfdeff7d7b7400b8e3d1a and fixed in 5.15.58 with commit 351f81f7d7185d18a9ff76f8f8c2fa8c4eea563b |
| Issue introduced in 4.19 with commit 432e05d328921c68c35bfdeff7d7b7400b8e3d1a and fixed in 5.18.15 with commit bcc03369d3277ae075ed421f0c8bf4adb5e65b74 |
| Issue introduced in 4.19 with commit 432e05d328921c68c35bfdeff7d7b7400b8e3d1a and fixed in 5.19 with commit 7bf9e18d9a5e99e3c83482973557e9f047b051e7 |
| |
| 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-2022-49603 |
| 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/ethernet/mellanox/mlxsw/spectrum_router.c |
| net/ipv4/ip_forward.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/11038fa781ab916535c53351537b22d6d405667d |
| https://git.kernel.org/stable/c/351f81f7d7185d18a9ff76f8f8c2fa8c4eea563b |
| https://git.kernel.org/stable/c/bcc03369d3277ae075ed421f0c8bf4adb5e65b74 |
| https://git.kernel.org/stable/c/7bf9e18d9a5e99e3c83482973557e9f047b051e7 |
