| 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-2022-49571: tcp: Fix data-races around sysctl_tcp_max_reordering. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tcp: Fix data-races around sysctl_tcp_max_reordering. |
| |
| While reading sysctl_tcp_max_reordering, it can be changed |
| concurrently. Thus, we need to add READ_ONCE() to its readers. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49571 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.19 with commit dca145ffaa8d39ea1904491ac81b92b7049372c0 and fixed in 4.19.254 with commit 5e38cee24f19d19280c68f1ac8bf6790d607f60a |
| Issue introduced in 3.19 with commit dca145ffaa8d39ea1904491ac81b92b7049372c0 and fixed in 5.4.208 with commit 50a1d3d097503a90cf84ebe120afcde37e9c33b3 |
| Issue introduced in 3.19 with commit dca145ffaa8d39ea1904491ac81b92b7049372c0 and fixed in 5.10.134 with commit 064852663308c801861bd54789d81421fa4c2928 |
| Issue introduced in 3.19 with commit dca145ffaa8d39ea1904491ac81b92b7049372c0 and fixed in 5.15.58 with commit ce3731c61589ed73364a5b55ce34131762ef9b60 |
| Issue introduced in 3.19 with commit dca145ffaa8d39ea1904491ac81b92b7049372c0 and fixed in 5.18.15 with commit 46deb91ac8a790286ad6d24cf92e7ab0ab2582bb |
| Issue introduced in 3.19 with commit dca145ffaa8d39ea1904491ac81b92b7049372c0 and fixed in 5.19 with commit a11e5b3e7a59fde1a90b0eaeaa82320495cf8cae |
| |
| 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-2022-49571 |
| 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: |
| net/ipv4/tcp_input.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/5e38cee24f19d19280c68f1ac8bf6790d607f60a |
| https://git.kernel.org/stable/c/50a1d3d097503a90cf84ebe120afcde37e9c33b3 |
| https://git.kernel.org/stable/c/064852663308c801861bd54789d81421fa4c2928 |
| https://git.kernel.org/stable/c/ce3731c61589ed73364a5b55ce34131762ef9b60 |
| https://git.kernel.org/stable/c/46deb91ac8a790286ad6d24cf92e7ab0ab2582bb |
| https://git.kernel.org/stable/c/a11e5b3e7a59fde1a90b0eaeaa82320495cf8cae |
