| 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-2022-49573: tcp: Fix a data-race around sysctl_tcp_early_retrans. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tcp: Fix a data-race around sysctl_tcp_early_retrans. |
| |
| While reading sysctl_tcp_early_retrans, it can be changed concurrently. |
| Thus, we need to add READ_ONCE() to its reader. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49573 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.5 with commit eed530b6c67624db3f2cf477bac7c4d005d8f7ba and fixed in 4.19.254 with commit 488d3ad98ef7cddce7054193dbae6b4349c6807d |
| Issue introduced in 3.5 with commit eed530b6c67624db3f2cf477bac7c4d005d8f7ba and fixed in 5.4.208 with commit 83767fe800a311370330d4ec83aa76093b744a80 |
| Issue introduced in 3.5 with commit eed530b6c67624db3f2cf477bac7c4d005d8f7ba and fixed in 5.10.134 with commit 11e8b013d16e5db63f8f76acceb5b86964098aaa |
| Issue introduced in 3.5 with commit eed530b6c67624db3f2cf477bac7c4d005d8f7ba and fixed in 5.15.58 with commit 5037ca9e4b169cc9aed0174d658c3d81fdaf8ea5 |
| Issue introduced in 3.5 with commit eed530b6c67624db3f2cf477bac7c4d005d8f7ba and fixed in 5.18.15 with commit d5975f6376ce90c2c483ae36bf88c9cface4c13b |
| Issue introduced in 3.5 with commit eed530b6c67624db3f2cf477bac7c4d005d8f7ba and fixed in 5.19 with commit 52e65865deb6a36718a463030500f16530eaab74 |
| |
| 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-2022-49573 |
| 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_output.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/488d3ad98ef7cddce7054193dbae6b4349c6807d |
| https://git.kernel.org/stable/c/83767fe800a311370330d4ec83aa76093b744a80 |
| https://git.kernel.org/stable/c/11e8b013d16e5db63f8f76acceb5b86964098aaa |
| https://git.kernel.org/stable/c/5037ca9e4b169cc9aed0174d658c3d81fdaf8ea5 |
| https://git.kernel.org/stable/c/d5975f6376ce90c2c483ae36bf88c9cface4c13b |
| https://git.kernel.org/stable/c/52e65865deb6a36718a463030500f16530eaab74 |
