| 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-2022-49575: tcp: Fix a data-race around sysctl_tcp_thin_linear_timeouts. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tcp: Fix a data-race around sysctl_tcp_thin_linear_timeouts. |
| |
| While reading sysctl_tcp_thin_linear_timeouts, it can be changed |
| concurrently. Thus, we need to add READ_ONCE() to its reader. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49575 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.34 with commit 36e31b0af58728071e8023cf8e20c5166b700717 and fixed in 4.19.254 with commit f4b0295be9a3c4260de4585fac4062e602a88ac7 |
| Issue introduced in 2.6.34 with commit 36e31b0af58728071e8023cf8e20c5166b700717 and fixed in 5.4.208 with commit 492f3713b282c0e67e951cd804edd22eccc25412 |
| Issue introduced in 2.6.34 with commit 36e31b0af58728071e8023cf8e20c5166b700717 and fixed in 5.10.134 with commit cc133e4f4bc225079198192623945bb872c08143 |
| Issue introduced in 2.6.34 with commit 36e31b0af58728071e8023cf8e20c5166b700717 and fixed in 5.15.58 with commit 404c53ccdebd11f96954f4070cffac8e0b4d5cb6 |
| Issue introduced in 2.6.34 with commit 36e31b0af58728071e8023cf8e20c5166b700717 and fixed in 5.18.15 with commit a0f96c4f179cb3560078cefccef105e8f1701210 |
| Issue introduced in 2.6.34 with commit 36e31b0af58728071e8023cf8e20c5166b700717 and fixed in 5.19 with commit 7c6f2a86ca590d5187a073d987e9599985fb1c7c |
| |
| 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-2022-49575 |
| 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_timer.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/f4b0295be9a3c4260de4585fac4062e602a88ac7 |
| https://git.kernel.org/stable/c/492f3713b282c0e67e951cd804edd22eccc25412 |
| https://git.kernel.org/stable/c/cc133e4f4bc225079198192623945bb872c08143 |
| https://git.kernel.org/stable/c/404c53ccdebd11f96954f4070cffac8e0b4d5cb6 |
| https://git.kernel.org/stable/c/a0f96c4f179cb3560078cefccef105e8f1701210 |
| https://git.kernel.org/stable/c/7c6f2a86ca590d5187a073d987e9599985fb1c7c |
