| 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-2022-49574: tcp: Fix data-races around sysctl_tcp_recovery. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tcp: Fix data-races around sysctl_tcp_recovery. |
| |
| While reading sysctl_tcp_recovery, it can be changed concurrently. |
| Thus, we need to add READ_ONCE() to its readers. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49574 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.4 with commit 4f41b1c58a32537542f14c1150099131613a5e8a and fixed in 4.19.254 with commit c7a492db1f7c37c758a66915908677bd8bc5d368 |
| Issue introduced in 4.4 with commit 4f41b1c58a32537542f14c1150099131613a5e8a and fixed in 5.4.208 with commit 92c35113c63306091df9211375eebd0abd8c2160 |
| Issue introduced in 4.4 with commit 4f41b1c58a32537542f14c1150099131613a5e8a and fixed in 5.10.134 with commit d8781f7cd04091744f474a2bada74772084b9dc9 |
| Issue introduced in 4.4 with commit 4f41b1c58a32537542f14c1150099131613a5e8a and fixed in 5.15.58 with commit a31e2d0cb5cfa2aae3144cac04f25031d5d20fb4 |
| Issue introduced in 4.4 with commit 4f41b1c58a32537542f14c1150099131613a5e8a and fixed in 5.18.15 with commit 52ee7f5c4811ce6be1becd14d38ba1f8a8a0df81 |
| Issue introduced in 4.4 with commit 4f41b1c58a32537542f14c1150099131613a5e8a and fixed in 5.19 with commit e7d2ef837e14a971a05f60ea08c47f3fed1a36e4 |
| |
| 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-2022-49574 |
| 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 |
| net/ipv4/tcp_recovery.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/c7a492db1f7c37c758a66915908677bd8bc5d368 |
| https://git.kernel.org/stable/c/92c35113c63306091df9211375eebd0abd8c2160 |
| https://git.kernel.org/stable/c/d8781f7cd04091744f474a2bada74772084b9dc9 |
| https://git.kernel.org/stable/c/a31e2d0cb5cfa2aae3144cac04f25031d5d20fb4 |
| https://git.kernel.org/stable/c/52ee7f5c4811ce6be1becd14d38ba1f8a8a0df81 |
| https://git.kernel.org/stable/c/e7d2ef837e14a971a05f60ea08c47f3fed1a36e4 |
