| 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-2022-49598: tcp: Fix data-races around sysctl_tcp_mtu_probing. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tcp: Fix data-races around sysctl_tcp_mtu_probing. |
| |
| While reading sysctl_tcp_mtu_probing, it can be changed concurrently. |
| Thus, we need to add READ_ONCE() to its readers. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49598 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.17 with commit 5d424d5a674f782d0659a3b66d951f412901faee and fixed in 4.19.254 with commit 7e8fc428a7f680f1c4994a40e52d7f95a9a93038 |
| Issue introduced in 2.6.17 with commit 5d424d5a674f782d0659a3b66d951f412901faee and fixed in 5.4.208 with commit f966773e13cdd3f12baa90071b7b660f6c633ccb |
| Issue introduced in 2.6.17 with commit 5d424d5a674f782d0659a3b66d951f412901faee and fixed in 5.10.134 with commit 77a04845f0d28a3561494a5f3121488470a968a4 |
| Issue introduced in 2.6.17 with commit 5d424d5a674f782d0659a3b66d951f412901faee and fixed in 5.15.58 with commit aabe9438fdfe004e021d5a206227ec105dbe2416 |
| Issue introduced in 2.6.17 with commit 5d424d5a674f782d0659a3b66d951f412901faee and fixed in 5.18.15 with commit b0920ca09d9ce19980c8391b9002455baa9c1417 |
| Issue introduced in 2.6.17 with commit 5d424d5a674f782d0659a3b66d951f412901faee and fixed in 5.19 with commit f47d00e077e7d61baf69e46dde3210c886360207 |
| |
| 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-2022-49598 |
| 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 |
| 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/7e8fc428a7f680f1c4994a40e52d7f95a9a93038 |
| https://git.kernel.org/stable/c/f966773e13cdd3f12baa90071b7b660f6c633ccb |
| https://git.kernel.org/stable/c/77a04845f0d28a3561494a5f3121488470a968a4 |
| https://git.kernel.org/stable/c/aabe9438fdfe004e021d5a206227ec105dbe2416 |
| https://git.kernel.org/stable/c/b0920ca09d9ce19980c8391b9002455baa9c1417 |
| https://git.kernel.org/stable/c/f47d00e077e7d61baf69e46dde3210c886360207 |
