| 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-2022-49633: icmp: Fix data-races around sysctl_icmp_echo_enable_probe. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| icmp: Fix data-races around sysctl_icmp_echo_enable_probe. |
| |
| While reading sysctl_icmp_echo_enable_probe, it can be changed |
| concurrently. Thus, we need to add READ_ONCE() to its readers. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49633 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.13 with commit d329ea5bd8845f0b196bf41b18b6173340d6e0e4 and fixed in 5.15.56 with commit cce955efa0ab81f7fb72e22beed372054c86005c |
| Issue introduced in 5.13 with commit d329ea5bd8845f0b196bf41b18b6173340d6e0e4 and fixed in 5.18.13 with commit 05c615033174f1d19374f42285ccd8e9af13e427 |
| Issue introduced in 5.13 with commit d329ea5bd8845f0b196bf41b18b6173340d6e0e4 and fixed in 5.19 with commit 4a2f7083cc6cb72dade9a63699ca352fad26d1cd |
| |
| 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-2022-49633 |
| 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/icmp.c |
| net/ipv6/icmp.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/cce955efa0ab81f7fb72e22beed372054c86005c |
| https://git.kernel.org/stable/c/05c615033174f1d19374f42285ccd8e9af13e427 |
| https://git.kernel.org/stable/c/4a2f7083cc6cb72dade9a63699ca352fad26d1cd |
