| 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-2022-49639: cipso: Fix data-races around sysctl. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| cipso: Fix data-races around sysctl. |
| |
| While reading cipso sysctl variables, they can be changed concurrently. |
| So, we need to add READ_ONCE() to avoid data-races. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49639 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.19 with commit 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and fixed in 4.9.324 with commit 2764f82bbc158d106693ae3ced3675cf4b963b35 |
| Issue introduced in 2.6.19 with commit 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and fixed in 4.14.289 with commit c321e99d2725d11f7e6a4ebd9ce752259f0bae81 |
| Issue introduced in 2.6.19 with commit 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and fixed in 4.19.253 with commit ca26ca5e2f3eeb3e6fe699cd6effa3b4b2aa8698 |
| Issue introduced in 2.6.19 with commit 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and fixed in 5.4.207 with commit 0e41a0f73ccb9be112a80bde3804a771633caaef |
| Issue introduced in 2.6.19 with commit 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and fixed in 5.10.132 with commit fe2a35fa2c4f9c8ce5ef970eb927031387f9446a |
| Issue introduced in 2.6.19 with commit 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and fixed in 5.15.56 with commit 07b0caf8aeb9b82e6ecc6c292a3e47c7fcdb1148 |
| Issue introduced in 2.6.19 with commit 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and fixed in 5.18.13 with commit 59e26906b89cc35bb54476498772b45cbc32323f |
| Issue introduced in 2.6.19 with commit 446fda4f26822b2d42ab3396aafcedf38a9ff2b6 and fixed in 5.19 with commit dd44f04b9214adb68ef5684ae87a81ba03632250 |
| |
| 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-2022-49639 |
| 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: |
| Documentation/networking/ip-sysctl.rst |
| net/ipv4/cipso_ipv4.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/2764f82bbc158d106693ae3ced3675cf4b963b35 |
| https://git.kernel.org/stable/c/c321e99d2725d11f7e6a4ebd9ce752259f0bae81 |
| https://git.kernel.org/stable/c/ca26ca5e2f3eeb3e6fe699cd6effa3b4b2aa8698 |
| https://git.kernel.org/stable/c/0e41a0f73ccb9be112a80bde3804a771633caaef |
| https://git.kernel.org/stable/c/fe2a35fa2c4f9c8ce5ef970eb927031387f9446a |
| https://git.kernel.org/stable/c/07b0caf8aeb9b82e6ecc6c292a3e47c7fcdb1148 |
| https://git.kernel.org/stable/c/59e26906b89cc35bb54476498772b45cbc32323f |
| https://git.kernel.org/stable/c/dd44f04b9214adb68ef5684ae87a81ba03632250 |
