| 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-2022-49589: igmp: Fix data-races around sysctl_igmp_qrv. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| igmp: Fix data-races around sysctl_igmp_qrv. |
| |
| While reading sysctl_igmp_qrv, it can be changed concurrently. |
| Thus, we need to add READ_ONCE() to its readers. |
| |
| This test can be packed into a helper, so such changes will be in the |
| follow-up series after net is merged into net-next. |
| |
| qrv ?: READ_ONCE(net->ipv4.sysctl_igmp_qrv); |
| |
| The Linux kernel CVE team has assigned CVE-2022-49589 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.18 with commit a9fe8e29945d56f35235a3a0fba99b4cf181d211 and fixed in 4.19.255 with commit 9eeb3a7702998bdccbfcc37997b5dd9215b9a7f7 |
| Issue introduced in 3.18 with commit a9fe8e29945d56f35235a3a0fba99b4cf181d211 and fixed in 5.4.209 with commit e20dd1b0e0ea15bee1e528536a0840dba972ca0e |
| Issue introduced in 3.18 with commit a9fe8e29945d56f35235a3a0fba99b4cf181d211 and fixed in 5.10.135 with commit b399ffafffba39f47b731b26a5da1dc0ffc4b3ad |
| Issue introduced in 3.18 with commit a9fe8e29945d56f35235a3a0fba99b4cf181d211 and fixed in 5.15.59 with commit c721324afc589f8ea54bae04756b150aeaae5fa4 |
| Issue introduced in 3.18 with commit a9fe8e29945d56f35235a3a0fba99b4cf181d211 and fixed in 5.18.15 with commit c2954671010cd1127d1ffa328c6e6f8e99930982 |
| Issue introduced in 3.18 with commit a9fe8e29945d56f35235a3a0fba99b4cf181d211 and fixed in 5.19 with commit 8ebcc62c738f68688ee7c6fec2efe5bc6d3d7e60 |
| |
| 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-2022-49589 |
| 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: |
| drivers/net/amt.c |
| net/ipv4/igmp.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/9eeb3a7702998bdccbfcc37997b5dd9215b9a7f7 |
| https://git.kernel.org/stable/c/e20dd1b0e0ea15bee1e528536a0840dba972ca0e |
| https://git.kernel.org/stable/c/b399ffafffba39f47b731b26a5da1dc0ffc4b3ad |
| https://git.kernel.org/stable/c/c721324afc589f8ea54bae04756b150aeaae5fa4 |
| https://git.kernel.org/stable/c/c2954671010cd1127d1ffa328c6e6f8e99930982 |
| https://git.kernel.org/stable/c/8ebcc62c738f68688ee7c6fec2efe5bc6d3d7e60 |
