CVE-2022-49589
Last modified
CVE-2022-49589 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. 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);. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
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);
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 3.18, < 4.19.255 | — |
| Linux | Linux Kernel | >= 4.20, < 5.4.209 | — |
| Linux | Linux Kernel | >= 5.5, < 5.10.135 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.59 | — |
| Linux | Linux Kernel | >= 5.16, < 5.18.15 | — |
| Linux | Linux Kernel | 5.19 | Rc1 |
References
- https://git.kernel.org/stable/c/8ebcc62c738f68688ee7c6fec2efe5bc6d3d7e60Mailing List, Patch
- https://git.kernel.org/stable/c/9eeb3a7702998bdccbfcc37997b5dd9215b9a7f7Mailing List, Patch
- https://git.kernel.org/stable/c/b399ffafffba39f47b731b26a5da1dc0ffc4b3adMailing List, Patch
- https://git.kernel.org/stable/c/c2954671010cd1127d1ffa328c6e6f8e99930982Mailing List, Patch
- https://git.kernel.org/stable/c/c721324afc589f8ea54bae04756b150aeaae5fa4Mailing List, Patch
- https://git.kernel.org/stable/c/e20dd1b0e0ea15bee1e528536a0840dba972ca0eMailing List, Patch
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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