CVE-2022-49590
What it is
In the Linux kernel, the following vulnerability has been resolved: igmp: Fix data-races around sysctl_igmp_llm_reports. While reading sysctl_igmp_llm_reports, 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. if (ipv4_is_local_multicast(pmc->multiaddr) && !READ_ONCE(net->ipv4.sysctl_igmp_llm_reports))
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 4.7 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-362 · Race condition
- Record status
- Modified
Affected
- Linux Kernel < 4.9.325
- Linux Kernel < 4.14.290
- Linux Kernel < 4.19.254
- Linux Kernel < 5.4.208
- Linux Kernel < 5.10.134
- Linux Kernel < 5.15.58
- Linux Kernel < 5.18.15
- Linux Kernel 5.19
Attack profile CVSS 3.1 · 4.7
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-49590.md and follow it. Check whether this project is affected by CVE-2022-49590. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/1656ecaddf90e2a070ec2d2404cdae3edf80faca
- https://git.kernel.org/stable/c/260446eb8e5541402b271343a4516f2b33dec1e4
- https://git.kernel.org/stable/c/46307adceb67bdf2ec38408dd9cebc378a6b5c46
- https://git.kernel.org/stable/c/473aad9ad57ff760005377e6f45a2ad4210e08ce
- https://git.kernel.org/stable/c/a84b4afaca2573ed3aed1f8854aefe3ca5a82e72
- https://git.kernel.org/stable/c/d77969e7d4ccc26bf1f414a39ef35050a83ba6d5
- https://git.kernel.org/stable/c/ed876e99ccf417b8bd7fd8408ba5e8b008e46cc8
- https://git.kernel.org/stable/c/f6da2267e71106474fbc0943dc24928b9cb79119
References
- https://git.kernel.org/stable/c/1656ecaddf90e2a070ec2d2404cdae3edf80faca
- https://git.kernel.org/stable/c/260446eb8e5541402b271343a4516f2b33dec1e4
- https://git.kernel.org/stable/c/46307adceb67bdf2ec38408dd9cebc378a6b5c46
- https://git.kernel.org/stable/c/473aad9ad57ff760005377e6f45a2ad4210e08ce
- https://git.kernel.org/stable/c/a84b4afaca2573ed3aed1f8854aefe3ca5a82e72
- https://git.kernel.org/stable/c/d77969e7d4ccc26bf1f414a39ef35050a83ba6d5
- https://git.kernel.org/stable/c/ed876e99ccf417b8bd7fd8408ba5e8b008e46cc8
- https://git.kernel.org/stable/c/f6da2267e71106474fbc0943dc24928b9cb79119