CVE-2022-49590
igmp: Fix data-races around sysctl_igmp_llm_reports.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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))
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.3
References 8
git.kernel.org
- stable/c/a84b4afaca2573ed3aed1f8854aefe3ca5a82e72
- stable/c/d77969e7d4ccc26bf1f414a39ef35050a83ba6d5
- stable/c/ed876e99ccf417b8bd7fd8408ba5e8b008e46cc8
- stable/c/1656ecaddf90e2a070ec2d2404cdae3edf80faca
- stable/c/473aad9ad57ff760005377e6f45a2ad4210e08ce
- stable/c/260446eb8e5541402b271343a4516f2b33dec1e4
- stable/c/46307adceb67bdf2ec38408dd9cebc378a6b5c46
- stable/c/f6da2267e71106474fbc0943dc24928b9cb79119