CVE-2022-49590

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))

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxdf2cf4a78e488d26728590cb3c6b4fe4c4862c77 < a84b4afaca2573ed3aed1f8854aefe3ca5a82e72affected
LinuxLinuxdf2cf4a78e488d26728590cb3c6b4fe4c4862c77 < d77969e7d4ccc26bf1f414a39ef35050a83ba6d5affected
LinuxLinuxdf2cf4a78e488d26728590cb3c6b4fe4c4862c77 < ed876e99ccf417b8bd7fd8408ba5e8b008e46cc8affected
LinuxLinuxdf2cf4a78e488d26728590cb3c6b4fe4c4862c77 < 1656ecaddf90e2a070ec2d2404cdae3edf80facaaffected
LinuxLinuxdf2cf4a78e488d26728590cb3c6b4fe4c4862c77 < 473aad9ad57ff760005377e6f45a2ad4210e08ceaffected
LinuxLinuxdf2cf4a78e488d26728590cb3c6b4fe4c4862c77 < 260446eb8e5541402b271343a4516f2b33dec1e4affected
LinuxLinuxdf2cf4a78e488d26728590cb3c6b4fe4c4862c77 < 46307adceb67bdf2ec38408dd9cebc378a6b5c46affected
LinuxLinuxdf2cf4a78e488d26728590cb3c6b4fe4c4862c77 < f6da2267e71106474fbc0943dc24928b9cb79119affected
LinuxLinux4.3affected
LinuxLinux0 < 4.3unaffected
LinuxLinux4.9.325 <= 4.9.*unaffected
LinuxLinux4.14.290 <= 4.14.*unaffected
LinuxLinux4.19.254 <= 4.19.*unaffected
LinuxLinux5.4.208 <= 5.4.*unaffected
LinuxLinux5.10.134 <= 5.10.*unaffected
LinuxLinux5.15.58 <= 5.15.*unaffected
LinuxLinux5.18.15 <= 5.18.*unaffected
LinuxLinux5.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References