CVE-2024-45030: linux Out-of-bounds Write

Vulnerability summary

CVE-2024-45030 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.48% chance of exploitation in the next 30 days, higher than 40.2% of scored vulnerabilities.

Timeline

1. 11-09-2024
   PublishedVulnerability first disclosed.
2. 05-08-2026
   Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: igb: cope with large MAX_SKB_FRAGS Sabrina reports that the igb driver does not cope well with large MAX_SKB_FRAG values: setting MAX_SKB_FRAG to 45 causes payload corruption on TX. An easy reproducer is to run ssh to connect to the machine. With MAX_SKB_FRAGS=17 it works, with MAX_SKB_FRAGS=45 it fails. This has been reported originally in https://bugzilla.redhat.com/show_bug.cgi?id=2265320 The root cause of the issue is that the driver does not take into account properly the (possibly large) shared info size when selecting the ring layout, and will try to fit two packets inside the same 4K page even when the 1st fraglist will trump over the 2nd head. Address the issue by checking if 2K buffers are insufficient.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.