CVE-2024-45030
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk11th percentile - higher than 11% of all known CVEs
Summary
In the Linux kernel's igb driver (Intel Gigabit Ethernet), there is an issue with large MAX_SKB_FRAGS values, causing payload corruption during transmission. The root cause is improper handling of shared info size when selecting ring layout, leading to attempts to fit two packets in one 4K page. The fix checks if 2K buffers are insufficient.
Risk Assessment
The risk includes data corruption on network transmissions, which could lead to communication errors or data integrity issues on systems using Intel Gigabit adapters.
Recommendation
Apply the kernel patch for the igb driver and update to a kernel version containing this fix.
Original NVD description (English source)
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.