CVE-2024-26853: 
Linux Kernel vulnerability analysis and mitigation

CVE-2024-26853 affects the Linux kernel's Intel(R) Ethernet Controller I225-LM/I225-V driver (igc). The vulnerability was discovered in early 2024 and involves a memory corruption issue that occurs when handling frame transmission in XDP_REDIRECT operations (Kernel Git).

The vulnerability stems from incorrect handling of frame returns in XDPREDIRECT operations within the igc driver. When a frame cannot be transmitted due to a full queue, the driver incorrectly calls xdpreturnframerxnapi inside igcxdpxmit, while this responsibility belongs to the caller of ndoxdpxmit. This double-handling of frame returns leads to memory corruption, as bqxmit_all expects to return all frames after the last successfully transmitted one (Kernel Git).

The vulnerability can result in memory corruption when generating high amounts of network traffic through the affected Intel Ethernet Controller. This can lead to kernel panic and system instability, potentially causing denial of service conditions (Red Hat CVE).

The issue has been fixed in the Linux kernel through a patch that modifies the igcxdpxmit function to properly handle frame transmission failures. The fix involves breaking the transmission loop on the first failure without calling xdpreturnframerxnapi, allowing the caller to handle the frame return (Kernel Git).