CVE-2024-27431
Description
In the Linux kernel, the following vulnerability has been resolved: cpumap: Zero-initialise xdp_rxq_info struct before running XDP program When running an XDP program that is attached to a cpumap entry, we don't initialise the xdp_rxq_info data structure being used in the xdp_buff that backs the XDP program invocation. Tobias noticed that this leads to random values being returned as the xdp_md->rx_queue_index value for XDP programs running in a cpumap. This means we're basically returning the contents of the uninitialised memory, which is bad. Fix this by zero-initialising the rxq data structure before running the XDP program.
How to fix
- linux linux_kernel5.10.213, 5.15.152, 6.1.82, 6.6.22, 6.7.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.9 ≤ v < 5.10.213, 5.11 ≤ v < 5.15.152, 5.16 ≤ v < 6.1.82, 6.2 ≤ v < 6.6.22, 6.7 ≤ v < 6.7.10, 6.8 | 5.10.213, 5.15.152, 6.1.82, 6.6.22, 6.7.10 |
| debian debian_linux | 10.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.