Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netmem: prevent TX of unreadable skbs Currently on stable trees we have support for netmem/devmem RX but not TX. It is not safe to forward/redirect an RX unreadable netmem packet into the device's TX path, as the device may call dma-mapping APIs on dma addrs that should not be passed to it. Fix this by preventing the xmit of unreadable skbs. Tested by configuring tc redirect: sudo tc qdisc add dev eth1 ingress sudo tc filter add dev eth1 ingress protocol ip prio 1 flower ip_proto \ tcp src_ip 192.168.1.12 action mirred egress redirect dev eth1 Before, I see unreadable skbs in the driver's TX path passed to dma mapping APIs. After, I don't see unreadable skbs in the driver's TX path passed to dma mapping APIs.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 65249feb6b3df9e17bab5911ee56fa7b0971e231 before 454825019d2f0c59e5174ece9e713f45ad80beff; affected 65249feb6b3df9e17bab5911ee56fa7b0971e231 before 1c17c8ced25c5fbe424c7ad7ea11d33014a986b1; affected 65249feb6b3df9e17bab5911ee56fa7b0971e231 before f3600c867c99a2cc8038680ecf211089c50e7971 |
| Linux / Linux | affected 6.12; unaffected 0 before 6.12; unaffected 6.12.20 through 6.12.*; unaffected 6.13.8 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.