Linux vulnerability

What happened

In the Linux kernel, the following vulnerability has been resolved: net: sxgbe: fix potential NULL dereference in sxgbe_rx() Currently, when skb is null, the driver prints an error and then dereferences skb on the next line. To fix this, let's add a 'break' after the error message to switch to sxgbe_rx_refill(), which is similar to the approach taken by the other drivers in this particular case, e.g. calxeda with xgmac_rx(). Found during a code review.

Affected versions

Linux: 1edb9ca69e8a7988900fc0283e10550b5592164d through before ac171c3c755499c9f87fe30b920602255f8b5648 (git); 1edb9ca69e8a7988900fc0283e10550b5592164d through before 18ef3ad1bb57dcf1a9ee61736039aedccf670b21 (git); 1edb9ca69e8a7988900fc0283e10550b5592164d through before 46e5332126596a2ca791140feab18ce1fc1a3c86 (git); 1edb9ca69e8a7988900fc0283e10550b5592164d through before 7fd789d6ea4915034eb6bcb72f6883c8151083e5 (git); 1edb9ca69e8a7988900fc0283e10550b5592164d through before 45b5b4ddb8d6bea5fc1625ff6f163bbb125d49cc (git); 1edb9ca69e8a7988900fc0283e10550b5592164d through before 88f46c0be77bfe45830ac33102c75be7c34ac3f3 (git); 1edb9ca69e8a7988900fc0283e10550b5592164d through before f5bce28f6b9125502abec4a67d68eabcd24b3b17 (git); 3.15 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.