CVE-2026-45998
published 2026-05-27CVE-2026-45998: In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix potential UAF after skb_unshare() failure If skb_unshare() fails to unshare a…
high8.8
In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix potential UAF after skb_unshare() failure
If skb_unshare() fails to unshare a packet due to allocation failure in
rxrpc_input_packet(), the skb pointer in the parent (rxrpc_io_thread())
will be NULL'd out. This will likely cause the call to
trace_rxrpc_rx_done() to oops.
Fix this by moving the unsharing down to where rxrpc_input_call_event()
calls rxrpc_input_call_packet(). There are a number of places prior to
that where we ignore DATA packets for a variety of reasons (such as the
call already being complete) for which an unshare is then avoided.
And with that, rxrpc_input_packet() doesn't need to take a pointer to the
pointer to the packet, so change that to just a pointer.
Affected
39 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 2d1faf7a0ca3c0b327cf064c80e4e775532c9319 < e3bf143b1e98fb3d6d9e6825bcd683974d478e8c | e3bf143b1e98fb3d6d9e6825bcd683974d478e8c |
| linux | linux | >= 2d1faf7a0ca3c0b327cf064c80e4e775532c9319 < bf20f46d94f1db38e6ffc0ca204a5fe0de01b495 | bf20f46d94f1db38e6ffc0ca204a5fe0de01b495 |
| linux | linux | >= 2d1faf7a0ca3c0b327cf064c80e4e775532c9319 < 996b0487b3cdda4c91811dbb1c9564626bc840bd | 996b0487b3cdda4c91811dbb1c9564626bc840bd |
| linux | linux | >= 2d1faf7a0ca3c0b327cf064c80e4e775532c9319 < 8fde6296c4d4da2be7ab761305ab7f232b94eefd | 8fde6296c4d4da2be7ab761305ab7f232b94eefd |
| linux | linux | >= 2d1faf7a0ca3c0b327cf064c80e4e775532c9319 < 1f2740150f904bfa60e4bad74d65add3ccb5e7f8 | 1f2740150f904bfa60e4bad74d65add3ccb5e7f8 |
| linux | linux_kernel | — | — |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
| ubuntu | linux-aws-6.17 | — | — |
| ubuntu | linux-aws-6.8 | — | — |
| ubuntu | linux-aws-fips | — | — |
| ubuntu | linux-azure | — | — |
| ubuntu | linux-azure-6.17 | — | — |
| ubuntu | linux-fips | — | — |
| ubuntu | linux-gcp | — | — |
| ubuntu | linux-gcp-6.17 | — | — |
| ubuntu | linux-gcp-6.8 | — | — |
| ubuntu | linux-gcp-fips | — | — |
| ubuntu | linux-gke | — | — |
| ubuntu | linux-gkeop | — | — |
| ubuntu | linux-hwe-6.17 | — | — |
| ubuntu | linux-hwe-6.8 | — | — |
| ubuntu | linux-ibm | — | — |
| ubuntu | linux-ibm-6.8 | — | — |