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.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | Upgrade kernel-rtUpgrade kernelNo solution exists | Jul 6, 2026 | May 27, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1060-gcp-fipsUpgrade linux-image-fipsUpgrade linux-image-6.17.0-1018-gcpUpgrade linux-image-6.8.0-1055-gke-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-6.8.0-1057-raspiUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.8.0-1059-azureUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-lowlatency-6.8Upgrade linux-image-generic-lpaeUpgrade linux-image-lowlatency-64kUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-generic-6.17Upgrade linux-image-gkeUpgrade linux-image-7.0.0-1007-azureUpgrade linux-image-oem-22.04Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-genericUpgrade linux-image-6.17.0-1016-oracle-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-oem-22.04aUpgrade linux-image-oem-26.04aUpgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-generic-64kUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-azure-6.8Upgrade linux-image-7.0.0-1009-nvidia-64kUpgrade linux-image-aws-6.17Upgrade linux-image-azure-6.17Upgrade linux-image-6.8.0-1032-xilinxUpgrade linux-image-6.8.0-1054-oracleUpgrade linux-image-6.8.0-124-generic-64kUpgrade linux-image-7.0.0-1006-awsUpgrade linux-image-6.8.0-1059-azure-fipsUpgrade linux-image-7.0.0-1011-raspi-realtimeUpgrade linux-image-realtime-6.8.1Upgrade linux-image-virtualUpgrade linux-image-6.8.0-1055-nvidiaUpgrade linux-image-7.0.0-1009-nvidiaUpgrade linux-image-6.8.0-1055-nvidia-64kUpgrade linux-image-7.0.0-28-generic-64kUpgrade linux-image-6.8.0-1055-nvidia-lowlatencyUpgrade linux-image-raspi-6.8Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-realtime-7.0Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-6.8.0-134-lowlatency-64kUpgrade linux-image-gke-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-aws-64kUpgrade linux-image-gcp-64kUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-1057-awsUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-6.17.0-1016-oracleUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.8.0-1060-gcp-64kUpgrade linux-image-generic-64k-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-6.8.0-1057-aws-fipsUpgrade linux-image-oem-24.04Upgrade linux-image-6.17.0-35-generic-64kUpgrade linux-image-nvidia-64k-hwe-24.04Upgrade linux-image-ibm-7.0Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.17.0-1014-realtimeUpgrade linux-image-nvidia-hwe-24.04Upgrade linux-image-nvidia-6.8Upgrade linux-image-gcp-64k-6.17Upgrade linux-image-6.8.0-1026-nvidia-tegraUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-aws-6.8Upgrade linux-image-gkeopUpgrade linux-image-6.8.0-1060-gcpUpgrade linux-image-7.0.0-1011-raspiUpgrade linux-image-7.0.0-1006-aws-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-22-genericUpgrade linux-image-oem-22.04dUpgrade linux-image-virtual-6.17Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-virtual-7.0Upgrade linux-image-6.8.0-1026-nvidia-tegra-rtUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-nvidiaUpgrade linux-image-6.17.0-1017-aws-64kUpgrade linux-image-gcp-7.0Upgrade linux-image-nvidia-6.17Upgrade linux-image-7.0.0-22-realtimeUpgrade linux-image-aws-fipsUpgrade linux-image-6.8.1-1052-realtimeUpgrade linux-image-aws-64k-6.17Upgrade linux-image-6.8.0-1057-ibmUpgrade linux-image-generic-64k-6.17Upgrade linux-image-gcpUpgrade linux-image-fips-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-azureUpgrade linux-image-aws-lts-24.04Upgrade linux-image-6.17.0-1021-nvidia-64kUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-oracle-6.17Upgrade linux-image-oem-24.04aUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-64k-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-7.0.0-1005-oracle-64kUpgrade linux-image-6.8.0-134-lowlatencyUpgrade linux-image-6.8.0-1057-aws-64kUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-realtime-64kUpgrade linux-image-realtime-6.17Upgrade linux-image-raspi-realtimeUpgrade linux-image-oracle-7.0Upgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-1005-oracleUpgrade linux-image-virtual-6.8Upgrade linux-image-realtimeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.17.0-1017-awsUpgrade linux-image-generic-7.0Upgrade linux-image-azure-fipsUpgrade linux-image-7.0.0-22-generic-64kUpgrade linux-image-6.8.0-124-fipsUpgrade linux-image-7.0.0-1005-gcpUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-xilinxUpgrade linux-image-7.0.0-1007-ibmUpgrade linux-image-raspi-6.17Upgrade linux-image-gke-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-6.8Upgrade linux-image-awsUpgrade linux-image-7.0.0-1008-oemUpgrade linux-image-6.8.0-124-genericUpgrade linux-image-6.8.0-1042-gkeopUpgrade linux-image-6.17.0-35-genericUpgrade linux-image-6.17.0-1021-nvidiaUpgrade linux-image-6.17.0-1018-gcp-64kUpgrade linux-image-xilinx-6.8Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-oem-6.17Upgrade linux-image-oem-24.04dUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-ibm-6.8Upgrade linux-image-gke-64k-6.8Upgrade linux-image-gcp-6.17Upgrade linux-image-oem-22.04bUpgrade linux-image-raspiUpgrade linux-image-oem-24.04cUpgrade linux-image-azure-7.0Upgrade linux-image-6.17.0-1018-raspiUpgrade linux-image-7.0.0-1005-gcp-64kUpgrade linux-image-6.8.0-1055-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1054-oracle-64kUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-gcp-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-ibmUpgrade linux-image-oem-7.0Upgrade linux-image-gcp-fipsUpgrade linux-image-aws-64k-6.8Upgrade linux-image-7.0.0-22-realtime-64kUpgrade linux-image-6.8.0-2046-raspi-realtimeUpgrade linux-image-6.17.0-1024-oemUpgrade linux-image-6.17.0-1017-azureUpgrade linux-image-oracle-64k-6.17Upgrade linux-image-oracle-64kUpgrade linux-image-oracleUpgrade linux-image-6.8.0-1055-gkeUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-7.0.0-28-genericUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-oem-26.04Upgrade linux-image-nvidia-64k-6.17Upgrade linux-image-kvmUpgrade linux-image-gkeop-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-1058-azureUpgrade linux-image-raspi-7.0Upgrade linux-image-nvidia-7.0Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-ibm-classic | Jun 2, 2026 | Jun 2, 2026 |
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