Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale 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 |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade bpftoolUpgrade python-perf-debuginfoUpgrade kernel-headersUpgrade python-perfUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-tools-develUpgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade perfUpgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64 | Jul 4, 2022 | Jun 29, 2021 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Jun 29, 2021 |
| Gentoo Linux | — | Upgrade app-emulation/xen. | Jul 13, 2021 | Jun 29, 2021 |
| Ubuntu | — | Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-lowlatencyUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-5.8.0-1038-oracleUpgrade linux-image-5.11.0-27-generic-lpaeUpgrade linux-image-5.11.0-1017-gcpUpgrade linux-image-5.11.0-1016-oracleUpgrade linux-image-5.11.0-1016-raspi-nolpaeUpgrade linux-image-gcpUpgrade linux-image-generic-64kUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-oem-20.04bUpgrade linux-image-gkeUpgrade linux-image-virtualUpgrade linux-image-genericUpgrade linux-image-azureUpgrade linux-image-5.8.0-1040-azureUpgrade linux-image-5.10.0-1038-oemUpgrade linux-image-5.8.0-1039-gcpUpgrade linux-image-oem-20.04Upgrade linux-image-5.11.0-31-genericUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-5.11.0-1016-raspiUpgrade linux-image-raspiUpgrade linux-image-5.11.0-31-generic-lpaeUpgrade linux-image-kvmUpgrade linux-image-oracleUpgrade linux-image-5.11.0-27-genericUpgrade linux-image-5.11.0-31-lowlatencyUpgrade linux-image-5.11.0-27-generic-64kUpgrade linux-image-5.11.0-27-lowlatencyUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-5.11.0-1016-awsUpgrade linux-image-5.8.0-1042-awsUpgrade linux-image-awsUpgrade linux-image-generic-lpaeUpgrade linux-image-5.11.0-31-generic-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-5.11.0-1013-azureUpgrade linux-image-5.11.0-1014-kvm | Jul 21, 2021 | Jun 29, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jun 29, 2021 |
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