In the Linux kernel, the following vulnerability has been resolved:
x86/speculation: Fill RSB on vmexit for IBRS
Prevent RSB underflow/poisoning attacks with RSB. While at it, add a bunch of comments to attempt to document the current state of tribal knowledge about RSB attacks and what exactly is being mitigated.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perfUpgrade bpftool-debuginfoUpgrade kernel-livepatch-5.10.135-122.509Upgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade perfUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-livepatch-5.15.57-29.131Upgrade kernel-develUpgrade bpftoolUpgrade kernel-livepatch-4.14.291-218.527 | Mar 14, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernelUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade python3-perf | Nov 12, 2025 | Jun 30, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-toolsUpgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade bpftool | Jul 1, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-gcp-5.4Upgrade linux-gkeopUpgrade linux-aws-hweUpgrade linux-fipsUpgrade linux-gcp-fipsUpgrade linux-azure-fde-5.15Upgrade linux-aws-fipsUpgrade linux-hweUpgrade linuxUpgrade linux-lowlatencyUpgrade linux-ibm-5.4Upgrade linux-ibmUpgrade linux-azure-5.4Upgrade linux-kvmUpgrade linux-azure-4.15Upgrade linux-intel-iotgUpgrade linux-hwe-5.4Upgrade linux-azure-fipsUpgrade linux-gcp-4.15Upgrade linux-oracleUpgrade linux-oracle-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-azure-5.15Upgrade linux-aws-5.4Upgrade linux-gcpUpgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-iotUpgrade linux-lts-xenialUpgrade linux-awsUpgrade linux-oracle-5.4Upgrade linux-gkeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-gcp-5.15Upgrade linux-raspiUpgrade linux-riscv-5.15Upgrade linux-bluefieldUpgrade linux-realtimeUpgrade linux-aws-5.15Upgrade linux-raspi-5.4 | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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