Log in Start free

Vulnerability · Published Feb 26, 2025 · Assigned by Linux

CVE-2022-49611x86/speculation: Fill RSB on vmexit for IBRS

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 79.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.18.14-1DEBIAN-CVE-2022-49611
Debian:13linux5.18.14-1DEBIAN-CVE-2022-49611
Debian:14linux5.18.14-1DEBIAN-CVE-2022-49611
Ubuntu:22.04:LTSlinux5.15.0-46.49UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-aws5.15.0-1017.21UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-azure5.15.0-1017.20UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-gcp5.15.0-1016.21UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-gke5.15.0-1014.17UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1002.4UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-ibm5.15.0-1012.14UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1013.17UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-kvm5.15.0-1016.19UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-46.49UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-oracle5.15.0-1016.20UBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-raspi5.15.0-1013.15UBUNTU-CVE-2022-49611
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49611
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49611

Affected products (as reported)

VendorProductVersions
Linux Linux b9cdaaf0a3becc52e8b4662fef28c452c4f009b4 – before 3d323b99ff5c8c57005184056d65f6af5b0479d8117cc7a908c83697b0b737d15ae1eb5943afe35b – before f744b88dfc201bf8092833ec70b23c720188b527117cc7a908c83697b0b737d15ae1eb5943afe35b – before 17a9fc4a7b91f8599223631bb6ae6416bc0de1c0117cc7a908c83697b0b737d15ae1eb5943afe35b – before 4d7f72b6e1bc630bec7e4cd51814bc2b092bf153117cc7a908c83697b0b737d15ae1eb5943afe35b – before 8d5cff499a6d740c91ff37963907e0e983c37f0f117cc7a908c83697b0b737d15ae1eb5943afe35b – before 8c38306e2e9257af4af2819aa287a4711ff36329117cc7a908c83697b0b737d15ae1eb5943afe35b – before 9756bba28470722dacb79ffce554336dd1f6a6cd68d1f7a3f1a35639a563bbad768d5df885b4ff05
Linux Linux 4.15

References