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Vulnerability · Published Feb 26, 2025 · Assigned by Linux

CVE-2022-49651srcu: Tighten cleanup_srcu_struct() GP checks

High 7.8

In plain English

A high-severity use-after-free 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 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 82.9% 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: srcu: Tighten cleanup_srcu_struct() GP checks Currently, cleanup_srcu_struct() checks for a grace period in progress, but it does not check for a grace period that has not yet started but which might start at any time. Such a situation could result in a use-after-free bug, so this commit adds a check for a grace period that is needed but not yet started to cleanup_srcu_struct().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.18.14-1DEBIAN-CVE-2022-49651
Debian:13linux5.18.14-1DEBIAN-CVE-2022-49651
Debian:14linux5.18.14-1DEBIAN-CVE-2022-49651
Ubuntu:22.04:LTSlinux5.15.0-202.212USN-8961-1
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-aws5.15.0-1119.126USN-8961-1
Ubuntu:22.04:LTSlinux-aws5.15.0-1119.126UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-azure5.15.0-1125.134UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-azure5.15.0-1125.134USN-8961-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1124.133USN-8962-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1124.133UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-gcp5.15.0-1120.130UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-gcp5.15.0-1120.130USN-8961-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-gke5.15.0-1115.121UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-gke5.15.0-1115.121USN-8961-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1102.110USN-8961-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1102.110UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-ibm5.15.0-1113.117UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-ibm5.15.0-1113.117USN-8961-1
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1114.120UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1114.120USN-8961-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1111.116USN-8961-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1111.116UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-197.207USN-8961-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-197.207UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1114.115USN-8961-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1114.115UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1070.72UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1070.72USN-8963-1
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1059.59UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1059.59USN-8963-1
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-oracle5.15.0-1116.122USN-8961-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1116.122UBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2022-49651
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49651
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2022-49651

Affected products (as reported)

VendorProductVersions
Linux Linux da915ad5cf25b5f5d358dd3670c3378d8ae8c03e – before e997dda6502eefbc1032d6b0da7b353c53344b07da915ad5cf25b5f5d358dd3670c3378d8ae8c03e – before 8ed00760203d8018bee042fbfe8e076579be2c2b
Linux Linux 4.12

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References