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Vulnerability · Published Feb 26, 2025 · Assigned by Linux

CVE-2022-49455misc: ocxl: fix possible double free in ocxl_file_register_afu

High 7.8

In plain English

A high-severity double 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 20% 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 79.8% 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: misc: ocxl: fix possible double free in ocxl_file_register_afu info_release() will be called in device_unregister() when info->dev's reference count is 0. So there is no need to call ocxl_afu_put() and kfree() again. Fix this by adding free_minor() and return to err_unregister error path.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.18.5-1DEBIAN-CVE-2022-49455
Debian:13linux5.18.5-1DEBIAN-CVE-2022-49455
Debian:14linux5.18.5-1DEBIAN-CVE-2022-49455
Ubuntu:22.04:LTSlinux5.15.0-47.51UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-aws5.15.0-1019.23UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-azure5.15.0-1019.24UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-gcp5.15.0-1017.23UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-gke5.15.0-1015.18UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1002.4UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-ibm5.15.0-1013.15UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1015.20UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-kvm5.15.0-1017.21UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-47.53UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1007.7UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-oracle5.15.0-1017.22UBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-raspi5.15.0-1014.16UBUNTU-CVE-2022-49455
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49455
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49455

Affected products (as reported)

VendorProductVersions
Linux Linux 75ca758adbafc81804c39b2c200ecdc819a6c042 – before de65c32ace9aa70d51facc61ba986607075e3a2575ca758adbafc81804c39b2c200ecdc819a6c042 – before ee89d8dee55ab4b3b8ad8b70866b2841ba33476775ca758adbafc81804c39b2c200ecdc819a6c042 – before 8fb674216835e1f0c143762696d645facebb468575ca758adbafc81804c39b2c200ecdc819a6c042 – before 252768d32e92c1214aeebb5fec0844ca479bcf5c75ca758adbafc81804c39b2c200ecdc819a6c042 – before 9e9087cf34ee69f4e95d146ac29385d6e367a97b75ca758adbafc81804c39b2c200ecdc819a6c042 – before 950cf957fe34d40d63dfa3bf3968210430b6491e
Linux Linux 5.2

Weakness: CWE-415 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References