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Vulnerability · Published Mar 27, 2025 · Assigned by Linux

CVE-2022-49743ovl: Use "buf" flexible array for memcpy() destination

High 7.5

In plain English

A high-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 0.5% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 60.6% 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: ovl: Use "buf" flexible array for memcpy() destination The "buf" flexible array needs to be the memcpy() destination to avoid false positive run-time warning from the recent FORTIFY_SOURCE hardening: memcpy: detected field-spanning write (size 93) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.11-1DEBIAN-CVE-2022-49743
Debian:13linux6.1.11-1DEBIAN-CVE-2022-49743
Debian:14linux6.1.11-1DEBIAN-CVE-2022-49743
Ubuntu:22.04:LTSlinux5.15.0-72.79UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-aws5.15.0-1036.40UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-azure5.15.0-1038.45UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1038.45.1UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-gcp5.15.0-1034.42UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-gke5.15.0-1033.38UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1020.25UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-ibm5.15.0-1030.33UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1030.35UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-kvm5.15.0-1033.38UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-72.79UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1025.25UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-oracle5.15.0-1035.41UBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-raspi5.15.0-1029.31UBUNTU-CVE-2022-49743
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49743
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-49743
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-49743

Affected products (as reported)

VendorProductVersions
Linux Linux cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 – before 012cdef22000f3104e4fa8224ad29fde509b8cafcbe7fba8edfc8cb8e621599e376f8ac5c224fa72 – before a77141a06367825d639ac51b04703d551163e36ccbe7fba8edfc8cb8e621599e376f8ac5c224fa72 – before 07a96977b2f462337a9121302de64277b8747ab1cbe7fba8edfc8cb8e621599e376f8ac5c224fa72 – before cf8aa9bf97cadf85745506c6a3e244b22c268d63
Linux Linux 5.5

References