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Vulnerability · Published Feb 24, 2025 · Assigned by Linux

CVE-2023-52926io_uring/rw: split io_read() into a helper

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 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 84.7% 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: IORING_OP_READ did not correctly consume the provided buffer list when read i/o returned < 0 (except for -EAGAIN and -EIOCBQUEUED return). This can lead to a potential use-after-free when the completion via io_rw_done runs at separate context.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.123-1DEBIAN-CVE-2023-52926
Debian:13linux6.7.7-1DEBIAN-CVE-2023-52926
Debian:14linux6.7.7-1DEBIAN-CVE-2023-52926
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2023-52926
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-52926
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2023-52926

Affected products (as reported)

VendorProductVersions
Linux Linux 2b188cc1bb857a9d4701ae59aa7768b5124e262e – before 72060434a14caea20925e492310d6e680e3f90072b188cc1bb857a9d4701ae59aa7768b5124e262e – before 6c27fc6a783c8a77c756dd5461b15e465020d0752b188cc1bb857a9d4701ae59aa7768b5124e262e – before a08d195b586a217d76b42062f88f375a3eedda4d
Linux Linux 5.1

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

References