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Vulnerability · Published Apr 28, 2023 · Assigned by mitre

CVE-2023-31436

High 7.8

In plain English

A high-severity out-of-bounds write in the bpftool package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.6%top 51.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-abi-stablelists4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-core4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-cross-headers4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-debug4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-debug-core4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-debug-devel4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-debug-modules4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-debug-modules-extra4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-devel4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-doc4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-headers4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-modules4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-modules-extra4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-tools4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-tools-libs4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-tools-libs-devel4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-zfcpdump4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-zfcpdump-core4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-zfcpdump-devel4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-zfcpdump-modules4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8perf4.18.0-513.5.1.el8_9ALSA-2023:7077
AlmaLinux:8python3-perf4.18.0-513.5.1.el8_9ALSA-2023:7077
Debian:12linux6.1.27-1DEBIAN-CVE-2023-31436
Debian:13linux6.1.27-1DEBIAN-CVE-2023-31436
Debian:14linux6.1.27-1DEBIAN-CVE-2023-31436
Ubuntu:22.04:LTSlinux5.15.0-73.80UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux5.15.0-73.80USN-6127-1
Ubuntu:22.04:LTSlinux-allwinner-5.195.19.0-1013.13~22.04.1UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-aws5.15.0-1037.41USN-6127-1
Ubuntu:22.04:LTSlinux-aws5.15.0-1037.41UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-azure5.15.0-1039.46USN-6127-1
Ubuntu:22.04:LTSlinux-azure5.15.0-1039.46UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1039.46.1UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1039.46.1USN-6135-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1035.43USN-6127-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1035.43UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-gcp-5.195.19.0-1025.27~22.04.1UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-gke5.15.0-1034.39UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-gke5.15.0-1034.39USN-6127-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1021.26USN-6127-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1021.26UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-hwe-5.195.19.0-43.44~22.04.1UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-hwe-5.195.19.0-43.44~22.04.1USN-6127-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1031.34UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-ibm5.15.0-1031.34USN-6127-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1031.36UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1031.36USN-6150-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1034.39USN-6127-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1034.39UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-73.80USN-6127-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-73.80UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.195.19.0-1025.26~22.04.1UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1026.26UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1014.14UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-oem-6.06.0.0-1021.21USN-6385-1
Ubuntu:22.04:LTSlinux-oem-6.06.0.0-1021.21UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1014.14UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1014.14USN-6173-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1036.42USN-6127-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1036.42UBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-raspi5.15.0-1030.32USN-6150-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1030.32UBUNTU-CVE-2023-31436
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-31436
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-31436

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References