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Vulnerability · Published Sep 18, 2025 · Assigned by Linux

CVE-2023-53373crypto: seqiv - Handle EBUSY correctly

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 6% 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 94.2% 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: crypto: seqiv - Handle EBUSY correctly As it is seqiv only handles the special return value of EINPROGERSS, which means that in all other cases it will free data related to the request. However, as the caller of seqiv may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:8kernel4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-debug5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-debug-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-debug-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-debug-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-devel-matched5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-64k-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-abi-stablelists4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-abi-stablelists5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-core4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-cross-headers4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-cross-headers5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-debug4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-debug5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-debug-core4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-debug-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-debug-devel4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-debug-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-debug-devel-matched5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-debug-modules4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-debug-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-debug-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-debug-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-debug-uki-virt5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-devel4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-devel-matched5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-doc4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-doc5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-headers4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-headers5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-modules4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-modules-extra4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-debug5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-debug-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-debug-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-debug-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-debug-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-debug-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-64k-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-core4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-debug4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-debug5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-debug-core4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-debug-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-debug-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-debug-kvm5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-debug-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-devel4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-kvm5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-modules4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-rt-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.80.1.rt7.421.el8_10ALSA-2025:18298
AlmaLinux:9kernel-rt-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-tools4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-tools5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-tools-libs4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-tools-libs5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-tools-libs-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-uki-virt5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-uki-virt-addons5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-zfcpdump4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-zfcpdump5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-zfcpdump-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-zfcpdump-devel5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-zfcpdump-modules5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9libperf5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8perf4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9perf5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:8python3-perf4.18.0-553.80.1.el8_10ALSA-2025:18297
AlmaLinux:9python3-perf5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9rtla5.14.0-570.52.1.el9_6ALSA-2025:17760
AlmaLinux:9rv5.14.0-570.52.1.el9_6ALSA-2025:17760
Debian:12linux6.1.20-1DEBIAN-CVE-2023-53373
Debian:13linux6.1.20-1DEBIAN-CVE-2023-53373
Debian:14linux6.1.20-1DEBIAN-CVE-2023-53373
Rocky Linux:8kernel0:4.18.0-553.80.1.el8_10RLSA-2025:18297
Rocky Linux:9kernel0:5.14.0-570.52.1.el9_6RLSA-2025:17760
Rocky Linux:8kernel-rt0:4.18.0-553.80.1.rt7.421.el8_10RLSA-2025:18298
Ubuntu:22.04:LTSlinux5.15.0-75.82UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-aws5.15.0-1038.43UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-azure5.15.0-1040.47UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1041.48.1UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-gcp5.15.0-1036.44UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-gke5.15.0-1036.41UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1022.27UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-ibm5.15.0-1032.35UBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1033.38UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-kvm5.15.0-1035.40UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-75.82UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1027.27UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1015.15UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-oracle5.15.0-1037.43UBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-raspi5.15.0-1032.35UBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53373
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-53373
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-53373

Affected products (as reported)

VendorProductVersions
Linux Linux 0a270321dbf948963aeb0e8382fe17d2c2eb3771 – before cc4d0d4251748a8a68026938f4055d2ac47c57190a270321dbf948963aeb0e8382fe17d2c2eb3771 – before 1effbddaff60eeef8017c6dea1ee0ed970164d140a270321dbf948963aeb0e8382fe17d2c2eb3771 – before 63551e4b7cbcd9914258827699eb2cb6ed6e4a160a270321dbf948963aeb0e8382fe17d2c2eb3771 – before ae849d2f48019ff9c104e32bf588ccbfb200e9710a270321dbf948963aeb0e8382fe17d2c2eb3771 – before 36ec108b7bd7e280edb22de028467bd09d6446200a270321dbf948963aeb0e8382fe17d2c2eb3771 – before 4d497e8b200a175094e0ac252ed878add39b87710a270321dbf948963aeb0e8382fe17d2c2eb3771 – before 9477db935eb690f697d9bcc4f608927841bc8b360a270321dbf948963aeb0e8382fe17d2c2eb3771 – before 32e62025e5e52fbe4812ef044759de7010b15dbc
Linux Linux 2.6.25

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

References