Cloudanix VulnDB

CVE-2025-39682

High · 7.1 CISA KEV

CVSS

7.1

EPSS

2.9%

Published

Sep 5, 2025

CISA due date

Sep 21, 2026

The record

In the Linux kernel, the following vulnerability has been resolved: tls: fix handling of zero-length records on the rx_list Each recvmsg() call must process either - only contiguous DATA records (any number of them) - one non-DATA record If the next record has different type than what has already been processed we break out of the main processing loop. If the record has already been decrypted (which may be the case for TLS 1.3 where we don't know type until decryption) we queue the pending record to the rx_list. Next recvmsg() will pick it up from there. Queuing the skb to rx_list after zero-copy decrypt is not possible, since in that case we decrypted directly to the user space buffer, and we don't have an skb to queue (darg.skb points to the ciphertext skb for access to metadata like length). Only data records are allowed zero-copy, and we break the processing loop after each non-data record. So we should never zero-copy and then find out that the record type has changed. The corner case we missed is when the initial record comes from rx_list, and it's zero length.

Affected packages

Ecosystem Package Introduced Fixed
AlmaLinux:10 kernel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-debug 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-debug-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-debug-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-debug-devel-matched 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-debug-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-debug-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-debug-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-devel-matched 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-64k-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-abi-stablelists 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-cross-headers 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-debug 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-debug-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-debug-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-debug-devel-matched 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-debug-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-debug-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-debug-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-debug-uki-virt 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-devel-matched 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-doc 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-headers 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-debug 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-debug-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-debug-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-debug-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-debug-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-debug-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-64k-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-debug 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-debug-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-debug-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-debug-kvm 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-debug-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-debug-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-debug-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-kvm 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-rt-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-tools 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-tools-libs 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-tools-libs-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-uki-virt 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-uki-virt-addons 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-zfcpdump 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-zfcpdump-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-zfcpdump-devel 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-zfcpdump-devel-matched 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-zfcpdump-modules 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-zfcpdump-modules-core 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 kernel-zfcpdump-modules-extra 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 libperf 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 perf 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 python3-perf 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 rtla 0 6.12.0-55.37.1.el10_0
AlmaLinux:10 rv 0 6.12.0-55.37.1.el10_0
AlmaLinux:9 kernel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-debug 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-debug-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-debug-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-debug-devel-matched 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-debug-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-debug-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-debug-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-devel-matched 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-64k-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-abi-stablelists 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-cross-headers 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-debug 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-debug-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-debug-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-debug-devel-matched 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-debug-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-debug-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-debug-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-debug-uki-virt 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-devel-matched 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-doc 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-headers 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-debug 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-debug-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-debug-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-debug-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-debug-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-debug-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-64k-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-debug 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-debug-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-debug-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-debug-kvm 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-debug-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-debug-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-debug-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-kvm 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-rt-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-tools 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-tools-libs 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-tools-libs-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-uki-virt 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-uki-virt-addons 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-zfcpdump 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-zfcpdump-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-zfcpdump-devel 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-zfcpdump-devel-matched 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-zfcpdump-modules 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-zfcpdump-modules-core 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 kernel-zfcpdump-modules-extra 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 libperf 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 perf 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 python3-perf 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 rtla 0 5.14.0-570.49.1.el9_6
AlmaLinux:9 rv 0 5.14.0-570.49.1.el9_6
Debian:12 linux 0 No fix
Debian:13 linux 0 No fix
Debian:14 linux 0 No fix
Debian:14 linux 0 6.16.5-1
Linux Kernel 6.0.0 6.1.149
Mageia:9 kernel 0 6.6.105-1.mga9
Mageia:9 kernel-linus 0 6.6.105-1.mga9
Mageia:9 kmod-virtualbox 0 7.1.10-10.mga9
Mageia:9 kmod-xtables-addons 0 3.24-86.mga9
Mageia:9 mageia-repos 0 9-4.mga9
Mageia:9 meta-task 0 9-4.mga9
SUSE:Linux Enterprise High Availability Extension 15 SP6 kernel-default 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Live Patching 15 SP6 kernel-default 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_16 0 1-150600.1.3.1
SUSE:Linux Enterprise Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_14 0 5-150600.2.1
SUSE:Linux Enterprise Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_16 0 1-150600.13.3.1
SUSE:Linux Enterprise Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_1 0 9-150700.2.1
SUSE:Linux Enterprise Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_5 0 1-150700.1.3.1
SUSE:Linux Enterprise Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_3 0 5-150700.2.1
SUSE:Linux Enterprise Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_4 0 5-150700.2.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-64kb 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-default 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-default-base 0 6.4.0-150600.23.73.1.150600.12.32.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-source 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6 kernel-zfcpdump 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Development Tools 15 SP6 kernel-docs 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Development Tools 15 SP6 kernel-obs-build 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Development Tools 15 SP6 kernel-source 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Development Tools 15 SP6 kernel-syms 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Legacy 15 SP6 kernel-default 0 6.4.0-150600.23.73.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP6 kernel-azure 0 6.4.0-150600.8.52.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP6 kernel-source-azure 0 6.4.0-150600.8.52.1
SUSE:Linux Enterprise Module for Public Cloud 15 SP6 kernel-syms-azure 0 6.4.0-150600.8.52.1
SUSE:Linux Enterprise Workstation Extension 15 SP6 kernel-default 0 6.4.0-150600.23.73.1
SUSE:Real Time Module 15 SP6 kernel-rt 0 6.4.0-150600.10.55.1
SUSE:Real Time Module 15 SP6 kernel-rt_debug 0 6.4.0-150600.10.55.1
SUSE:Real Time Module 15 SP6 kernel-source-rt 0 6.4.0-150600.10.55.1
SUSE:Real Time Module 15 SP6 kernel-syms-rt 0 6.4.0-150600.10.55.1
SUSE:Real Time Module 15 SP7 kernel-rt 0 6.4.0-150700.7.19.1
SUSE:Real Time Module 15 SP7 kernel-source-rt 0 6.4.0-150700.7.19.1
SUSE:Real Time Module 15 SP7 kernel-syms-rt 0 6.4.0-150700.7.19.1
openSUSE:Leap 15.6 dtb-aarch64 0 6.4.0-150600.23.73.1
openSUSE:Leap 15.6 kernel-64kb 0 6.4.0-150600.23.73.1
openSUSE:Leap 15.6 kernel-azure 0 6.4.0-150600.8.52.1
openSUSE:Leap 15.6 kernel-debug 0 6.4.0-150600.23.73.1
openSUSE:Leap 15.6 kernel-default 0 6.4.0-150600.23.73.1
openSUSE:Leap 15.6 kernel-default-base 0 6.4.0-150600.23.73.1.150600.12.32.1
openSUSE:Leap 15.6 kernel-docs 0 6.4.0-150600.23.73.1

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