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Unscored CVE-2022-50859 EUVD-2022-55839GHSA-4fwr-9cpg-j96h

cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message

Published Dec 30, 2025 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.14 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message

Commit d5c7076b772a ("smb3: add smb3.1.1 to default dialect list")
extend the dialects from 3 to 4, but forget to decrease the extended
length when specific the dialect, then the message length is larger
than expected.

This maybe leak some info through network because not initialize the
message body.

After apply this patch, the VALIDATE_NEGOTIATE_INFO message length is
reduced from 28 bytes to 26 bytes.

Affected products

VendorProductAffectedFixed
Linux Linux 5.0 5.4.220

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 6.0.3-1 —
Debian 13 linux 6.0.3-1 —
Debian 12 linux 6.0.3-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1014.16 —
Ubuntu 24.04 LTS linux-riscv +10 No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-60.66 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1030.34 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1033.40 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1033.40.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1029.36 —
Ubuntu 22.04 LTS linux-gke 5.15.0-1027.32 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1015.19 —
Ubuntu 22.04 LTS linux-ibm 5.15.0-1025.28 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1025.30 —
Ubuntu 22.04 LTS linux-kvm 5.15.0-1028.33 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1017.17 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1029.35 —
Ubuntu 22.04 LTS linux-raspi 5.15.0-1024.26 —
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-139.156 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1096.104 —
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1030.34~20.04.1 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1103.109 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1033.40~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1058.64 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1100.109 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1029.36~20.04.1 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-60.66~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1044.49 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1025.30~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1012.14 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1086.92 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1093.102 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1029.35~20.04.1 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1080.91 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1029.33~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1021.25 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1096.104~18.04.1 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1103.109~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1100.109~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-139.156~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1044.49~18.04.1 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1093.102~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1080.91~18.04.1 —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1096.104+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1103.109+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1072.81 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1100.109+fips1 —

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.133.1 SUSE-SU-2026:0317-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.133.1.150500.6.65.1 SUSE-SU-2026:0317-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.194.1 SUSE-SU-2026:0617-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.194.1.150400.24.98.3 SUSE-SU-2026:0617-1
SLES 12 SP5 kernel-syms +2 4.12.14-122.290.1 SUSE-SU-2026:0316-1
Show 10 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.133.1.150500.6.65.1 SUSE-SU-2026:0317-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.133.1 SUSE-SU-2026:0317-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.194.1.150400.24.98.3 SUSE-SU-2026:0617-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.194.1 SUSE-SU-2026:0617-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.133.1.150500.6.65.1 SUSE-SU-2026:0317-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.118.1 SUSE-SU-2026:0263-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.133.1 SUSE-SU-2026:0317-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.194.1 SUSE-SU-2026:0617-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.194.1.150400.24.98.3 SUSE-SU-2026:0617-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.142.1 SUSE-SU-2026:0411-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.194.1 SUSE-SU-2026:0617-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.194.1.150400.24.98.3 SUSE-SU-2026:0617-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.142.1 SUSE-SU-2026:0411-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.133.1 SUSE-SU-2026:0317-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_34 1-150500.11.3.1 SUSE-SU-2026:0317-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.194.1 SUSE-SU-2026:0617-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_48 1-150400.9.7.1 SUSE-SU-2026:0617-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.290.1 SUSE-SU-2026:0316-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_76 1-8.7.1 SUSE-SU-2026:0316-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.133.1 SUSE-SU-2026:0317-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.133.1.150500.6.65.1 SUSE-SU-2026:0317-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.194.1 SUSE-SU-2026:0617-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.194.1.150400.24.98.3 SUSE-SU-2026:0617-1

Advisories 6

References