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Vulnerability · Published Dec 30, 2025 · Assigned by Linux

CVE-2022-50856cifs: Fix xid leak in cifs_ses_add_channel()

Unrated

In plain English

A security flaw 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 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 90.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix xid leak in cifs_ses_add_channel() Before return, should free the xid, otherwise, the xid will be leaked.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-abi-stablelists4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-core4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-cross-headers4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-debug4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-debug-core4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-debug-devel4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-debug-modules4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-devel4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-doc4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-headers4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-modules4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-modules-extra4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-tools4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-tools-libs4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-zfcpdump4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8perf4.18.0-553.82.1.el8_10ALSA-2025:19447
AlmaLinux:8python3-perf4.18.0-553.82.1.el8_10ALSA-2025:19447
Debian:12linux6.0.6-1DEBIAN-CVE-2022-50856
Debian:13linux6.0.6-1DEBIAN-CVE-2022-50856
Debian:14linux6.0.6-1DEBIAN-CVE-2022-50856
Ubuntu:22.04:LTSlinux5.15.0-60.66UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-aws5.15.0-1030.34UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-azure5.15.0-1033.40UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1033.40.1UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-gcp5.15.0-1029.36UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-gke5.15.0-1027.32UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1015.19UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-ibm5.15.0-1025.28UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1025.30UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-kvm5.15.0-1028.33UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-60.66UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1017.17UBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-oracle5.15.0-1029.35UBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-raspi5.15.0-1024.26UBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-50856
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-50856

Affected products (as reported)

VendorProductVersions
Linux Linux d70e9fa55884760b6d6c293dbf20d8c52ce11fb7 – before 7286f875510486fdc2fc426b7c826262e2283a65d70e9fa55884760b6d6c293dbf20d8c52ce11fb7 – before 847301f0ee1c29f34cc48547ce1071990f24969cd70e9fa55884760b6d6c293dbf20d8c52ce11fb7 – before db2a8b6c17e128d91f35d836c569f4a6bda4471bd70e9fa55884760b6d6c293dbf20d8c52ce11fb7 – before e909d054bdea75ef1ec48c18c5936affdaecbb2c
Linux Linux 5.5

References