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Vulnerability · Published Jan 23, 2026 · Assigned by Linux

CVE-2026-22992libceph: return the handler error from mon_handle_auth_done()

High 7.5

In plain English

A high-severity 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 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 60.8% 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: libceph: return the handler error from mon_handle_auth_done() Currently any error from ceph_auth_handle_reply_done() is propagated via finish_auth() but isn't returned from mon_handle_auth_done(). This results in higher layers learning that (despite the monitor considering us to be successfully authenticated) something went wrong in the authentication phase and reacting accordingly, but msgr2 still trying to proceed with establishing the session in the background. In the case of secure mode this can trigger a WARN in setup_crypto() and later lead to a NULL pointer dereference inside of prepare_auth_signature().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.162-1DEBIAN-CVE-2026-22992
Debian:13linux6.12.69-1DEBIAN-CVE-2026-22992
Debian:14linux6.18.8-1DEBIAN-CVE-2026-22992
Ubuntu:22.04:LTSlinux5.15.0-173.183UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux6.8.0-117.117UBUNTU-CVE-2026-22992
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-aws5.15.0-1103.110UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-aws6.8.0-1055.58UBUNTU-CVE-2026-22992
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1057.60~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-azure5.15.0-1109.118UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure6.8.0-1056.62UBUNTU-CVE-2026-22992
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1021.21~24.04.1UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1021.21~24.04.1USN-8604-1
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1059.65~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1109.118.1UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2026-22992
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-fde-6.176.17.0-1018.18~24.04.1USN-8605-1
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-gcp5.15.0-1103.112UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-gcp6.8.0-1058.61UBUNTU-CVE-2026-22992
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1021.24~24.04.1USN-8570-1
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1021.24~24.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1060.63~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-gke5.15.0-1099.105UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-gke6.8.0-1054.60UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1086.94UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1041.44UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-41.41~24.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-124.124~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-ibm5.15.0-1097.100UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-ibm6.8.0-1055.56UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1055.56~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1098.104UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-kvm5.15.0-1095.100UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-173.183UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-117.117.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-117.117.1~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1098.99UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1054.57UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1031.31USN-8669-1
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1031.31UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1054.57~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1054.57.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1055.55UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1024.24UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1044.44UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1030.30UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1030.30USN-8594-1
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-oracle5.15.0-1100.106UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55UBUNTU-CVE-2026-22992
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1019.19~24.04.3USN-8570-2
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1019.19~24.04.3UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1054.55~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-raspi5.15.0-1097.100UBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-raspi6.8.0-1056.60UBUNTU-CVE-2026-22992
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-22992
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-22992
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-117.117~22.04.1UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-22992
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1032.33UBUNTU-CVE-2026-22992
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1067.71UBUNTU-CVE-2026-22992

Affected products (as reported)

VendorProductVersions
Linux Linux cd1a677cad994021b19665ed476aea63f5d54f31 – before 77229551f2cf72f3e35636db68e6a825b912cf16cd1a677cad994021b19665ed476aea63f5d54f31 – before 33908769248b38a5e77cf9292817bb28e641992dcd1a677cad994021b19665ed476aea63f5d54f31 – before e097cd858196b1914309e7e3d79b4fa79383754dcd1a677cad994021b19665ed476aea63f5d54f31 – before d2c4a5f6996683f287f3851ef5412797042de7f1cd1a677cad994021b19665ed476aea63f5d54f31 – before 9e0101e57534ef0e7578dd09608a6106736b82e5cd1a677cad994021b19665ed476aea63f5d54f31 – before e84b48d31b5008932c0a0902982809fbaa1d3b70
Linux Linux 5.11

Weakness: CWE-754 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References