Vulnerability · Published Jan 23, 2026 · Assigned by Linux

CVE-2026-22984libceph: prevent potential out-of-bounds reads in handle_auth_done()

Critical 9.8

In plain English

A critical-severity out-of-bounds read 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 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.4%top 64.8% 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: prevent potential out-of-bounds reads in handle_auth_done() Perform an explicit bounds check on payload_len to avoid a possible out-of-bounds access in the callout. [ idryomov: changelog ]

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:10kernel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-debug6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-debug5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-debug-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-debug-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-debug-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-debug-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-debug-devel-matched6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-debug-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-debug-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-debug-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-debug-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-devel-matched6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-devel-matched5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-64k-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-64k-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-abi-stablelists6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-abi-stablelists4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-abi-stablelists5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-core4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-cross-headers6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-cross-headers4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-cross-headers5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-debug6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-debug4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-debug5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-debug-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-debug-core4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-debug-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-debug-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-debug-devel4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-debug-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-debug-devel-matched6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-debug-devel-matched5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-debug-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-debug-modules4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-debug-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-debug-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-debug-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-debug-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-debug-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-debug-uki-virt6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-debug-uki-virt5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-devel4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-devel-matched6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-devel-matched5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-doc6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-doc4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-doc5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-headers6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-headers4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-headers5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-modules4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-modules-extra4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-modules-extra-matched6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:10kernel-rt6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-debug6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-debug5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-debug-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-debug-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-debug-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-debug-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-debug-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-debug-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-debug-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-debug-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-debug-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-debug-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-64k-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-64k-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-core4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-debug6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-debug4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-debug5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-debug-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-debug-core4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-debug-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-debug-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-debug-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-debug-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-debug-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-debug-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-debug-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-devel4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-modules4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-rt-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-rt-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.132.1.rt7.473.el8_10ALSA-2026:25120
AlmaLinux:9kernel-rt-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-tools6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-tools4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-tools5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-tools-libs6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-tools-libs4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-tools-libs5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-tools-libs-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-tools-libs-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-uki-virt6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-uki-virt5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-uki-virt-addons6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-uki-virt-addons5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-zfcpdump6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-zfcpdump4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-zfcpdump5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-zfcpdump-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-zfcpdump-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-zfcpdump-devel6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-zfcpdump-devel5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-zfcpdump-devel-matched6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-zfcpdump-modules6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-zfcpdump-modules5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-zfcpdump-modules-core6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10kernel-zfcpdump-modules-extra6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10libperf6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9libperf5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10perf6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8perf4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9perf5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10python3-perf6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:8python3-perf4.18.0-553.132.1.el8_10ALSA-2026:25121
AlmaLinux:9python3-perf5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10rtla6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9rtla5.14.0-687.10.1.el9_8ALSA-2026:19568
AlmaLinux:10rv6.12.0-211.60.1.el10_2ALSA-2026:71602
AlmaLinux:9rv5.14.0-687.10.1.el9_8ALSA-2026:19568
Debian:12linux6.1.162-1DEBIAN-CVE-2026-22984
Debian:13linux6.12.69-1DEBIAN-CVE-2026-22984
Debian:14linux6.18.8-1DEBIAN-CVE-2026-22984
Rocky Linux:10kernel0:6.12.0-211.60.1.el10_2RLSA-2026:71602
Rocky Linux:8kernel0:4.18.0-553.132.1.el8_10.cloud.0.1RXSA-2026:25121
Rocky Linux:8kernel0:4.18.0-553.132.1.el8_10RLSA-2026:25121
Rocky Linux:9kernel0:5.14.0-687.10.1.el9_8.0.1RLSA-2026:19568
Rocky Linux:8kernel-rt0:4.18.0-553.132.1.rt7.473.el8_10RLSA-2026:25120
Ubuntu:22.04:LTSlinux5.15.0-173.183UBUNTU-CVE-2026-22984
Ubuntu:24.04:LTSlinux6.8.0-117.117UBUNTU-CVE-2026-22984
Ubuntu:24.04:LTSlinux6.8.0-117.117USN-8278-1
Ubuntu:25.10linux6.17.0-40.40USN-8490-1
Ubuntu:25.10linux6.17.0-40.40UBUNTU-CVE-2026-22984
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-22984
Ubuntu:22.04:LTSlinux-aws5.15.0-1103.110UBUNTU-CVE-2026-22984
Ubuntu:24.04:LTSlinux-aws6.8.0-1055.58UBUNTU-CVE-2026-22984

Affected products (as reported)

VendorProductVersions
Linux Linux cd1a677cad994021b19665ed476aea63f5d54f31 – before 194cfe2af4d2a1de599d39dad636b47c2f6c2c96cd1a677cad994021b19665ed476aea63f5d54f31 – before 79fe3511db416d2f2edcfd93569807cb02736e5ecd1a677cad994021b19665ed476aea63f5d54f31 – before ef208ea331ef688729f64089b895ed1b49e842e3cd1a677cad994021b19665ed476aea63f5d54f31 – before 2802ef3380fa8c4a08cda51ec1f085b1a712e9e2cd1a677cad994021b19665ed476aea63f5d54f31 – before 2d653bb63d598ae4b096dd678744bdcc34ee89e8cd1a677cad994021b19665ed476aea63f5d54f31 – before 818156caffbf55cb4d368f9c3cac64e458fb49c9
Linux Linux 5.11

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References