PT-2025-49611 · Git+3 · Kernel+90

Published 2025-12-08 · Updated 2025-12-22 · CVE-2022-50631

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a memory leak in the kexec functionality related to the fdt (Flattened Device Tree) buffer. The issue was identified by the kmemleak detector, indicating an unreferenced object in memory when a kexec kernel is reloaded or unloaded. Specifically, a buffer allocated via kvmalloc() to store the fdt is not freed, leading to a memory leak. The fix involves introducing the arch kimage file post load cleanup() function, specific to the RISC-V architecture, to free the allocated buffer. The vulnerable code is located within the elf kexec load() function.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2022-50631

Affected Products

Kernel

Linux

Linux-Allwinner-5.19

Linux-Aws

Linux-Aws-5.0

Linux-Aws-5.11

Linux-Aws-5.13

Linux-Aws-5.19

Linux-Aws-5.3

Linux-Aws-5.8

Linux-Aws-6.2

Linux-Aws-6.5

Linux-Aws-Fips

Linux-Azure

Linux-Azure-5.11

Linux-Azure-5.13

Linux-Azure-5.19

Linux-Azure-5.3

Linux-Azure-5.8

Linux-Azure-6.11

Linux-Azure-6.2

Linux-Azure-6.5

Linux-Azure-Edge

Linux-Azure-Fde

Linux-Azure-Fde-5.19

Linux-Azure-Fde-6.2

Linux-Fips

Linux-Gcp

Linux-Gcp-5.11

Linux-Gcp-5.13

Linux-Gcp-5.19

Linux-Gcp-5.3

Linux-Gcp-5.8

Linux-Gcp-6.11

Linux-Gcp-6.2

Linux-Gcp-6.5

Linux-Gke

Linux-Gke-4.15

Linux-Gkeop-5.15

Linux-Gke-5.4

Linux-Gkeop

Linux-Hwe

Linux-Hwe-5.11

Linux-Hwe-5.13

Linux-Hwe-5.19

Linux-Hwe-5.8

Linux-Hwe-6.11

Linux-Hwe-6.2

Linux-Hwe-6.5

Linux-Hwe-Edge

Linux-Intel-5.13

Linux-Intel-Iot-Realtime

Linux-Lowlatency-Hwe-5.19

Linux-Lowlatency-Hwe-6.11

Linux-Lowlatency-Hwe-6.2

Linux-Lowlatency-Hwe-6.5

Linux-Nvidia-6.11

Linux-Nvidia-6.2

Linux-Nvidia-6.5

Linux-Oem

Linux-Oem-5.10

Linux-Oem-5.13

Linux-Oem-5.14

Linux-Oem-5.17

Linux-Oem-5.6

Linux-Oem-6.0

Linux-Oem-6.1

Linux-Oem-6.11

Linux-Oem-6.5

Linux-Oem-6.8

Linux-Oracle

Linux-Oracle-5.0

Linux-Oracle-5.11

Linux-Oracle-5.13

Linux-Oracle-5.3

Linux-Oracle-5.8

Linux-Oracle-6.5

Linux-Raspi

Linux-Raspi-Realtime

Linux-Raspi2

Linux-Realtime

Linux-Riscv

Linux-Riscv-5.11

Linux-Riscv-5.19

Linux-Riscv-5.8

Linux-Riscv-6.14

Linux-Riscv-6.5

Linux-Starfive-5.19

Linux-Starfive-6.2

Linux-Starfive-6.5

Linux-Xilinx

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50631.json · Exploit
• https://cve.org/CVERecord?id=CVE-2022-50631 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50631 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50631 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50631 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50631 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50631 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50631 · Vendor Advisory
• https://git.kernel.org/stable/c/96df59b1ae23f5c11698c3c2159aeb2ecd4944a4 · Note
• https://git.kernel.org/linus/96df59b1ae23f5c11698c3c2159aeb2ecd4944a4 · Note
• https://git.kernel.org/stable/c/c66ad198b6497dee8f45d7ed5c03629c4525c7d0 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://git.kernel.org/stable/c/dc387c34d8dd10b02a333df098f8fd9bba177a45 · Note
• https://twitter.com/CVEnew/status/2003233999381282912 · Twitter Post