PT-2025-49628 · Git+3 · Kernel+90

Published 2025-12-09 · Updated 2025-12-22 · CVE-2022-50648

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.0.0-rc6+ #33

Description The Linux kernel contains a flaw in the ftrace subsystem related to recursive locking of the direct mutex within the ftrace modify direct caller function. This can lead to a deadlock situation when register ftrace function is called while the direct mutex is already held. The issue was identified through testing with the ftrace-direct-modify.ko sample and reported by Naveen. The ftrace modify direct caller function and register ftrace function are involved in the locking process.

Recommendations Versions prior to 6.0.0-rc6+ #33 should be updated to a newer version that includes the fix. The fix involves using register ftrace function nolock in ftrace modify direct caller.

Exploit

Related Identifiers

CVE-2022-50648

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 · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50648.json · Exploit
• https://osv.dev/vulnerability/CVE-2022-50648 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50648 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50648 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50648 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50648 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50648 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50648 · Vendor Advisory
• https://git.kernel.org/linus/9d2ce78ddcee159eb6a97449e9c68b6d60b9cec4 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://git.kernel.org/stable/c/2482eacb685b6500e158268befbe6c90de5f166a · Note
• https://git.kernel.org/stable/c/9d2ce78ddcee159eb6a97449e9c68b6d60b9cec4 · Note
• https://twitter.com/CVEnew/status/2003198661098930641 · Twitter Post