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UBUNTU-CVE-2017-18249 High

UBUNTU-CVE-2017-18249

The add_free_nid function in fs/f2fs/node.c in the Linux kernel before 4.12 does not properly track an allocated nid, which allows local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads.

Exploit probability Not scored
Published March 26, 2018
Required by Not available
Last source change August 18, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:14.04:LTS linux-aws

26 explicit affected versions

Ubuntu:14.04:LTS linux-lts-xenial

66 explicit affected versions

Ubuntu:16.04:LTS linux

88 explicit affected versions

Ubuntu:16.04:LTS linux-aws

47 explicit affected versions

Ubuntu:16.04:LTS linux-azure

6 explicit affected versions

Ubuntu:16.04:LTS linux-gcp

5 explicit affected versions

Ubuntu:16.04:LTS linux-hwe

26 explicit affected versions

Ubuntu:16.04:LTS linux-kvm

26 explicit affected versions

Ubuntu:16.04:LTS linux-raspi2

60 explicit affected versions

Ubuntu:16.04:LTS linux-snapdragon

58 explicit affected versions

Ubuntu:18.04:LTS linux-snapdragon

4 explicit affected versions

Ubuntu:20.04:LTS linux-azure-fde

26 explicit affected versions

Ubuntu:20.04:LTS linux-gke

51 explicit affected versions

Ubuntu:20.04:LTS linux-raspi2

6 explicit affected versions

Ubuntu:20.04:LTS linux-riscv

12 explicit affected versions

Ubuntu:22.04:LTS linux-intel-iot-realtime

1 explicit affected versions

Ubuntu:22.04:LTS linux-realtime

1 explicit affected versions

Ubuntu:22.04:LTS linux-riscv

23 explicit affected versions

Ubuntu:24.04:LTS linux-azure-6.11

7 explicit affected versions

Ubuntu:24.04:LTS linux-gcp-6.11

7 explicit affected versions

Ubuntu:24.04:LTS linux-hwe-6.11

8 explicit affected versions

Ubuntu:24.04:LTS linux-lowlatency-hwe-6.11

7 explicit affected versions

Ubuntu:24.04:LTS linux-raspi-realtime

1 explicit affected versions

Ubuntu:Pro:14.04:LTS linux

191 explicit affected versions

Ubuntu:Pro:20.04:LTS linux-azure-fde-5.15

61 explicit affected versions

Ubuntu:Pro:FIPS:16.04:LTS linux-fips

3 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities UBUNTU-CVE-2017-18249

The add_free_nid function in fs/f2fs/node.c in the Linux kernel before 4.12 does not properly track an allocated nid, which allows local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads.

View original source

05 / REFERENCES

Further evidence