CVE-2017-18241 — NULL Pointer Dereference in Kernel

CWE-476 — NULL Pointer Dereference10 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 74.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Linux KernelDebian LinuxCanonical Ubuntu Linux+1 more
Timeline
PublishedMar 21
Latest updateMay 14

Description

fs/f2fs/segment.c in the Linux kernel before 4.13 allows local users to cause a denial of service (NULL pointer dereference and panic) by using a noflush_merge option that triggers a NULL value for a flush_cmd_control data structure.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel< 4.13
▶Debianlinux/linux_kernel< 4.13.4-1+3
▶Ubuntulinux/linux_kernel< 4.4.0-143.169
▶debiandebian/linux< linux 4.13.4-1 (bookworm)

Also affects: Debian Linux 8.0, 9.0, Ubuntu Linux 14.04, 16.04

Patches

Patch: git.kernel.org ↗Patch: github.com ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

4
GHSA
GHSA-fmfp-q8w9-qgxv: fs/f2fs/segment↗2022-05-14
▶
OSV
linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities↗2019-03-15
▶
OSV
linux-lts-xenial, linux-aws vulnerabilities↗2019-03-15
▶
OSV
CVE-2017-18241: fs/f2fs/segment↗2018-03-21
▶

📋Vendor Advisories

4
Ubuntu
Linux kernel (Xenial HWE) vulnerabilities↗2019-03-15
▶
Ubuntu
Linux kernel vulnerabilities↗2019-03-15
▶
Red Hat
kernel: Null pointer dereference in fs/f2fs/segment.c via mounting fs with noflush_merge option allows local denial of service↗2017-06-01
▶
Debian
CVE-2017-18241: linux - fs/f2fs/segment.c in the Linux kernel before 4.13 allows local users to cause a ...↗2017
▶

💬Community

1
Bugzilla
CVE-2017-18241 kernel: Null pointer dereference in fs/f2fs/segment.c via mounting fs with noflush_merge option allows local denial of service↗2018-03-22
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