A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function security_inode_alloc to fail with f…

published 2022-08-24 4 y ago modified 2026-10-14 25 d ago also EUVD-2022-35199

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

A flaw use after free in the Linux kernel NILFS file system was found in the way user triggers function security_inode_alloc to fail with following call to function nilfs_mdt_destroy. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.

Patch / fix

fixed in 1 distros 4

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1

debian ubuntu suse arch linux

linux Debian 14, Debian 13, Debian 12 6.0.2-1

debian advisories DEBIAN-CVE-2022-2978

linux Ubuntu 18.04 LTS 4.15.0-197.208
linux Ubuntu 20.04 LTS 5.4.0-132.148
linux Ubuntu 22.04 LTS 5.15.0-53.59
linux-aws Ubuntu 18.04 LTS 4.15.0-1143.155
linux-aws Ubuntu 20.04 LTS 5.4.0-1089.97
linux-aws Ubuntu 22.04 LTS 5.15.0-1023.27
linux-gcp Ubuntu 20.04 LTS 5.4.0-1093.102
linux-gcp Ubuntu 22.04 LTS 5.15.0-1022.29

ubuntu advisories UBUNTU-CVE-2022-2978

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel-rt SLE Micro 5.5 5.14.21-150500.13.109.1
kernel-source-rt SLE Micro 5.5 5.14.21-150500.13.109.1
kernel-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.133.1
kernel-source-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.133.1
kernel-64kb SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS, SLE High Performance Computing 15 SP4-ESPOS 5.14.21-150400.24.179.1
kernel-syms SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 5.14.21-150400.24.179.1
kernel-source SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 5.14.21-150400.24.179.1
kernel-default SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +7 more 5.14.21-150400.24.179.1

suse advisories SUSE-SU-2025:3761-1 SUSE-SU-2025:3716-1 SUSE-SU-2025:03628-1 SUSE-SU-2025:03626-1 SUSE-SU-2025:03615-1 SUSE-SU-2025:03613-1

linux-lts Arch Linux 6.2-1
linux-hardened Arch Linux 6.2-1
linux-zen Arch Linux 6.2-1
linux Arch Linux 6.2-1

arch linux advisories AVG-2834 AVG-2835 AVG-2836 AVG-2837

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-2978 updated 2026-11-05 cvss 7.0

kernel: use-after-free in nilfs_mdt_destroy

Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
affected: no fix planned “Out of support scope”
Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-166-11 updated 2024-04-09 cvss 7.8

Siemens SIMATIC S7-1500 TM MFP Linux Kernel

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem <V1.1
affected: fixed in V1.1, workaround support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

n/a Kernel
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness

CWE-416 Use After Free

Technology feeds

Linux kernel rss critical rss

References

lore.kernel.org /linux-fsdevel/20220816040859.659129-1-dzm91%40hust.edu.cn/T/#u
lists.debian.org /debian-lts-announce/2022/12/msg00034.html
mailing-list, third-party-advisory
cert-portal.siemens.com /productcert/html/ssa-794697.html

Sources

CVE List CVE-2022-2978
NVD CVE-2022-2978

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary