7.8

CVE-2022-50367: fs: fix UAF/GPF bug in nilfs_mdt_destroy

Modified
AliasesUBUNTU-CVE-2022-50367DEBIAN-CVE-2022-50367
Published 17-09-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-50367 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 25 · Related 10
RHSA-2025:19409RHSA-2025:19886RHSA-2025:19931RHSA-2025:19932RHSA-2025:21051RHSA-2025:21083

Timeline

  1. 17-09-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fs: fix UAF/GPF bug in nilfs_mdt_destroy In alloc_inode, inode_init_always() could return -ENOMEM if security_inode_alloc() fails, which causes inode->i_private uninitialized. Then nilfs_is_metadata_file_inode() returns true and nilfs_free_inode() wrongly calls nilfs_mdt_destroy(), which frees the uninitialized inode->i_private and leads to crashes(e.g., UAF/GPF). Fix this by moving security_inode_alloc just prior to this_cpu_inc(nr_inodes)

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu118 products
  • linuxAll versions (No fix recorded) | < 4.15.0-197.208 | < 5.4.0-132.148 | < 5.15.0-53.59
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1143.155 | < 5.4.0-1089.97 | < 5.15.0-1023.27
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d1ff475d7c83289d0a7faef346ea3bbf90818bad | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < c0aa76b0f17f59dd9c9d3463550a2986a1d592e4 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ec2aab115eb38ac4992ea2fcc2a02fbe7af5cf48 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 70e4f70d54e0225f91814e8610477d65f33cefe4 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 1e555c3ed1fce4b278aaebe18a64a934cece57d8 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 64b79e632869ad3ef6c098a4731d559381da1115 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 81de80330fa6907aec32eb54c5619059e6e36452 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2a96b532098284ecf8e4849b8b9e5fc7a28bdee9 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2e488f13755ffbb60f307e991b27024716a33b29 | 2.6.12
  • linux_kernel< 4.9.331 | ≥ 4.10, < 4.14.296 | ≥ 4.15, < 4.19.262 | ≥ 4.20, < 5.4.218 | ≥ 5.5, < 5.10.148 | ≥ 5.11, < 5.15.73 | ≥ 5.16, < 5.19.15 | ≥ 6.0, < 6.0.1
Debian1 product
  • linux< 6.0.2-1

3 vendors · 121 products

References

13 links
Show all 13 references