CVE-2022-49168

Advisory lineage Upstream: 0 Downstream: 14
Analyzed
Published: 26 Feb 2025, 01:55
Last modified:11 May 2026, 18:54

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.03% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Feb 2025, 01:55
Published
Vulnerability first disclosed
11 May 2026, 18:54
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not clean up repair bio if submit fails The submit helper will always run bio_endio() on the bio if it fails to submit, so cleaning up the bio just leads to a variety of use-after-free and NULL pointer dereference bugs because we race with the endio function that is cleaning up the bio. Instead just return BLK_STS_OK as the repair function has to continue to process the rest of the pages, and the endio for the repair bio will do the appropriate cleanup for the page that it was given.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 7%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • linux•linux

    ≥ 6c387ab20db15f2bd448f7c508e2638101b16ea1, < e7e1d15d2bd8c373cf621614ddd17971a2132713 | ≥ 6c387ab20db15f2bd448f7c508e2638101b16ea1, < 7170875083254b51fcc5d67f96640977083f481e | ≥ 6c387ab20db15f2bd448f7c508e2638101b16ea1, < e76c78c48902dae6fa612749f59162bca0a79e0b | ≥ 6c387ab20db15f2bd448f7c508e2638101b16ea1, < d1cb11fb45ebbb1e7dfe5e9038b32ea72c184b14 | ≥ 6c387ab20db15f2bd448f7c508e2638101b16ea1, < 8cbc3001a3264d998d6b6db3e23f935c158abd4d | 3.18

  • linux•linux_kernel

    < 5.10.248 | ≥ 5.11, < 5.15.184 | ≥ 5.16, < 5.16.19 | ≥ 5.17, < 5.17.2

References (5)