CVE-2021-45868

Advisory lineage Upstream: 0 Downstream: 19
Modified
Published: 18 Mar 2022, 06:22
Last modified:04 Aug 2024, 04:54

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.22% LOW
0% probability +0.07%
KEV
Not listed
Ransomware
No reports
Public exploits
3 found
Dark Web
Not detected

Timeline

18 Mar 2022, 06:22
Published
Vulnerability first disclosed
04 Aug 2024, 04:54
Last Modified
Vulnerability information updated

Description

In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.22%• Percentile: 44%

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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_kernel

    < 5.15.3

  • netapp•h300e

    na

  • netapp•h300s_firmware

    na

  • netapp•h410c_firmware

    na

  • netapp•h410s_firmware

    na

  • netapp•h500e

    na

  • netapp•h500s_firmware

    na

  • netapp•h700e

    na

  • netapp•h700s_firmware

    na

References (6)