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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-49890 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: capabilities: fix potential memleak on error path from vfs_getxattr_alloc() In cap_inode_getsecurity(), we will use vfs_getxattr_alloc() to complete the memory allocation of tmpbuf, if we have completed the memory allocation of tmpbuf, but failed to call handler->get(...), there will be a memleak in below logic: |-- ret = (int)vfs_getxattr_alloc(mnt_userns, ...) | /* ^^^ alloc for tmpbuf */ |-- value = krealloc(*xattr_value, error + 1, flags) | /* ^^^ alloc memory */ |-- error = handler->get(handler, ...) | /* error! */ |-- *xattr_value = value | /* xattr_value is &tmpbuf (memory leak!) */ So we will try to free(tmpbuf) after vfs_getxattr_alloc() fails to fix it. [PM: subject line and backtrace tweaks]


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0c3e6288da650d1ec911a259c77bc2d88e498603 kernel.org Patch 
https://git.kernel.org/stable/c/2de8eec8afb75792440b8900a01d52b8f6742fd1 kernel.org Patch 
https://git.kernel.org/stable/c/6bb00eb21c0fbf18e5d3538c9ff0cf63fd0ace85 kernel.org Patch 
https://git.kernel.org/stable/c/7480aeff0093d8c54377553ec6b31110bea37b4d kernel.org Patch 
https://git.kernel.org/stable/c/8cf0a1bc12870d148ae830a4ba88cfdf0e879cee kernel.org Patch 
https://git.kernel.org/stable/c/90577bcc01c4188416a47269f8433f70502abe98 kernel.org Patch 
https://git.kernel.org/stable/c/cdf01c807e974048c43c7fd3ca574f6086a57906 kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-401 Missing Release of Memory after Effective Lifetime cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-49890
NVD Published Date:
05/01/2025
NVD Last Modified:
05/07/2025
Source:
kernel.org