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CVE-2021-47294 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: netrom: Decrease sock refcount when sock timers expire Commit 63346650c1a9 ("netrom: switch to sock timer API") switched to use sock timer API. It replaces mod_timer() by sk_reset_timer(), and del_timer() by sk_stop_timer(). Function sk_reset_timer() will increase the refcount of sock if it is called on an inactive timer, hence, in case the timer expires, we need to decrease the refcount ourselves in the handler, otherwise, the sock refcount will be unbalanced and the sock will never be freed.


Severity



CVSS 4.0 Severity and Metrics:

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


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

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Hyperlink Resource
https://git.kernel.org/stable/c/25df44e90ff5959b5c24ad361b648504a7e39ef3
https://git.kernel.org/stable/c/48866fd5c361ea417ed24b43fc2a7dc2f5b060ef
https://git.kernel.org/stable/c/517a16b1a88bdb6b530f48d5d153478b2552d9a8
https://git.kernel.org/stable/c/6811744bd0efb9e472cb15d066cdb460beb8cb8a
https://git.kernel.org/stable/c/853262355518cd1247515b74e83fabf038aa6c29
https://git.kernel.org/stable/c/9619cc7d97c3aa8ed3cfd2b8678b74fb6d6c7950
https://git.kernel.org/stable/c/a01634bf91f2b6c42583770eb6815fb6d1e251cf
https://git.kernel.org/stable/c/bc1660206c3723c37ed4d622ad81781f1e987250

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47294
NVD Published Date:
05/21/2024
NVD Last Modified:
05/21/2024
Source:
kernel.org