CVE-2022-49672
Linux Tun Device NAPI Unlink Race
Description
In the Linux kernel, the following vulnerability has been resolved: net: tun: unlink NAPI from device on destruction Syzbot found a race between tun file and device destruction. NAPIs live in struct tun_file which can get destroyed before the netdev so we have to del them explicitly. The current code is missing deleting the NAPI if the queue was detached first.
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
Feb. 26, 2025, 7:01 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2022-49672.
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The following list is the news that have been mention
CVE-2022-49672 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49672 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net: tun: unlink NAPI from device on destruction Syzbot found a race between tun file and device destruction. NAPIs live in struct tun_file which can get destroyed before the netdev so we have to del them explicitly. The current code is missing deleting the NAPI if the queue was detached first. Added Reference https://git.kernel.org/stable/c/3b9bc84d311104906d2b4995a9a02d7b7ddab2db Added Reference https://git.kernel.org/stable/c/8145f77d38de4f88b8a69e1463f5c09ba189d77c Added Reference https://git.kernel.org/stable/c/82e729aee59acefe135fceffadcbc5b86dd4f1b9 Added Reference https://git.kernel.org/stable/c/8661d4b8faa2f7ee7a559969c0a7c57f077b1728 Added Reference https://git.kernel.org/stable/c/a8cf919022373c97a84fe596bbea544f909c485d Added Reference https://git.kernel.org/stable/c/bec1be0a745ab420718217e3e0d9542a75108989
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49672 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49672
weaknesses.