CVE-2026-74427
afs: Fix netns teardown to cancel the preallocation charger
Description
In the Linux kernel, the following vulnerability has been resolved: afs: Fix netns teardown to cancel the preallocation charger Fix the teardown of an afs network namespace to make sure it cancels the work item that keeps the preallocated rxrpc call/conn/peer queue charged before incoming calls are disabled (i.e. listen 0). Also, if net->live is false because the afs netns is being deleted, make afs_charge_preallocation() skip charging and make afs_rx_new_call() avoid requeuing the charger. (This was found by AI review).
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 15, 2026, 6:22 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74427
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel to the latest stable version.
- Apply the specific 'afs: Fix netns teardown' patch.
- Ensure network namespace teardown logic is corrected.
- Verify resource charging mechanisms are properly cancelled.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74427.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74427 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-2026-74427
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74427 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74427 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.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '00e907127e6f86d0f9b122d9b4347a8aa09a8b61', 'lessThan': '63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9', 'versionType': 'git'}, {'status': 'affected', 'version': '00e907127e6f86d0f9b122d9b4347a8aa09a8b61', 'lessThan': 'f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1', 'versionType': 'git'}, {'status': 'affected', 'version': '00e907127e6f86d0f9b122d9b4347a8aa09a8b61', 'lessThan': '59e8b7652f6cbfb62d377ead0ad553c1b4e39a7a', 'versionType': 'git'}, {'status': 'affected', 'version': '00e907127e6f86d0f9b122d9b4347a8aa09a8b61', 'lessThan': '85d5fb80fe4f0cc836b6df83f26de204fe102ff7', 'versionType': 'git'}, {'status': 'affected', 'version': '00e907127e6f86d0f9b122d9b4347a8aa09a8b61', 'lessThan': 'a33975ff2b6ea47b8f29956403374b1cdd057539', 'versionType': 'git'}, {'status': 'affected', 'version': '00e907127e6f86d0f9b122d9b4347a8aa09a8b61', 'lessThan': 'b83ecf80e28afb7b6595ba79932e77ca68a5a83d', 'versionType': 'git'}, {'status': 'affected', 'version': '00e907127e6f86d0f9b122d9b4347a8aa09a8b61', 'lessThan': 'eec89c5f8e1adc1de4824042ef75f62aed804153', 'versionType': 'git'}, {'status': 'affected', 'version': '00e907127e6f86d0f9b122d9b4347a8aa09a8b61', 'lessThan': '47694fbc9d24ab6bf210f91e8efe06a10a478064', 'versionType': 'git'}], 'programFiles': ['fs/afs/rxrpc.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/afs/rxrpc.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: afs: Fix netns teardown to cancel the preallocation charger Fix the teardown of an afs network namespace to make sure it cancels the work item that keeps the preallocated rxrpc call/conn/peer queue charged before incoming calls are disabled (i.e. listen 0). Also, if net->live is false because the afs netns is being deleted, make afs_charge_preallocation() skip charging and make afs_rx_new_call() avoid requeuing the charger. (This was found by AI review). Added Reference https://git.kernel.org/stable/c/47694fbc9d24ab6bf210f91e8efe06a10a478064 Added Reference https://git.kernel.org/stable/c/59e8b7652f6cbfb62d377ead0ad553c1b4e39a7a Added Reference https://git.kernel.org/stable/c/63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9 Added Reference https://git.kernel.org/stable/c/85d5fb80fe4f0cc836b6df83f26de204fe102ff7 Added Reference https://git.kernel.org/stable/c/a33975ff2b6ea47b8f29956403374b1cdd057539 Added Reference https://git.kernel.org/stable/c/b83ecf80e28afb7b6595ba79932e77ca68a5a83d Added Reference https://git.kernel.org/stable/c/eec89c5f8e1adc1de4824042ef75f62aed804153 Added Reference https://git.kernel.org/stable/c/f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1