7.5
HIGH
CVSS 3.1
CVE-2026-72374
afs: Fix callback service message parsers to pass through -EAGAIN
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: afs: Fix callback service message parsers to pass through -EAGAIN The AFS filesystem client uses an rxrpc server to listen for callback notifications. Each callback call type handler has a delivery function that parses the incoming request stream, and this should return -EAGAIN the last packet hasn't yet been seen, but all currently queued received data is consumed. afs_extract_data() does this, but the -EAGAIN return is switched to 0 inadvertantly Fix callback service message parsers to pass through -EAGAIN
Details
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
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for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
The Linux kernel needs to be updated to fix a bug in the AFS filesystem client's callback notification handling.
- Update the Linux kernel to the latest version.
- Apply the specific patch for the AFS callback service.
- Reboot the system after applying the update.
References
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-2026-72374.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72374 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-2026-72374
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-2026-72374 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72374 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.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '26b737b3769e92493fe94c34620399d93ca231ae', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '09c67a7ded481482155b836c8c7f078a3075f8de', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '239cd337c9d047e7097f5b2ebbb41ddfb8180bc6', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '5a39b145a8fb49f316e7ec1f29ba51d68095c7e4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '772850871a2e772e26f9d93f1e9ddd413b3eeaa4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '0acbc09d2aca0432af45cec114f20d55ceafaec4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': 'f14dd036fad3d359f26f1282199cec06b3a9362b', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '0f36469d7ce98b362934113c550d08bb0c784231', 'versionType': 'git'}], 'programFiles': ['fs/afs/cmservice.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-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/afs/cmservice.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '26b737b3769e92493fe94c34620399d93ca231ae', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '09c67a7ded481482155b836c8c7f078a3075f8de', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '239cd337c9d047e7097f5b2ebbb41ddfb8180bc6', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '5a39b145a8fb49f316e7ec1f29ba51d68095c7e4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '772850871a2e772e26f9d93f1e9ddd413b3eeaa4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '0acbc09d2aca0432af45cec114f20d55ceafaec4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': 'f14dd036fad3d359f26f1282199cec06b3a9362b', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '0f36469d7ce98b362934113c550d08bb0c784231', 'versionType': 'git'}], 'programFiles': ['fs/afs/cmservice.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', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/afs/cmservice.c'], 'defaultStatus': 'affected'}] -
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': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '26b737b3769e92493fe94c34620399d93ca231ae', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '09c67a7ded481482155b836c8c7f078a3075f8de', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '239cd337c9d047e7097f5b2ebbb41ddfb8180bc6', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '5a39b145a8fb49f316e7ec1f29ba51d68095c7e4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '772850871a2e772e26f9d93f1e9ddd413b3eeaa4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '0acbc09d2aca0432af45cec114f20d55ceafaec4', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': 'f14dd036fad3d359f26f1282199cec06b3a9362b', 'versionType': 'git'}, {'status': 'affected', 'version': 'd001648ec7cf8b21ae9eec8b9ba4a18295adfb14', 'lessThan': '0f36469d7ce98b362934113c550d08bb0c784231', 'versionType': 'git'}], 'programFiles': ['fs/afs/cmservice.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-rc2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/afs/cmservice.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: afs: Fix callback service message parsers to pass through -EAGAIN The AFS filesystem client uses an rxrpc server to listen for callback notifications. Each callback call type handler has a delivery function that parses the incoming request stream, and this should return -EAGAIN the last packet hasn't yet been seen, but all currently queued received data is consumed. afs_extract_data() does this, but the -EAGAIN return is switched to 0 inadvertantly Fix callback service message parsers to pass through -EAGAIN Added Reference https://git.kernel.org/stable/c/09c67a7ded481482155b836c8c7f078a3075f8de Added Reference https://git.kernel.org/stable/c/0acbc09d2aca0432af45cec114f20d55ceafaec4 Added Reference https://git.kernel.org/stable/c/0f36469d7ce98b362934113c550d08bb0c784231 Added Reference https://git.kernel.org/stable/c/239cd337c9d047e7097f5b2ebbb41ddfb8180bc6 Added Reference https://git.kernel.org/stable/c/26b737b3769e92493fe94c34620399d93ca231ae Added Reference https://git.kernel.org/stable/c/5a39b145a8fb49f316e7ec1f29ba51d68095c7e4 Added Reference https://git.kernel.org/stable/c/772850871a2e772e26f9d93f1e9ddd413b3eeaa4 Added Reference https://git.kernel.org/stable/c/f14dd036fad3d359f26f1282199cec06b3a9362b
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.