CVE-2026-72041
espintcp: use sk_msg_free_partial to fix partial send
Description
In the Linux kernel, the following vulnerability has been resolved: espintcp: use sk_msg_free_partial to fix partial send sk_msg_free_partial() ensures consistency of the skmsg at every iteration, without having to manually handle uncharges and offsets. This simplifies the code, and fixes some bugs in skmsg accounting when we don't send the full contents.
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel.
- Apply the fix for espintcp.
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-2026-72041.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72041 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-2026-72041
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-2026-72041 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72041 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:H/I:H/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': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '54d73f18f8919735f4d04d6f43374f75756c0180', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '14c0b42c8a2cd9b5361bbff45b52f69c62c6a286', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': 'a66d45e0ce6d73cd79962d422388e61bfaf0cb50', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': 'a338ce41bc933d8f74c39d9b3b6f1d8ca53d9714', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '007800408002d871f5699bdb944f985896730b8f', 'versionType': 'git'}], 'programFiles': ['net/xfrm/espintcp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', 'versionType': 'semver'}, {'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': ['net/xfrm/espintcp.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '54d73f18f8919735f4d04d6f43374f75756c0180', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '14c0b42c8a2cd9b5361bbff45b52f69c62c6a286', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': 'a66d45e0ce6d73cd79962d422388e61bfaf0cb50', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': 'a338ce41bc933d8f74c39d9b3b6f1d8ca53d9714', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '007800408002d871f5699bdb944f985896730b8f', 'versionType': 'git'}], 'programFiles': ['net/xfrm/espintcp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', 'versionType': 'semver'}, {'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': ['net/xfrm/espintcp.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': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '54d73f18f8919735f4d04d6f43374f75756c0180', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '14c0b42c8a2cd9b5361bbff45b52f69c62c6a286', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': 'a66d45e0ce6d73cd79962d422388e61bfaf0cb50', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': 'a338ce41bc933d8f74c39d9b3b6f1d8ca53d9714', 'versionType': 'git'}, {'status': 'affected', 'version': 'e27cca96cd68fa2c6814c90f9a1cfd36bb68c593', 'lessThan': '007800408002d871f5699bdb944f985896730b8f', 'versionType': 'git'}], 'programFiles': ['net/xfrm/espintcp.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', 'versionType': 'semver'}, {'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': ['net/xfrm/espintcp.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: espintcp: use sk_msg_free_partial to fix partial send sk_msg_free_partial() ensures consistency of the skmsg at every iteration, without having to manually handle uncharges and offsets. This simplifies the code, and fixes some bugs in skmsg accounting when we don't send the full contents. Added Reference https://git.kernel.org/stable/c/007800408002d871f5699bdb944f985896730b8f Added Reference https://git.kernel.org/stable/c/14c0b42c8a2cd9b5361bbff45b52f69c62c6a286 Added Reference https://git.kernel.org/stable/c/54d73f18f8919735f4d04d6f43374f75756c0180 Added Reference https://git.kernel.org/stable/c/a338ce41bc933d8f74c39d9b3b6f1d8ca53d9714 Added Reference https://git.kernel.org/stable/c/a66d45e0ce6d73cd79962d422388e61bfaf0cb50