9.8
CRITICAL
CVSS 3.1
CVE-2026-46137
mptcp: pm: ADD_ADDR rtx: fix potential data-race
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock(). If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.
Details
INFO
Published Date :
May 28, 2026, 10:16 a.m.
Last Modified :
June 24, 2026, 5:32 p.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
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 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Address data races in MPTCP by acquiring the socket lock during timer callbacks.
- Acquire socket lock with bh_lock_sock() in mptcp_pm_add_timer().
- Retry soon if the socket is in use.
- Apply provided kernel patch.
- Update to a patched Linux kernel version.
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-2026-46137.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46137 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-2026-46137
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-2026-46137 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46137 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.
-
Initial Analysis by [email protected]
Jun. 24, 2026
Action Type Old Value New Value Added CWE CWE-362 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.30 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.141 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.91 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.176 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.210 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.259 Added Reference Type kernel.org: https://git.kernel.org/stable/c/013dcdc1961543b9a3433466bc8c79a2f4ca75b5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/23079e0b7742ec114d3507c3e3aad01b7b69e4af Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2ad56e434199ca24a812bb353667aa1c3860f513 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b35605e1f1e877038c8c9d499babbc891cdd234f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cc3c0399361efaaf7ae64262eb3f70829b1189c6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d9b272a85fe6b8f993e37915311e4038c814a533 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 19, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/23079e0b7742ec114d3507c3e3aad01b7b69e4af Added Reference https://git.kernel.org/stable/c/b35605e1f1e877038c8c9d499babbc891cdd234f Added Reference https://git.kernel.org/stable/c/d9b272a85fe6b8f993e37915311e4038c814a533 Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '013dcdc1961543b9a3433466bc8c79a2f4ca75b5', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '2ad56e434199ca24a812bb353667aa1c3860f513', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': 'cc3c0399361efaaf7ae64262eb3f70829b1189c6', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '5cd6e0ad79d2615264f63929f8b457ad97ae550d', 'versionType': 'git'}], 'programFiles': ['net/mptcp/pm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.30', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.7', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/mptcp/pm.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': 'd9b272a85fe6b8f993e37915311e4038c814a533', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '23079e0b7742ec114d3507c3e3aad01b7b69e4af', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': 'b35605e1f1e877038c8c9d499babbc891cdd234f', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '013dcdc1961543b9a3433466bc8c79a2f4ca75b5', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '2ad56e434199ca24a812bb353667aa1c3860f513', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': 'cc3c0399361efaaf7ae64262eb3f70829b1189c6', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '5cd6e0ad79d2615264f63929f8b457ad97ae550d', 'versionType': 'git'}], 'programFiles': ['net/mptcp/pm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.259', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.210', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.176', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.30', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.7', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/mptcp/pm.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 17, 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': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '013dcdc1961543b9a3433466bc8c79a2f4ca75b5', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '2ad56e434199ca24a812bb353667aa1c3860f513', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': 'cc3c0399361efaaf7ae64262eb3f70829b1189c6', 'versionType': 'git'}, {'status': 'affected', 'version': '00cfd77b9063dcdf3628a7087faba60de85a9cc8', 'lessThan': '5cd6e0ad79d2615264f63929f8b457ad97ae550d', 'versionType': 'git'}], 'programFiles': ['net/mptcp/pm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.30', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.7', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/mptcp/pm.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 30, 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 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock(). If the socket is in use, retry again soon after, similar to what is done with the keepalive timer. Added Reference https://git.kernel.org/stable/c/013dcdc1961543b9a3433466bc8c79a2f4ca75b5 Added Reference https://git.kernel.org/stable/c/2ad56e434199ca24a812bb353667aa1c3860f513 Added Reference https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d Added Reference https://git.kernel.org/stable/c/6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3 Added Reference https://git.kernel.org/stable/c/cc3c0399361efaaf7ae64262eb3f70829b1189c6
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.