CVE-2026-53296
mailbox: mailbox-test: free channels on probe error
Description
In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: free channels on probe error On probe error, free the previously obtained channels. This not only prevents a leak, but also UAF scenarios because the client structure will be removed nonetheless because it was allocated with devm.
INFO
Published Date :
June 26, 2026, 8:17 p.m.
Last Modified :
July 8, 2026, 3:52 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Apply the Linux kernel patch for mailbox.
- Free previously obtained channels on probe error.
- Ensure client structure is removed on devm allocation.
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-2026-53296.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53296 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-2026-53296
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-2026-53296 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53296 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]
Jul. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *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) 6.13 up to (excluding) 6.18.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.175 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.209 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.4 up to (excluding) 5.10.258 Added Reference Type kernel.org: https://git.kernel.org/stable/c/02beb178e2e159daeb8f992d7abb16a37da31664 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/15c4cc3850cfe1b973eb7b63c02314b267f06a64 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/187069ccc3474516af32350e20d7e449160fa6de Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6c6ce2ccb4fcf1617fec83f91b21aa0265f30701 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/742001919653e7313b4e91780c5d108be1692365 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/81c9e7e4030e71391ab479c4c6e17b64802577aa Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c02053a9055d5fdfd32432287cca8958db1d5bc5 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 26, 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': '8ea4484d0c2bb4e2152261943fa1a3522654b1c7', 'lessThan': '0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b', 'versionType': 'git'}, {'status': 'affected', 'version': '8ea4484d0c2bb4e2152261943fa1a3522654b1c7', 'lessThan': '15c4cc3850cfe1b973eb7b63c02314b267f06a64', 'versionType': 'git'}, {'status': 'affected', 'version': '8ea4484d0c2bb4e2152261943fa1a3522654b1c7', 'lessThan': '187069ccc3474516af32350e20d7e449160fa6de', 'versionType': 'git'}, {'status': 'affected', 'version': '8ea4484d0c2bb4e2152261943fa1a3522654b1c7', 'lessThan': '81c9e7e4030e71391ab479c4c6e17b64802577aa', 'versionType': 'git'}, {'status': 'affected', 'version': '8ea4484d0c2bb4e2152261943fa1a3522654b1c7', 'lessThan': '6c6ce2ccb4fcf1617fec83f91b21aa0265f30701', 'versionType': 'git'}, {'status': 'affected', 'version': '8ea4484d0c2bb4e2152261943fa1a3522654b1c7', 'lessThan': '742001919653e7313b4e91780c5d108be1692365', 'versionType': 'git'}, {'status': 'affected', 'version': '8ea4484d0c2bb4e2152261943fa1a3522654b1c7', 'lessThan': '02beb178e2e159daeb8f992d7abb16a37da31664', 'versionType': 'git'}, {'status': 'affected', 'version': '8ea4484d0c2bb4e2152261943fa1a3522654b1c7', 'lessThan': 'c02053a9055d5fdfd32432287cca8958db1d5bc5', 'versionType': 'git'}], 'programFiles': ['drivers/mailbox/mailbox-test.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.258', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.209', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.175', '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': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/mailbox/mailbox-test.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: free channels on probe error On probe error, free the previously obtained channels. This not only prevents a leak, but also UAF scenarios because the client structure will be removed nonetheless because it was allocated with devm. Added Reference https://git.kernel.org/stable/c/02beb178e2e159daeb8f992d7abb16a37da31664 Added Reference https://git.kernel.org/stable/c/0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b Added Reference https://git.kernel.org/stable/c/15c4cc3850cfe1b973eb7b63c02314b267f06a64 Added Reference https://git.kernel.org/stable/c/187069ccc3474516af32350e20d7e449160fa6de Added Reference https://git.kernel.org/stable/c/6c6ce2ccb4fcf1617fec83f91b21aa0265f30701 Added Reference https://git.kernel.org/stable/c/742001919653e7313b4e91780c5d108be1692365 Added Reference https://git.kernel.org/stable/c/81c9e7e4030e71391ab479c4c6e17b64802577aa Added Reference https://git.kernel.org/stable/c/c02053a9055d5fdfd32432287cca8958db1d5bc5