7.8
HIGH
CVSS 3.1
CVE-2026-53400
i2c: core: fix adapter registration race
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: i2c: core: fix adapter registration race Adapters can be looked up based on their id using i2c_get_adapter() which takes a reference to the embedded struct device. Make sure that the adapter (including its struct device) has been initialised before adding it to the IDR to avoid accessing uninitialised data which could, for example, lead to NULL-pointer dereferences or use-after-free. Note that the i2c-dev chardev, which is registered from a bus notifier, currently uses i2c_get_adapter() so the adapter needs to be added to the IDR before registration.
Details
INFO
Published Date :
July 19, 2026, 12:16 p.m.
Last Modified :
Aug. 17, 2026, 5:17 a.m.
Remotely Exploit :
No
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 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Fix race condition in adapter registration by ensuring initialization before IDR addition.
- Ensure adapter initialization before adding to IDR.
- Initialize adapter including its struct device.
- Add adapter to IDR before registration.
- Update the Linux kernel.
References
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CVE-2026-53400.
CWE - Common Weakness Enumeration
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specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53400 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53400
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-2026-53400 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53400 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 Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '2e57c788e71f1763445f812eba4e0b4a2fbd0646', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'a4365bc41baaf67f3a5aa8556d23544e6ec7480a', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '1febb174815bcae56d73587e99e8f87e02f0784d', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'da9d8d9711f78deebc202d0cffcf577e45ee8621', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '78793c75dc6d0ff2e4d50ad617349b328a99054e', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '6a946038f2a5a8c29048c6af369d4e391448a5c5', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'ba14d7cf2fe7284610a29854bdff22b2537d3ce6', 'versionType': 'git'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.22'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.22', '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': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.38', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.3', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '2e57c788e71f1763445f812eba4e0b4a2fbd0646', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'a4365bc41baaf67f3a5aa8556d23544e6ec7480a', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '1febb174815bcae56d73587e99e8f87e02f0784d', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'da9d8d9711f78deebc202d0cffcf577e45ee8621', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '78793c75dc6d0ff2e4d50ad617349b328a99054e', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '6a946038f2a5a8c29048c6af369d4e391448a5c5', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'ba14d7cf2fe7284610a29854bdff22b2537d3ce6', 'versionType': 'git'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.22'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.22', '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': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.38', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.3', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'affected'}] -
Initial Analysis by [email protected]
Jul. 29, 2026
Action Type Old Value New Value Added CWE CWE-362 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.95 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.38 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.1.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.212 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.178 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.145 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.22 up to (excluding) 5.10.261 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1febb174815bcae56d73587e99e8f87e02f0784d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2e57c788e71f1763445f812eba4e0b4a2fbd0646 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6a946038f2a5a8c29048c6af369d4e391448a5c5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/78793c75dc6d0ff2e4d50ad617349b328a99054e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a4365bc41baaf67f3a5aa8556d23544e6ec7480a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ba14d7cf2fe7284610a29854bdff22b2537d3ce6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/da9d8d9711f78deebc202d0cffcf577e45ee8621 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 24, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/1febb174815bcae56d73587e99e8f87e02f0784d Added Reference https://git.kernel.org/stable/c/2e57c788e71f1763445f812eba4e0b4a2fbd0646 Added Reference https://git.kernel.org/stable/c/a4365bc41baaf67f3a5aa8556d23544e6ec7480a Added Reference https://git.kernel.org/stable/c/da9d8d9711f78deebc202d0cffcf577e45ee8621 Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '78793c75dc6d0ff2e4d50ad617349b328a99054e', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '6a946038f2a5a8c29048c6af369d4e391448a5c5', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'ba14d7cf2fe7284610a29854bdff22b2537d3ce6', 'versionType': 'git'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.22'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.22', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.38', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.3', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '2e57c788e71f1763445f812eba4e0b4a2fbd0646', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'a4365bc41baaf67f3a5aa8556d23544e6ec7480a', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '1febb174815bcae56d73587e99e8f87e02f0784d', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'da9d8d9711f78deebc202d0cffcf577e45ee8621', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '78793c75dc6d0ff2e4d50ad617349b328a99054e', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '6a946038f2a5a8c29048c6af369d4e391448a5c5', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'ba14d7cf2fe7284610a29854bdff22b2537d3ce6', 'versionType': 'git'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.22'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.22', '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': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.38', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.3', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 20, 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 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 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': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '78793c75dc6d0ff2e4d50ad617349b328a99054e', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': '6a946038f2a5a8c29048c6af369d4e391448a5c5', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0', 'versionType': 'git'}, {'status': 'affected', 'version': '6e13e641841833cc2aa5baefe89bb04bc388801b', 'lessThan': 'ba14d7cf2fe7284610a29854bdff22b2537d3ce6', 'versionType': 'git'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.22'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.22', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.38', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.3', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/i2c/i2c-core-base.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: i2c: core: fix adapter registration race Adapters can be looked up based on their id using i2c_get_adapter() which takes a reference to the embedded struct device. Make sure that the adapter (including its struct device) has been initialised before adding it to the IDR to avoid accessing uninitialised data which could, for example, lead to NULL-pointer dereferences or use-after-free. Note that the i2c-dev chardev, which is registered from a bus notifier, currently uses i2c_get_adapter() so the adapter needs to be added to the IDR before registration. Added Reference https://git.kernel.org/stable/c/6a946038f2a5a8c29048c6af369d4e391448a5c5 Added Reference https://git.kernel.org/stable/c/78793c75dc6d0ff2e4d50ad617349b328a99054e Added Reference https://git.kernel.org/stable/c/a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0 Added Reference https://git.kernel.org/stable/c/ba14d7cf2fe7284610a29854bdff22b2537d3ce6
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.