Answer in brief
CVE-2026-53400 records a Unknown severity vulnerability in i2c: core: fix adapter registration race. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-53400 records a Unknown severity vulnerability in i2c: core: fix adapter registration race. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6e13e641841833cc2aa5baefe89bb04bc388801b <2e57c788e71f1763445f812eba4e0b4a2fbd0646 || >=6e13e641841833cc2aa5baefe89bb04bc388801b <a4365bc41baaf67f3a5aa8556d23544e6ec7480a || >=6e13e641841833cc2aa5baefe89bb04bc388801b <1febb174815bcae56d73587e99e8f87e02f0784d || >=6e13e641841833cc2aa5baefe89bb04bc388801b <da9d8d9711f78deebc202d0cffcf577e45ee8621 || >=6e13e641841833cc2aa5baefe89bb04bc388801b <78793c75dc6d0ff2e4d50ad617349b328a99054e || >=6e13e641841833cc2aa5baefe89bb04bc388801b <6a946038f2a5a8c29048c6af369d4e391448a5c5 || >=6e13e641841833cc2aa5baefe89bb04bc388801b <a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0 || >=6e13e641841833cc2aa5baefe89bb04bc388801b <ba14d7cf2fe7284610a29854bdff22b2537d3ce6 | 2e57c788e71f1763445f812eba4e0b4a2fbd0646, a4365bc41baaf67f3a5aa8556d23544e6ec7480a, 1febb174815bcae56d73587e99e8f87e02f0784d, da9d8d9711f78deebc202d0cffcf577e45ee8621, 78793c75dc6d0ff2e4d50ad617349b328a99054e, 6a946038f2a5a8c29048c6af369d4e391448a5c5, a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0, ba14d7cf2fe7284610a29854bdff22b2537d3ce6 |
| Linux/Linuxgeneric | 2.6.22 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6e13e641841833cc2aa5baefe89bb04bc388801b <2e57c788e71f1763445f812eba4e0b4a2fbd0646 || >=6e13e641841833cc2aa5baefe89bb04bc388801b <a4365bc41baaf67f3a5aa8556d23544e6ec7480a || >=6e13e641841833cc2aa5baefe89bb04bc388801b <1febb174815bcae56d73587e99e8f87e02f0784d || >=6e13e641841833cc2aa5baefe89bb04bc388801b <da9d8d9711f78deebc202d0cffcf577e45ee8621 || >=6e13e641841833cc2aa5baefe89bb04bc388801b <78793c75dc6d0ff2e4d50ad617349b328a99054e || >=6e13e641841833cc2aa5baefe89bb04bc388801b <6a946038f2a5a8c29048c6af369d4e391448a5c5 || >=6e13e641841833cc2aa5baefe89bb04bc388801b <a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0 || >=6e13e641841833cc2aa5baefe89bb04bc388801b <ba14d7cf2fe7284610a29854bdff22b2537d3ce6 | 2e57c788e71f1763445f812eba4e0b4a2fbd0646, a4365bc41baaf67f3a5aa8556d23544e6ec7480a, 1febb174815bcae56d73587e99e8f87e02f0784d, da9d8d9711f78deebc202d0cffcf577e45ee8621, 78793c75dc6d0ff2e4d50ad617349b328a99054e, 6a946038f2a5a8c29048c6af369d4e391448a5c5, a4c8094bbf4c6fa68b17e3b16f6a0a1b7a14f3e0, ba14d7cf2fe7284610a29854bdff22b2537d3ce6 |
| Linux/Linuxgeneric | 2.6.22 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.