Answer in brief
CVE-2026-45838 records a Medium severity (CVSS 5.5) vulnerability in bpf: fix end-of-list detection in cgroup_storage_get_next_key(). 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-2026-45838 records a Medium severity (CVSS 5.5) vulnerability in bpf: fix end-of-list detection in cgroup_storage_get_next_key(). 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.
CVSS is 5.5. 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 | >=de9cbbaadba5adf88a19e46df61f7054000838f6 <0f3d9dd5e1fd52b39e25328307c6a694e994ffe3 || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <26d3339e465e54107bd85884341d1609c5300d6a || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6 || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <b4b5a20bed82130da2f2818f04d52378952fbd0b || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <85a2f30e40f7468db732f55659bc6318874f49af || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <32ce55d424395904986f5066f8755f6cb9993377 || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <fc39753b7f92e09177777e9c648afe5aa3abb81f || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <5828b9e5b272ecff7cf5d345128d3de7324117f7 | 0f3d9dd5e1fd52b39e25328307c6a694e994ffe3, 26d3339e465e54107bd85884341d1609c5300d6a, 2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6, b4b5a20bed82130da2f2818f04d52378952fbd0b, 85a2f30e40f7468db732f55659bc6318874f49af, 32ce55d424395904986f5066f8755f6cb9993377, fc39753b7f92e09177777e9c648afe5aa3abb81f, 5828b9e5b272ecff7cf5d345128d3de7324117f7 |
| Linux/Linuxgeneric | 4.19 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
In the Linux kernel, the following vulnerability has been resolved: bpf: fix end-of-list detection in cgroup_storage_get_next_key() list_next_entry() never returns NULL -- when the current element is the last entry it wraps to the list head via container_of(). The subsequent NULL check is therefore dead code and get_next_key() never returns -ENOENT for the last element, instead reading storage->key from a bogus pointer that aliases internal map fields and copying the result to userspace. Replace it with list_entry_is_head() so the function correctly returns -ENOENT when there are no more entries.
Quoted source text, attributed separately from HOL analysis.
CVSS is 5.5. 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 | >=de9cbbaadba5adf88a19e46df61f7054000838f6 <0f3d9dd5e1fd52b39e25328307c6a694e994ffe3 || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <26d3339e465e54107bd85884341d1609c5300d6a || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6 || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <b4b5a20bed82130da2f2818f04d52378952fbd0b || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <85a2f30e40f7468db732f55659bc6318874f49af || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <32ce55d424395904986f5066f8755f6cb9993377 || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <fc39753b7f92e09177777e9c648afe5aa3abb81f || >=de9cbbaadba5adf88a19e46df61f7054000838f6 <5828b9e5b272ecff7cf5d345128d3de7324117f7 | 0f3d9dd5e1fd52b39e25328307c6a694e994ffe3, 26d3339e465e54107bd85884341d1609c5300d6a, 2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6, b4b5a20bed82130da2f2818f04d52378952fbd0b, 85a2f30e40f7468db732f55659bc6318874f49af, 32ce55d424395904986f5066f8755f6cb9993377, fc39753b7f92e09177777e9c648afe5aa3abb81f, 5828b9e5b272ecff7cf5d345128d3de7324117f7 |
| Linux/Linuxgeneric | 4.19 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 26, 2026
In the Linux kernel, the following vulnerability has been resolved: bpf: fix end-of-list detection in cgroup_storage_get_next_key() list_next_entry() never returns NULL -- when the current element is the last entry it wraps to the list head via container_of(). The subsequent NULL check is therefore dead code and get_next_key() never returns -ENOENT for the last element, instead reading storage->key from a bogus pointer that aliases internal map fields and copying the result to userspace. Replace it with list_entry_is_head() so the function correctly returns -ENOENT when there are no more entries.
Quoted source text, attributed separately from HOL analysis.