Answer in brief
CVE-2026-63926 records a Unknown severity vulnerability in bpf: sockmap: fix tail fragment offset in bpf_msg_push_data. 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-2026-63926 records a Unknown severity vulnerability in bpf: sockmap: fix tail fragment offset in bpf_msg_push_data. 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 | >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <f14609d8146707452e0822f3c8154674ce677251 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <d81b323af2dcee47573907ccb89c0df9b45cb2e2 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <aeb95146848d12206e1b2cfacd4f40e21ce81d94 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <96b72672ce849a1402730238e64d9b20bf06a96d || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <3075c21d2d76c0067f4a382765b43d6cc10470f1 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <5e19028667963fb371ebb00cecc2a473ef92056b || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <63f64a510c7917658ddf4d073ece73914ee25346 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <f72eed9b84fb771019a955908132410a9ba9ea3f | f14609d8146707452e0822f3c8154674ce677251, d81b323af2dcee47573907ccb89c0df9b45cb2e2, aeb95146848d12206e1b2cfacd4f40e21ce81d94, 96b72672ce849a1402730238e64d9b20bf06a96d, 3075c21d2d76c0067f4a382765b43d6cc10470f1, 5e19028667963fb371ebb00cecc2a473ef92056b, 63f64a510c7917658ddf4d073ece73914ee25346, f72eed9b84fb771019a955908132410a9ba9ea3f |
| Linux/Linuxgeneric | 4.20 | 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: bpf: sockmap: fix tail fragment offset in bpf_msg_push_data When bpf_msg_push_data() inserts data in the middle of a scatterlist entry, it splits the original entry into a left fragment and a right fragment. The right fragment offset is page-local, but the code advances it with `start`, which is the message-global insertion point. For inserts into a non-first SG entry, this over-advances the offset and leaves the split layout inconsistent. Advance the right fragment offset by the fragment-local delta, `start - offset`, which matches the length removed from the front of the original entry.
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 | >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <f14609d8146707452e0822f3c8154674ce677251 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <d81b323af2dcee47573907ccb89c0df9b45cb2e2 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <aeb95146848d12206e1b2cfacd4f40e21ce81d94 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <96b72672ce849a1402730238e64d9b20bf06a96d || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <3075c21d2d76c0067f4a382765b43d6cc10470f1 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <5e19028667963fb371ebb00cecc2a473ef92056b || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <63f64a510c7917658ddf4d073ece73914ee25346 || >=6fff607e2f14bd7c63c06c464a6f93b8efbabe28 <f72eed9b84fb771019a955908132410a9ba9ea3f | f14609d8146707452e0822f3c8154674ce677251, d81b323af2dcee47573907ccb89c0df9b45cb2e2, aeb95146848d12206e1b2cfacd4f40e21ce81d94, 96b72672ce849a1402730238e64d9b20bf06a96d, 3075c21d2d76c0067f4a382765b43d6cc10470f1, 5e19028667963fb371ebb00cecc2a473ef92056b, 63f64a510c7917658ddf4d073ece73914ee25346, f72eed9b84fb771019a955908132410a9ba9ea3f |
| Linux/Linuxgeneric | 4.20 | 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: bpf: sockmap: fix tail fragment offset in bpf_msg_push_data When bpf_msg_push_data() inserts data in the middle of a scatterlist entry, it splits the original entry into a left fragment and a right fragment. The right fragment offset is page-local, but the code advances it with `start`, which is the message-global insertion point. For inserts into a non-first SG entry, this over-advances the offset and leaves the split layout inconsistent. Advance the right fragment offset by the fragment-local delta, `start - offset`, which matches the length removed from the front of the original entry.
Quoted source text, attributed separately from HOL analysis.