Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 before f14609d8146707452e0822f3c8154674ce677251; affected 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 before d81b323af2dcee47573907ccb89c0df9b45cb2e2; affected 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 before aeb95146848d12206e1b2cfacd4f40e21ce81d94; affected 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 before 96b72672ce849a1402730238e64d9b20bf06a96d; affected 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 before 3075c21d2d76c0067f4a382765b43d6cc10470f1; affected 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 before 5e19028667963fb371ebb00cecc2a473ef92056b; affected 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 before 63f64a510c7917658ddf4d073ece73914ee25346; affected 6fff607e2f14bd7c63c06c464a6f93b8efbabe28 before f72eed9b84fb771019a955908132410a9ba9ea3f |
| Linux / Linux | affected 4.20; unaffected 0 before 4.20; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/f14609d8146707452e0822f3c8154674ce677251
- https://git.kernel.org/stable/c/d81b323af2dcee47573907ccb89c0df9b45cb2e2
- https://git.kernel.org/stable/c/aeb95146848d12206e1b2cfacd4f40e21ce81d94
- https://git.kernel.org/stable/c/96b72672ce849a1402730238e64d9b20bf06a96d
- https://git.kernel.org/stable/c/3075c21d2d76c0067f4a382765b43d6cc10470f1
- https://git.kernel.org/stable/c/5e19028667963fb371ebb00cecc2a473ef92056b
- https://git.kernel.org/stable/c/63f64a510c7917658ddf4d073ece73914ee25346
- https://git.kernel.org/stable/c/f72eed9b84fb771019a955908132410a9ba9ea3f
ADP enrichment
No English description supplied.
No references supplied.