Answer in brief
CVE-2026-98461 records a Unknown severity vulnerability in Bluetooth: hci_sock: validate event length before filtering. 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 | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <39e99d85071bca0feeec3164a9437ca1bff297fc || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <ebdd49cec380731844ed9df4092a29a014623df4 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2501a3b7b7144d1d11939b355a48ed01f83d0c62 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dca25c204f71be0556a15177dbe037237ac43e5e || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3976bbcd43b9b94c53ac9b0fd28888011588f4cc || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f894f6292d5122cd62d30600736b4a0ae79f7770 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1a92763c2ba721bf113cd83f913fe8c511b4a4dc || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b0a6cf99afd57a39598b1beca0e86ef5004980de | 39e99d85071bca0feeec3164a9437ca1bff297fc, ebdd49cec380731844ed9df4092a29a014623df4, 2501a3b7b7144d1d11939b355a48ed01f83d0c62, dca25c204f71be0556a15177dbe037237ac43e5e, 3976bbcd43b9b94c53ac9b0fd28888011588f4cc, f894f6292d5122cd62d30600736b4a0ae79f7770, 1a92763c2ba721bf113cd83f913fe8c511b4a4dc, b0a6cf99afd57a39598b1beca0e86ef5004980de |
| Linux/Linuxgeneric | 2.6.12 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sock: validate event length before filtering is_filtered_packet() reads the event code from skb->data[0] without first checking that the skb is nonempty. When an opcode filter is configured, it also reads the command opcode at offsets 3 or 4 without checking that a Command Complete or Command Status event is long enough. hci_send_to_sock() invokes the filter before hci_event_packet() validates the event header. A malformed event supplied by a controller or a vhci device can therefore cause an out-of-bounds read. Keep the unmasked event code for the opcode checks. The masked value is needed for the 64-bit event bitmap, but using it to identify command events aliases event codes above 0x3f. In particular, Synchronous Train Complete (0x4f) was treated as Command Status (0x0f) even though its payload has no opcode. Reject actual command events that are too short for the field being inspected. A truncated command event cannot match a configured opcode.
Quoted source text, attributed separately from HOL analysis.