CVE-2026-98457
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Bluetooth: L2CAP: validate frame length before control and FCS access
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: validate frame length before control and FCS access l2cap_data_rcv() unpacks either a two-byte or four-byte control field without first ensuring that it is present. A short ERTM or streaming-mode frame can therefore cause an out-of-bounds read. There is a second short-frame case when CRC16 is enabled. After the control field is pulled, l2cap_check_fcs() subtracts two from skb->len without checking it. If fewer than two bytes remain, the subtraction wraps; skb_trim() leaves the buffer unchanged and the subsequent FCS load reads past the logical end of the frame. Validate that the frame contains both its control field and, when enabled, its FCS before either field is accessed.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 1c2acffb76d4bc5fd27c4ea55cc27ad8ead10f9a | affected | git | 4373ba79a267947e771c438507f7b103e30bdb21 | Unavailable | None listed |
| 1c2acffb76d4bc5fd27c4ea55cc27ad8ead10f9a | affected | git | 965bd88ed4b4763cb765dd65885adcfa588c6b14 | Unavailable | None listed |
| 1c2acffb76d4bc5fd27c4ea55cc27ad8ead10f9a | affected | git | 3acf6a0038ec0d4e8f4dcbfc2a557dff5f61cb70 | Unavailable | None listed |
| 1c2acffb76d4bc5fd27c4ea55cc27ad8ead10f9a | affected | git | 8c7556c7cd17e073bbefdc4a9a4694a207544c37 | Unavailable | None listed |
| 1c2acffb76d4bc5fd27c4ea55cc27ad8ead10f9a | affected | git | 1fdbb2a712a9a162ee817c959740face80b3d929 | Unavailable | None listed |
| 1c2acffb76d4bc5fd27c4ea55cc27ad8ead10f9a | affected | git | c6a288e6001bcce16553c3853e0f5a45eaaf85c7 | Unavailable | None listed |
| 1c2acffb76d4bc5fd27c4ea55cc27ad8ead10f9a | affected | git | f557274af7b94b6134692e6f26b880f1e34c15bf | Unavailable | None listed |
| 1c2acffb76d4bc5fd27c4ea55cc27ad8ead10f9a | affected | git | 6c78a213d9070b610c7f418af2c25b66180b7e37 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.32 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.32 | Unavailable | None listed |
| 5.10.271 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.222 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.158 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.112 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.55 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.9 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |