CVE-2026-68299
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)
vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets
In the Linux kernel, the following vulnerability has been resolved: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets vmxnet3_get_hdr_len() assumes gdesc->rcd.v4/v6/tcp always describe the outer header, but for a Geneve-encapsulated packet the device can set them based on the inner header instead, signalled by the VMXNET3_RCD_HDR_INNER_SHIFT bit in the completion descriptor. Since the function never skips the outer encapsulation, this mismatch triggers: - BUG_ON(hdr.ipv4->protocol != IPPROTO_TCP), because the outer protocol is UDP (Geneve), not TCP. - BUG_ON(hdr.eth->h_proto != ...), when the tunnel's outer and inner IP versions differ (e.g. outer IPv6/inner IPv4 or vice versa). Check VMXNET3_RCD_HDR_INNER_SHIFT up front and bail out, since the function cannot locate the inner header it would need to parse. Also convert the remaining BUG_ON()s in this function to return 0 defensively.
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) |
|---|---|---|---|---|---|
| 45dac1d6ea045ae56e4df8d9c70c92c7412bd4fc | affected | git | 2ddf51fcb6dd7d55ceef38e2e1a5ab2ab7fd47b0 | Unavailable | None listed |
| 45dac1d6ea045ae56e4df8d9c70c92c7412bd4fc | affected | git | fbab6b73cc086e32698c86e43d1b16bf17d24c36 | Unavailable | None listed |
| 45dac1d6ea045ae56e4df8d9c70c92c7412bd4fc | affected | git | 28e382646417c7e2be9c9a7079eddf627ff52b90 | Unavailable | None listed |
| 45dac1d6ea045ae56e4df8d9c70c92c7412bd4fc | affected | git | 667b6e52048eaf4dbcf1707ed87ffd44abb9cb38 | Unavailable | None listed |
| 45dac1d6ea045ae56e4df8d9c70c92c7412bd4fc | affected | git | 28cb5d8d13b4c1faf3f688f62e5df82fe7b438d8 | Unavailable | None listed |
| 45dac1d6ea045ae56e4df8d9c70c92c7412bd4fc | affected | git | 4fdb0f162ccdbe9626863b10003855703253fa29 | Unavailable | None listed |
| 45dac1d6ea045ae56e4df8d9c70c92c7412bd4fc | affected | git | b28596baf87e25a078789f1c05817c8a3bf71257 | Unavailable | None listed |
| 45dac1d6ea045ae56e4df8d9c70c92c7412bd4fc | affected | git | 34a71f5361fc3adb5b7138da78750b0d535a8252 | 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) |
|---|---|---|---|---|---|
| 4.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.2 | Unavailable | None listed |
| 5.10.265 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.216 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.183 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.148 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.101 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.42 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.6 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |