CVE-2026-89562
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)
ip6_gre: fix hardware header length for NBMA tunnels
In the Linux kernel, the following vulnerability has been resolved: ip6_gre: fix hardware header length for NBMA tunnels ip6gre_tnl_link_config_route() accumulates the lower device's hardware header length into dev->hard_header_len whenever header_ops is set. This is incorrect for both users of header_ops. ip6gretap and ip6erspan have a fixed Ethernet hardware header length. For an NBMA ip6gre tunnel, ip6gre_header() creates only the GRE header, the optional FOU or GUE header, and the outer IPv6 header. The lower device header is headroom needed later, not part of the tunnel device's hardware header. Keep the lower device header in needed_headroom. Set hard_header_len to the tunnel header length only for ARPHRD_IP6GRE devices with header_ops, and leave the fixed Ethernet header length unchanged for tap and erspan devices.
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) |
|---|---|---|---|---|---|
| 832ba596494b2c9eac7760259eff2d8b7dcad0ee | affected | git | cb1afd087aedc90e5274537e4fb9bf3f98e5afdb | Unavailable | None listed |
| 832ba596494b2c9eac7760259eff2d8b7dcad0ee | affected | git | 7719f6e7ed2ffddc2c3bb61f4467b76d49e0af6a | Unavailable | None listed |
| 832ba596494b2c9eac7760259eff2d8b7dcad0ee | affected | git | b1e95e3602d8e112458627f14c6c31c21f2188cb | Unavailable | None listed |
| 832ba596494b2c9eac7760259eff2d8b7dcad0ee | affected | git | c3457a5aae5fb43f7023d3f3dc472c2afa22acf0 | Unavailable | None listed |
| 832ba596494b2c9eac7760259eff2d8b7dcad0ee | affected | git | 8bfe746afee38dd6e4348ddcd22d554789dbb9ff | Unavailable | None listed |
| 832ba596494b2c9eac7760259eff2d8b7dcad0ee | affected | git | b8282668d8fa7c61b80e8e4890729031c291a16c | Unavailable | None listed |
| 832ba596494b2c9eac7760259eff2d8b7dcad0ee | affected | git | 565038b0092f65afe384961c0f548d605bf438b9 | Unavailable | None listed |
| 832ba596494b2c9eac7760259eff2d8b7dcad0ee | affected | git | 505b6d296c486ef7d1274f279d4c43a172f63224 | Unavailable | None listed |
| cf3d9717a5271573fa193c4dfa0df856295d5b15 | affected | git | Unavailable | Unavailable | None listed |
| 187a6daf5db45adc807c85bbe285319107bed198 | affected | git | Unavailable | Unavailable | None listed |
| d9897bb66ce989325b4bf4cdbb6a799e4ac878b6 | affected | git | Unavailable | Unavailable | None listed |
| 4.19.162 | affected | semver | 4.20 | Unavailable | None listed |
| 5.4.82 | affected | semver | 5.5 | Unavailable | None listed |
| 5.9.13 | affected | semver | 5.10 | 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) |
|---|---|---|---|---|---|
| 5.10 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.10 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |