CVE-2026-53221
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_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
In the Linux kernel, the following vulnerability has been resolved: ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup() In vti6_tnl_lookup(), when an exact match for a tunnel fails, the code falls back to searching for wildcard tunnels: - Tunnels matching the packet's local address, with any remote address wildcard remote). - Tunnels matching the packet's remote address, with any local address (wildcard local). However, vti6 stores all these different types of tunnels in the same hash table (ip6n->tnls_r_l) prone to hash collisions. The bug is that the fallback search loops in vti6_tnl_lookup() were missing checks to ensure that the candidate tunnel actually has a wildcard address.
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) |
|---|---|---|---|---|---|
| fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 | affected | git | c327fa4fca31415431202e063767a7ae342e19c6 | Unavailable | None listed |
| fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 | affected | git | fc657ac0767c49839b3ef0b08dc0953ca30883f8 | Unavailable | None listed |
| fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 | affected | git | 47fb3c2b4203556308e64354b3e78f2ce221d646 | Unavailable | None listed |
| fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 | affected | git | f513f308cc4bdb4530d033431592ffbc29b7fca1 | Unavailable | None listed |
| fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 | affected | git | 90fd4513315ca07da99cfd8549d3e553a7160f0d | Unavailable | None listed |
| fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 | affected | git | 2abfb19bbb81958714ad1d43ebeb65b30394184b | Unavailable | None listed |
| fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 | affected | git | 2fc7bc087cc7085368263d9d37bfe9a0bddd6a2d | Unavailable | None listed |
| fbe68ee87522f6eaa10f9076c0a7117e1613f2f7 | affected | git | a5c0359f5cbc51a2e2b114d6041e0f3c73f903e9 | 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) |
|---|---|---|---|---|---|
| 3.19 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.19 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.94 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.36 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.13 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |