CVE-2025-40173
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net/ip6_tunnel: Prevent perpetual tunnel growth
In the Linux kernel, the following vulnerability has been resolved: net/ip6_tunnel: Prevent perpetual tunnel growth Similarly to ipv4 tunnel, ipv6 version updates dev->needed_headroom, too. While ipv4 tunnel headroom adjustment growth was limited in commit 5ae1e9922bbd ("net: ip_tunnel: prevent perpetual headroom growth"), ipv6 tunnel yet increases the headroom without any ceiling. Reflect ipv4 tunnel headroom adjustment limit on ipv6 version. Credits to Francesco Ruggeri, who was originally debugging this issue and wrote local Arista-specific patch and a reproducer.
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) |
|---|---|---|---|---|---|
| 8eb30be0352d09165e94a41fef1c7b994dca0714 | affected | git | 566f8d5c8a443f2dd69c5460fdec43ed1c870c65 | Unavailable | None listed |
| 8eb30be0352d09165e94a41fef1c7b994dca0714 | affected | git | 11f6066af3bfb8149aa16c42c0b0c5ea5b199a94 | Unavailable | None listed |
| 8eb30be0352d09165e94a41fef1c7b994dca0714 | affected | git | 402b6985e872b4cf394bbbf33b503947a326a6cb | Unavailable | None listed |
| 8eb30be0352d09165e94a41fef1c7b994dca0714 | affected | git | 10fe967efe73c610e526ff7460581610633dee9c | Unavailable | None listed |
| 8eb30be0352d09165e94a41fef1c7b994dca0714 | affected | git | 48294a67863c9cfa367abb66bbf0ef6548ae124f | Unavailable | None listed |
| 8eb30be0352d09165e94a41fef1c7b994dca0714 | affected | git | eeb4345488672584db4f8c20a1ae13a212ce31c4 | Unavailable | None listed |
| 8eb30be0352d09165e94a41fef1c7b994dca0714 | affected | git | b6eb25d870f1a8ae571fd3da2244b71df547824b | Unavailable | None listed |
| 8eb30be0352d09165e94a41fef1c7b994dca0714 | affected | git | 21f4d45eba0b2dcae5dbc9e5e0ad08735c993f16 | 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) |
|---|---|---|---|---|---|
| 4.7 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.7 | Unavailable | None listed |
| 5.4.301 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.246 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.196 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.158 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.114 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.55 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.17.5 | unaffected | semver | Unavailable | 6.17.* | None listed |
| 6.18 | unaffected | original_commit_for_fix | Unavailable | * | None listed |