CVE-2026-63992
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)
tunnels: do not assume transport header in iptunnel_pmtud_check_icmp()
In the Linux kernel, the following vulnerability has been resolved: tunnels: do not assume transport header in iptunnel_pmtud_check_icmp() In some cases, iptunnel_pmtud_check_icmp() can be called while skb transport header is not set. This triggers an out-of-bound access, because (typeof(skb->transport_header))~0U is 65535. Access the icmp header based on IPv4 network header, after making sure icmp->type is present in skb linear part. Note that iptunnel_pmtud_check_icmpv6()) is fine.
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) |
|---|---|---|---|---|---|
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 5a92cb45e34749865d03daf8d3500f77b5f6644c | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | c7b7ec3e69e673c0d6b57f74d21da50c485c598e | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 7f4f7efe7f30edd29c4988de01728bf2398217e4 | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | e917d0c69f01af2bb4fbea2b66d560a53b3ac7ec | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | a096b6e34f602950af9a2b0856cd93a5f4c276d7 | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 43368636c663cff6e59dde93cf4b8e43ac28eb93 | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | cb549df9ce4ee15c9d5b19ddab12cf2128e4313c | Unavailable | None listed |
| 4cb47a8644cc9eb8ec81190a50e79e6530d0297f | affected | git | 509323077ef79a26ba0c60bb556e45c12c398b2d | 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) |
|---|---|---|---|---|---|
| 5.9 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.9 | 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 |
| 6.12.93 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.35 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |