CVE-2026-43057
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)
net: correctly handle tunneled traffic on IPV6_CSUM GSO fallback
In the Linux kernel, the following vulnerability has been resolved: net: correctly handle tunneled traffic on IPV6_CSUM GSO fallback NETIF_F_IPV6_CSUM only advertises support for checksum offload of packets without IPv6 extension headers. Packets with extension headers must fall back onto software checksumming. Since TSO depends on checksum offload, those must revert to GSO. The below commit introduces that fallback. It always checks network header length. For tunneled packets, the inner header length must be checked instead. Extend the check accordingly. A special case is tunneled packets without inner IP protocol. Such as RFC 6951 SCTP in UDP. Those are not standard IPv6 followed by transport header either, so also must revert to the software GSO path.
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) |
|---|---|---|---|---|---|
| a0478d7e888028f85fa7785ea838ce0ca09398e2 | affected | git | 2094a7cf91b71367b649f991aacc7b579f793d0b | Unavailable | None listed |
| 2156d9e9f2e483c8c3906c0ea57ea312c1424235 | affected | git | ed71cf465c75f5688b07a35d373cd1d6b589c8ea | Unavailable | None listed |
| 041e2f945f82fdbd6fff577b79c33469430297aa | affected | git | 33670f780e0120c3dacda188c512bbffe0b6044c | Unavailable | None listed |
| 864e3396976ef41de6cc7bc366276bf4e084fff2 | affected | git | a98b78116a27e2a57b696b569b2cb431c95cf9b6 | Unavailable | None listed |
| 864e3396976ef41de6cc7bc366276bf4e084fff2 | affected | git | 732fdeb2987c94b439d51f5cb9addddc2fc48c42 | Unavailable | None listed |
| 864e3396976ef41de6cc7bc366276bf4e084fff2 | affected | git | c4336a07eb6b2526dc2b62928b5104b41a7f81f5 | Unavailable | None listed |
| 794ddbb7b63b6828c75967b9bcd43b086716e7a1 | affected | git | Unavailable | Unavailable | None listed |
| 6.1.149 | affected | semver | 6.1.168 | Unavailable | None listed |
| 6.6.103 | affected | semver | 6.6.134 | Unavailable | None listed |
| 6.12.44 | affected | semver | 6.12.81 | Unavailable | None listed |
| 6.16.4 | affected | semver | 6.17 | 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) |
|---|---|---|---|---|---|
| 6.17 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.17 | Unavailable | None listed |
| 6.1.168 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.134 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.81 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.22 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.12 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |