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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | HIGH |
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Type: Secondary
Exploitability Score: 3.9
Impact Score: 3.6
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
NVD-CWE-noinfo
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d23a5984580> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d2450e64180> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d23a5985600> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d2364590080> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d23af2be9c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d24246c1dc0> | Operating System |
| linux | linux_kernel | 6.17 | <built-in method update of dict object at 0x7d23a5987900> | Operating System |
| linux | linux_kernel | 6.17 | <built-in method update of dict object at 0x7d242a84c580> | Operating System |
| linux | linux_kernel | 6.17 | <built-in method update of dict object at 0x7d242455cac0> | Operating System |
| linux | linux_kernel | 6.17 | <built-in method update of dict object at 0x7d23af2bf240> | Operating System |
| linux | linux_kernel | 6.17 | <built-in method update of dict object at 0x7d23a7f77fc0> | Operating System |
| linux | linux_kernel | 6.17 | <built-in method update of dict object at 0x7d23a5986b00> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d24245af2c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d23af281380> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d23bea7a340> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d24245373c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d242455f3c0> | Operating System |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.17:-:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:6.17:rc7:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* |