In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_eui64: reject invalid MAC header for all packets `eui64_mt6()` derives a modified EUI-64 from the Ethernet source address and compares it with the low 64 bits of the IPv6 source address. The existing guard only rejects an invalid MAC header when `par->fragoff != 0`. For packets with `par->fragoff == 0`, `eui64_mt6()` can still reach `eth_hdr(skb)` even when the MAC header is not valid. Fix this by removing the `par->fragoff != 0` condition so that packets with an invalid MAC header are rejected before accessing `eth_hdr(skb)`.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | HIGH |
| Integrity Impact | LOW |
| Availability Impact | HIGH |
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Type: Secondary
Exploitability Score: 3.9
Impact Score: 5.5
| 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 0x7fd36ac4ab00> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36ac4bf40> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36b781b80> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd36043a500> | Operating System |
| linux | linux_kernel | 2.6.12 | <built-in method update of dict object at 0x7fd36ac48640> | Operating System |
| linux | linux_kernel | 2.6.12 | <built-in method update of dict object at 0x7fd3842b4080> | Operating System |
| linux | linux_kernel | 2.6.12 | <built-in method update of dict object at 0x7fd340cc7180> | Operating System |
| linux | linux_kernel | 2.6.12 | <built-in method update of dict object at 0x7fd340cc5e80> | Operating System |
| linux | linux_kernel | 2.6.12 | <built-in method update of dict object at 0x7fd384e2b6c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36ac4b5c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd2d3af5040> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36ac48500> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd368d859c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd2d825b880> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd340cc6a00> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd37039e4c0> | 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:2.6.12:-:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* |
| 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:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* |