In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: use netlink policy range checks Replace manual range and mask validations with netlink policy annotations in ctnetlink code paths, so that the netlink core rejects invalid values early and can generate extack errors. - CTA_PROTOINFO_TCP_STATE: reject values > TCP_CONNTRACK_SYN_SENT2 at policy level, removing the manual >= TCP_CONNTRACK_MAX check. - CTA_PROTOINFO_TCP_WSCALE_ORIGINAL/REPLY: reject values > TCP_MAX_WSCALE (14). The normal TCP option parsing path already clamps to this value, but the ctnetlink path accepted 0-255, causing undefined behavior when used as a u32 shift count. - CTA_FILTER_ORIG_FLAGS/REPLY_FLAGS: use NLA_POLICY_MASK with CTA_FILTER_F_ALL, removing the manual mask checks. - CTA_EXPECT_FLAGS: use NLA_POLICY_MASK with NF_CT_EXPECT_MASK, adding a new mask define grouping all valid expect flags. Extracted from a broader nf-next patch by Florian Westphal, scoped to ctnetlink for the fixes tree.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | LOCAL |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | HIGH |
| 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 0x702bcbbf5980> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdc389ec0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bde4f0fc0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdd4943c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bcbbf4c00> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bcbbf7600> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bde494ac0> | Operating System |
| linux | linux_kernel | 2.6.22 | <built-in method update of dict object at 0x702bde497700> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bcab45380> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bcbbf43c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bcab44dc0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bcbbf5a40> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bcbbf7180> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bcab44040> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bcbbf4440> | 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:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:2.6.22:-:*:*:*:*:*:* |
| 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:*:*:*:*:*:* |