In the Linux kernel, the following vulnerability has been resolved: net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak When building netlink messages, tc_chain_fill_node() never initializes the tcm_info field of struct tcmsg. Since the allocation is not zeroed, kernel heap memory is leaked to userspace through this 4-byte field. The fix simply zeroes tcm_info alongside the other fields that are already initialized.
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
CWE-908
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d24603137c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d2357b4e300> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d2357b4db00> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d24243dc080> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d242a706c80> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d242438adc0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7d2357b4f2c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d2357b4e100> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d23be9fd0c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d242456e8c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d23bea37dc0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d2357b4d000> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7d2424786a80> | 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: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:*:*:*:*:*:* |