In the Linux kernel, the following vulnerability has been resolved: eventpoll: defer struct eventpoll free to RCU grace period In certain situations, ep_free() in eventpoll.c will kfree the epi->ep eventpoll struct while it still being used by another concurrent thread. Defer the kfree() to an RCU callback to prevent UAF.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | LOCAL |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | HIGH |
| Integrity Impact | HIGH |
| Availability Impact | HIGH |
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Type: Secondary
Exploitability Score: 1.8
Impact Score: 5.9
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
CWE-401
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd2d82a3e80> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd308076bc0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd2d82a3940> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x7fd308074700> | Operating System |
| linux | linux_kernel | 6.4 | <built-in method update of dict object at 0x7fd308075740> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd349343880> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd319c77580> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd36b12dd00> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd308075bc0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd342601940> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd342601c40> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x7fd386769180> | 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:6.4:-:*:*:*:*:*:* |
| 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:*:*:*:*:*:* |