An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAP_NET_ADMIN capability in an unprivileged namespace. NOTE: cc00bca was reverted in 5.12.
References
| Link | Resource |
|---|---|
| https://syzkaller.appspot.com/bug?id=0c4fd9c6aa04ec116d01e915d3b186f71a212cb2 | Exploit Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc00bcaa589914096edef7fb87ca5cee4a166b5c | Mailing List Patch |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12 | Release Notes |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10 | Release Notes |
Configurations
History
26 May 2023, 03:35
| Type | Values Removed | Values Added |
|---|---|---|
| References | (MISC) https://syzkaller.appspot.com/bug?id=0c4fd9c6aa04ec116d01e915d3b186f71a212cb2 - Exploit, Third Party Advisory | |
| References | (MISC) https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12 - Release Notes | |
| References | (MISC) https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc00bcaa589914096edef7fb87ca5cee4a166b5c - Mailing List, Patch | |
| References | (MISC) https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10 - Release Notes | |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-416 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.8 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
21 May 2023, 23:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2023-05-21 23:15
Updated : 2023-05-26 03:35
NVD link : CVE-2020-36694
Mitre link : CVE-2020-36694
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free