Updated: 2025-11-03 02:44:02.718539
Description:
In the Linux kernel, the following vulnerability has been resolved: ip_vti: fix potential slab-use-after-free in decode_session6 When ip_vti device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when ip_vti device sends IPv6 packets. As commit f855691975bb ("xfrm6: Fix the nexthdr offset in _decode_session6.") showed, xfrm_decode_session was originally intended only for the receive path. IP6CB(skb)->nhoff is not set during transmission. Therefore, set the cb field in the skb to 0 before sending packets.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | NONE | 0.0 |
| CVSS Version 3.x | MEDIUM | 6.7 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 6.7 | MEDIUM | Released | CLSA-2025:1764151168 | 2025-11-27 10:33:27 | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 6.7 | MEDIUM | Ignored | 2025-11-05 05:01:28 | ||
| CentOS 8.5 ELS | kernel | 4.18.0 | 6.7 | MEDIUM | Ignored | 2025-11-05 05:01:30 |