CVEvulnerability

CVE-2023-53559

7.8 HIGH Published 2025-10-04 Modified 2026-08-04 Official page ↗
Status
Modified
Published
2025-10-04
Last modified
2026-08-04
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416

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.

Affected configurations

• linux linux kernel (>= 3.19.1 < 4.14.324) • linux linux kernel (>= 4.15 < 4.19.293) • linux linux kernel (>= 4.20 < 5.4.255) • linux linux kernel (>= 5.5 < 5.10.192) • linux linux kernel (>= 5.11 < 5.15.128) • linux linux kernel (>= 5.16 < 6.1.47) • linux linux kernel (>= 6.2 < 6.4.12) • linux linux kernel 3.19 • linux linux kernel 6.5

Related

Weakness · CWE (1)

References