发布时间: 2024年5月17日
修改时间: 2024年6月13日
In the Linux kernel, the following vulnerability has been resolved: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built from a non-linear skb we get the following splat, BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240 Read of size 4 at addr ffff88811d402c80 by task netperf/820 CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543 ... kasan_report+0xd8/0x110 do_csum+0x220/0x240 csum_partial+0xc/0x20 skb_tunnel_check_pmtu+0xeb9/0x3280 vxlan_xmit_one+0x14c2/0x4080 vxlan_xmit+0xf61/0x5c00 dev_hard_start_xmit+0xfb/0x510 __dev_queue_xmit+0x7cd/0x32a0 br_dev_queue_push_xmit+0x39d/0x6a0 Use skb_checksum instead of csum_partial who cannot deal with non-linear SKBs.
| NVD | openEuler | |
|---|---|---|
| CVSS评分 | 5.5 | |
| Attack Vector | Local | |
| Attack Complexity | Low | |
| Privileges Required | Low | |
| User Interaction | None | |
| Scope | Unchanged | |
| Confidentiality | None | |
| Integrity | None | |
| Availability | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-4953 | kernel security update | 2024年5月24日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | kernel | Unaffected |
| KY3.4-5A | kernel | Unaffected |
| KY3.5.1 | kernel | Fixed |
| KY3.5.2 | kernel | Fixed |
| V6 | kernel | Unaffected |
