CVE-2023-35788

high

Description

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.

References

https://www.debian.org/security/2023/dsa-5480

https://www.debian.org/security/2023/dsa-5448

https://security.netapp.com/advisory/ntap-20230714-0002/

https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html

https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html

http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html

https://www.cisa.gov/news-events/ics-advisories/icsa-24-165-06

https://www.openwall.com/lists/oss-security/2023/06/07/1

https://git.kernel.org/linus/4d56304e5827c8cc8cc18c75343d283af7c4825c

https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-39785

https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.7

http://www.openwall.com/lists/oss-security/2023/06/17/1

Details

Source: Mitre, NVD

Published: 2023-06-16

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00527