CVE-2023-23455

medium

Description

atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

References

https://www.openwall.com/lists/oss-security/2023/01/10/4

https://www.openwall.com/lists/oss-security/2023/01/10/1

https://www.debian.org/security/2023/dsa-5324

https://www.cisa.gov/news-events/ics-advisories/icsa-25-044-09

https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html

https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a2965c7be0522eaa18808684b7b82b248515511b

https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-27555

https://cert-portal.siemens.com/productcert/html/ssa-794697.html

https://cert-portal.siemens.com/productcert/html/ssa-769027.html

Details

Source: Mitre, NVD

Published: 2023-01-12

Updated: 2026-10-14

Risk Information

CVSS v2

Base Score: 4.6

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

Severity: Medium

CVSS v3

Base Score: 5.5

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

Severity: Medium

EPSS

EPSS: 0.00284