CVE-2023-23454: debian debian_linux

Modified

AliasesSUSE-SU-2023:2367-1SUSE-SU-2023:2385-1SUSE-SU-2023:2413-1+4 more

Published 12-01-2023Last modified 14-10-2026

Vulnerability summary

CVE-2023-23454 is a medium (CVSS 5.5) vulnerability in debian debian_linux. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 27.8% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

5.5/10

010

Medium · v3.1 (CVE.org)

EPSS score

0.34%

0%100%

Low · +0.03 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 65 · Related 57

DLA-3349-1 DLA-3403-1 DSA-5324-1 MGASA-2023-0007 MGASA-2023-0008 RHSA-2023:2736+59 more

Timeline

12-01-2023
PublishedVulnerability first disclosed.
14-10-2026
Last modifiedVulnerability information updated.

Description

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

CVSS metrics

5 scores · 4 sources · 2 versions

v4.06.8v3.15.5

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 0.31% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-843Access of Resource Using Incompatible TypeThe product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu89 products

linuxAll versions (No fix recorded) | < 5.4.0-144.161 | < 5.15.0-69.76
linux-awsAll versions (No fix recorded) | < 5.4.0-1097.105 | < 5.15.0-1033.37
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)
linux-aws-5.13All versions (No fix recorded)

linux-aws-5.15< 5.15.0-1033.37~20.04.1
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1097.105~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fipsAll versions (No fix recorded) | < 5.4.0-1099.107+fips1
linux-aws-hweAll versions (No fix recorded)
linux-azureAll versions (No fix recorded) | < 5.4.0-1104.110 | < 5.15.0-1035.42
linux-azure-4.15All versions (No fix recorded)
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1035.42~20.04.1
linux-azure-5.19< 5.19.0-1026.29~22.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1104.110~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fde< 5.15.0-1035.42.1
linux-azure-fipsAll versions (No fix recorded) | < 5.4.0-1104.110+fips1
linux-bluefield< 5.4.0-1059.65 | < 5.15.0-1015.17
linux-fipsAll versions (No fix recorded) | < 5.4.0-1073.82
linux-gcpAll versions (No fix recorded) | < 5.4.0-1101.110 | < 5.15.0-1031.38
linux-gcp-4.15All versions (No fix recorded)
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1031.38~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1101.110~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-fipsAll versions (No fix recorded) | < 5.4.0-1101.110+fips1
linux-gke< 5.4.0-1095.102 | < 5.15.0-1030.35
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15< 5.15.0-1029.34~20.04.1
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1065.69 | < 5.15.0-1017.22
linux-gkeop-5.15< 5.15.0-1017.22~20.04.1
linux-gkeop-5.4All versions (No fix recorded)
linux-hweAll versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-69.76~20.04.1
linux-hwe-5.19< 5.19.0-42.43~22.04.1
linux-hwe-5.4< 5.4.0-144.161~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1045.50 | < 5.15.0-1027.30
linux-ibm-5.4< 5.4.0-1045.50~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1023.28
linux-intel-iotg< 5.15.0-1027.32
linux-intel-iotg-5.15< 5.15.0-1027.32~20.04.1
linux-iot< 5.4.0-1013.15
linux-kvmAll versions (No fix recorded) | < 5.4.0-1087.93 | < 5.15.0-1030.35
linux-lowlatency< 5.15.0-69.76
linux-lowlatency-hwe-5.15< 5.15.0-69.76~20.04.1
linux-lowlatency-hwe-5.19< 5.19.0-1024.25~22.04.1
linux-lts-xenialAll versions (No fix recorded)
linux-nvidia< 5.15.0-1023.23
linux-nvidia-tegra-5.15< 5.15.0-1014.14~20.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oem-6.1< 6.1.0-1007.7
linux-oracleAll versions (No fix recorded) | < 5.4.0-1094.103 | < 5.15.0-1032.38
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1032.38~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1094.103~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1081.92 | < 5.15.0-1026.28
linux-raspi-5.4< 5.4.0-1081.92~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1034.37
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1030.34~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-xilinx-zynqmp< 5.4.0-1022.26

Show all 89

Suse5 products

kernel-livepatch-SLE15-SP1_Update_40&distro=SUSE Linux Enterprise Live Patching 15 SP1< 2-150100.2.2
kernel-livepatch-SLE15-SP2_Update_36&distro=SUSE Linux Enterprise Live Patching 15 SP2< 2-150200.2.3
kernel-livepatch-SLE15-SP3_Update_32&distro=SUSE Linux Enterprise Live Patching 15 SP3< 2-150300.2.3
kernel-livepatch-SLE15-SP4_Update_12&distro=SUSE Linux Enterprise Live Patching 15 SP4< 2-150400.2.3
kernel-livepatch-SLE15-SP4-RT_Update_7&distro=SUSE Linux Enterprise Live Patching 15 SP4< 2-150400.2.2

Debian2 products

linux< 6.1.7-1
debian_linuxEOL11.0

Linux1 product

linux_kernel≥ 2.6.12, ≤ 6.1.4

4 vendors · 97 products

References

34 links

www.openwall.com/lists/oss-security/2023/01/10/1REPORTMailing ListThird Party Advisory
www.openwall.com/lists/oss-security/2023/01/10/4REPORTMailing ListThird Party Advisory
git.kernel.org/pub/…REPORTPatchVendor Advisory
www.debian.org/security/2023/dsa-5324Vendor AdvisoryThird Party Advisory
lists.debian.org/debian-lts-announce/2023/03/msg00000.htmlMailing List
lists.debian.org/debian-lts-announce/2023/05/msg00006.htmlMailing List
www.suse.com/support/update/announcement/2023/suse-su-20232367-1/Advisory
bugzilla.suse.com/1207188REPORT
www.suse.com/security/cve/CVE-2023-23454WEB
www.suse.com/support/update/announcement/2023/suse-su-20232385-1/Advisory

Show all 34 references