CVE-2023-6915: Kernel: null pointer dereference vulnerability in ida_free in lib/idr.c

Analyzed

AliasesUBUNTU-CVE-2023-6915USN-6650-1DEBIAN-CVE-2023-6915

Published 15-01-2024Last modified 06-11-2025

Vulnerability summary

CVE-2023-6915 is a medium (CVSS 6.2) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20.2% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 6.2, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

6.2/10

010

Medium · v3.1 (CVE.org)

EPSS score

0.28%

0%100%

Low · +0.02 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 22 · Related 19

Timeline

15-01-2024
PublishedVulnerability first disclosed.
06-11-2025
Last modifiedVulnerability information updated.

Description

A Null pointer dereference problem was found in ida_free in lib/idr.c in the Linux Kernel. This issue may allow an attacker using this library to cause a denial of service problem due to a missing check at a function return.

CVSS metrics

4 scores · 4 sources · 1 version

v3.16.2

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.26% 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-476NULL Pointer DereferenceThe product dereferences a pointer that it expects to be valid but is NULL.

Affected systems

Version check

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

Ubuntu112 products

linuxAll versions (No fix recorded) | < 5.4.0-172.190 | < 5.15.0-97.107
linux-allwinner-5.19All versions (No fix recorded)
linux-aws< 5.4.0-1119.129 | < 5.15.0-1055.60
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< 5.15.0-1055.60~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1119.129~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.2All versions (No fix recorded)
linux-aws-6.5All versions (No fix recorded)
linux-aws-fips< 5.4.0-1119.129+fips1 | All versions (No fix recorded) | < 5.15.0-1055.60+fips1
linux-azureAll versions (No fix recorded) | < 5.4.0-1124.131 | < 5.15.0-1057.65
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1057.65~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1124.131~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.2All versions (No fix recorded)
linux-azure-6.5All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1057.65.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fips< 5.4.0-1124.131+fips1 | All versions (No fix recorded)
linux-bluefield< 5.4.0-1079.85 | < 5.15.0-1036.38
linux-fipsAll versions (No fix recorded) | < 5.15.0-97.107+fips1
linux-gcpAll versions (No fix recorded) | < 5.4.0-1123.132 | < 5.15.0-1052.60
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1052.60~20.04.1
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1123.132~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.2All versions (No fix recorded)
linux-gcp-6.5All versions (No fix recorded)
linux-gcp-fipsAll versions (No fix recorded) | < 5.15.0-1055.63+fips2
linux-gkeAll versions (No fix recorded) | < 5.15.0-1051.56
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15All versions (No fix recorded)
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1086.90 | < 5.15.0-1037.43
linux-gkeop-5.15< 5.15.0-1037.43~20.04.1
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< 5.15.0-97.107~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4< 5.4.0-172.190~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-6.5All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1066.71 | < 5.15.0-1047.50
linux-ibm-5.15< 5.15.0-1047.50~20.04.1
linux-ibm-5.4< 5.4.0-1066.71~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1047.49
linux-intel-iotg< 5.15.0-1049.55
linux-intel-iotg-5.15< 5.15.0-1049.55~20.04.1
linux-iot< 5.4.0-1031.32
linux-kvm< 5.4.0-1107.114 | < 5.15.0-1051.56
linux-lowlatency< 5.15.0-97.107
linux-lowlatency-hwe-5.15< 5.15.0-97.107~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lowlatency-hwe-6.5All versions (No fix recorded)
linux-nvidia< 5.15.0-1045.45
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-6.5< 6.5.0-1014.14
linux-nvidia-tegra< 5.15.0-1022.22
linux-nvidia-tegra-5.15< 5.15.0-1022.22~20.04.1
linux-nvidia-tegra-igx< 5.15.0-1009.9
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< 6.1.0-1034.34
linux-oem-6.5All versions (No fix recorded)
linux-oracle< 5.4.0-1118.127 | < 5.15.0-1052.58
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< 5.15.0-1052.58~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1118.127~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.5All versions (No fix recorded)
linux-raspi< 5.4.0-1103.115 | < 5.15.0-1047.50 | < 6.7.0-1001.1
linux-raspi-5.4< 5.4.0-1103.115~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1055.62
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1050.54~20.04.1
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-riscv-6.5All versions (No fix recorded)
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-starfive-6.5All versions (No fix recorded)
linux-xilinx-zynqmp< 5.4.0-1038.42 | < 5.15.0-1030.34