CVE-2023-6932: Use-after-free in Linux kernel's ipv4: igmp component

Modified

AliasesSUSE-SU-2024:0339-1SUSE-SU-2024:0347-1SUSE-SU-2024:0362-1+7 more

Published 19-12-2023Last modified 14-10-2026

Vulnerability summary

CVE-2023-6932 is a high (CVSS 7.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 30.6% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

7.8/10

010

High · v3.1 (CVE.org)

EPSS score

0.37%

0%100%

Low · 0.00 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 59 · Duplicates 1 · Related 45

DLA-3710-1 DLA-3711-1 DSA-5594-1 LSN-0100-1 LSN-0101-1 RHSA-2024:0723+54 more

Timeline

19-12-2023
PublishedVulnerability first disclosed.
14-10-2026
Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.

CVSS metrics

4 scores · 4 sources · 1 version

v3.17.8

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.37% 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-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected systems

Version check

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

Ubuntu114 products

linux< 4.4.0-250.284 | < 4.15.0-221.232 | < 5.4.0-170.188 | < 5.15.0-92.102 | < 3.13.0-195.246
linux-allwinner-5.19All versions (No fix recorded)
linux-aws< 4.4.0-1127.133 | < 4.4.0-1165.180 | < 4.15.0-1164.177 | < 5.4.0-1117.127 | < 5.15.0-1052.57
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< 5.15.0-1052.57~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1117.127~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.2< 6.2.0-1018.18~22.04.1
linux-aws-6.5< 6.5.0-1012.12~22.04.1
linux-aws-fips< 4.15.0-2103.109 | All versions (No fix recorded) | < 5.4.0-1117.127+fips1
linux-aws-hwe< 4.15.0-1164.177~16.04.1
linux-azure< 4.15.0-1173.188~14.04.1 | < 4.15.0-1173.188~16.04.1 | All versions (No fix recorded) | < 5.4.0-1122.129 | < 5.15.0-1054.62
linux-azure-4.15< 4.15.0-1173.188
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1054.62~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1122.129~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.2< 6.2.0-1019.19~22.04.1
linux-azure-6.5< 6.5.0-1011.11~22.04.1
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1054.62.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.2< 6.2.0-1019.19~22.04.1.1
linux-azure-fips< 4.15.0-2082.88 | All versions (No fix recorded) | < 5.4.0-1122.129+fips1
linux-bluefield< 5.4.0-1077.83 | < 5.15.0-1033.35
linux-fips< 4.4.0-1097.104 | All versions (No fix recorded) | < 4.15.0-1119.130 | < 5.4.0-1091.101
linux-gcp< 4.15.0-1158.175~16.04.1 | All versions (No fix recorded) | < 5.4.0-1121.130 | < 5.15.0-1049.57
linux-gcp-4.15< 4.15.0-1158.175
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1049.57~20.04.1
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1121.130~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.2< 6.2.0-1021.23~22.04.1
linux-gcp-6.5< 6.5.0-1011.11~22.04.1
linux-gcp-fips< 4.15.0-2066.71 | All versions (No fix recorded) | < 5.4.0-1121.130+fips1 | < 5.15.0-1055.63+fips2
linux-gkeAll versions (No fix recorded) | < 5.15.0-1049.54
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< 5.4.0-1084.88 | < 5.15.0-1035.41
linux-gkeop-5.15< 5.15.0-1035.41~20.04.1
linux-gkeop-5.4All versions (No fix recorded)
linux-hwe< 4.15.0-221.232~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-92.102~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4< 5.4.0-170.188~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-6.5< 6.5.0-15.15~22.04.1
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1064.69 | < 5.15.0-1045.48
linux-ibm-5.15< 5.15.0-1045.48~20.04.1
linux-ibm-5.4< 5.4.0-1064.69~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1046.48
linux-intel-iotg< 5.15.0-1047.53
linux-intel-iotg-5.15< 5.15.0-1048.54~20.04.1
linux-iot< 5.4.0-1029.30
linux-kvm< 4.4.0-1128.138 | < 4.15.0-1148.153 | < 5.4.0-1105.112 | < 5.15.0-1049.54
linux-lowlatency< 5.15.0-92.102
linux-lowlatency-hwe-5.15< 5.15.0-92.102~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lowlatency-hwe-6.5< 6.5.0-15.15.1.1~22.04.1
linux-lts-xenial< 4.4.0-250.284~14.04.1
linux-nvidia< 5.15.0-1043.43
linux-nvidia-6.2< 6.2.0-1015.15
linux-nvidia-6.5< 6.5.0-1014.14
linux-nvidia-tegra< 5.15.0-1021.21
linux-nvidia-tegra-5.15< 5.15.0-1022.22~20.04.1
linux-nvidia-tegra-igx< 5.15.0-1008.8
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< 6.1.0-1033.33
linux-oem-6.5< 6.5.0-1013.14
linux-oracle< 4.15.0-1127.138~16.04.1 | < 4.15.0-1127.138 | < 5.4.0-1116.125 | < 5.15.0-1050.56
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< 5.15.0-1050.56~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1116.125~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.5< 6.5.0-1014.14~22.04.1
linux-raspi< 5.4.0-1101.113 | < 5.15.0-1045.48 | < 6.7.0-1001.1
linux-raspi-5.4< 5.4.0-1101.113~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1053.59
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1048.52~20.04.1
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-xilinx-zynqmp< 5.4.0-1036.40 | < 5.15.0-1027.31

Show all 114

Suse11 products

kernel-livepatch-SLE15-SP1_Update_38&distro=SUSE Linux Enterprise Live Patching 15 SP1< 9-150100.2.1
kernel-livepatch-SLE15-SP1_Update_39&distro=SUSE Linux Enterprise Live Patching 15 SP1< 9-150100.2.1
kernel-livepatch-SLE15-SP1_Update_45&distro=SUSE Linux Enterprise Live Patching 15 SP1< 3-150100.2.1
kernel-livepatch-SLE15-SP4_Update_21&distro=SUSE Linux Enterprise Live Patching 15 SP4< 2-150400.2.1
kernel-livepatch-SLE15-SP4-RT_Update_16&distro=SUSE Linux Enterprise Live Patching 15 SP4< 2-150400.2.1

Show all 11

Debian2 products

linux< 6.1.66-1 | < 6.6.8-1
debian_linuxEOL10.0

Linux2 products

kernel≥ 2.6.12, < 6.7
linux_kernel< 4.14.332 | ≥ 4.15, < 4.19.301 | ≥ 4.20, < 5.4.263 | ≥ 5.5, < 5.10.203 | ≥ 5.11, < 5.15.142 | ≥ 5.16, < 6.1.66 | ≥ 6.2, < 6.6.5

4 vendors · 129 products