CVE-2024-44986: ipv6: fix possible UAF in ip6_finish_output2()

Modified

AliasesUBUNTU-CVE-2024-44986DEBIAN-CVE-2024-44986

Published 04-09-2024Last modified 29-09-2026

Vulnerability summary

CVE-2024-44986 is a high (CVSS 8.1) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53.4% of scored vulnerabilities.

Overall risk

33/100

0100

Medium · default modelHow is this calculated?

CVSS score

8.1/10

010

High · v3.1 (CVE.org)

EPSS score

0.72%

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 23 · Related 19

Timeline

04-09-2024
PublishedVulnerability first disclosed.
29-09-2026
Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in ip6_finish_output2() If skb_expand_head() returns NULL, skb has been freed and associated dst/idev could also have been freed. We need to hold rcu_read_lock() to make sure the dst and associated idev are alive.

CVSS metrics

4 scores · 4 sources · 1 version

v3.18.1

EPSS trend

Probability

0.72%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.71% on 22-09-2026

22-09-202622-10-2026

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

Ubuntu125 products

linuxAll versions (No fix recorded) | < 5.15.0-125.135 | < 6.8.0-50.51
linux-allwinner-5.19All versions (No fix recorded)
linux-awsAll versions (No fix recorded) | < 5.15.0-1072.78 | < 6.8.0-1020.22
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< 5.15.0-1072.78~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4All versions (No fix recorded)
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-6.8< 6.8.0-1020.22~22.04.1
linux-aws-fipsAll versions (No fix recorded) | < 5.15.0-1072.78+fips1
linux-azureAll versions (No fix recorded) | < 5.15.0-1075.84 | < 6.8.0-1020.23
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1078.87~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4All versions (No fix recorded)
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-6.8< 6.8.0-1020.23~22.04.1
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1076.85.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fipsAll versions (No fix recorded) | < 5.15.0-1075.84+fips1
linux-bluefieldAll versions (No fix recorded) | < 5.15.0-1056.58
linux-fipsAll versions (No fix recorded) | < 5.15.0-125.135+fips1 | < 6.8.0-78.78+fips1
linux-gcpAll versions (No fix recorded) | < 5.15.0-1071.79 | < 6.8.0-1019.21
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1071.79~20.04.1
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4All versions (No fix recorded)
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-6.8< 6.8.0-1019.21~22.04.1
linux-gcp-fipsAll versions (No fix recorded) | < 5.15.0-1071.79+fips1
linux-gkeAll versions (No fix recorded) | < 5.15.0-1069.75 | < 6.8.0-1015.19
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-gkeopAll versions (No fix recorded) | < 5.15.0-1055.62 | < 6.8.0-1002.4
linux-gkeop-5.15< 5.15.0-1055.62~20.04.1
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< 5.15.0-125.135~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4All versions (No fix recorded)
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-6.8< 6.8.0-50.51~22.04.1
linux-hwe-edgeAll versions (No fix recorded)
linux-ibmAll versions (No fix recorded) | < 5.15.0-1065.68 | < 6.8.0-1017.17
linux-ibm-5.15< 5.15.0-1065.68~20.04.1
linux-ibm-5.4All versions (No fix recorded)
linux-ibm-6.8< 6.8.0-1017.17~22.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1066.68
linux-intel-iotg< 5.15.0-1067.73
linux-intel-iotg-5.15< 5.15.0-1067.73~20.04.1
linux-iotAll versions (No fix recorded)
linux-kvmAll versions (No fix recorded) | < 5.15.0-1069.74
linux-lowlatency< 5.15.0-125.135 | < 6.8.0-50.51.1
linux-lowlatency-hwe-5.15< 5.15.0-125.135~20.04.1
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-lowlatency-hwe-6.8< 6.8.0-50.51.1~22.04.1
linux-nvidia< 5.15.0-1067.68 | < 6.8.0-1019.21
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-6.5All versions (No fix recorded)
linux-nvidia-6.8< 6.8.0-1019.21~22.04.1
linux-nvidia-lowlatency< 6.8.0-1019.21.1
linux-nvidia-tegra< 5.15.0-1032.32
linux-nvidia-tegra-5.15< 5.15.0-1032.32~20.04.1
linux-nvidia-tegra-igx< 5.15.0-1020.20
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-6.1All versions (No fix recorded)
linux-oem-6.5All versions (No fix recorded)
linux-oem-6.8< 6.8.0-1018.18
linux-oracleAll versions (No fix recorded) | < 5.15.0-1070.76 | < 6.8.0-1017.18
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< 5.15.0-1070.76~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4All versions (No fix recorded)
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.5All versions (No fix recorded)
linux-oracle-6.8< 6.8.0-1017.18~22.04.1
linux-raspiAll versions (No fix recorded) | < 5.15.0-1065.68 | < 6.8.0-1016.18
linux-raspi-5.4All versions (No fix recorded)
linux-raspi-realtime< 6.8.0-2015.16
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1073.81 | < 6.8.1-1013.14
linux-realtime-6.8< 6.8.1-1013.14~22.04.1
linux-riscvAll versions (No fix recorded) | < 6.8.0-50.51.1
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1068.72~20.04.1
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-riscv-6.8< 6.8.0-50.51.1~22.04.1
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< 6.8.0-1017.18
linux-xilinx-zynqmpAll versions (No fix recorded) | < 5.15.0-1038.42

Show all 125

Debian2 products

linux< 6.1.112-1 | < 6.10.7-1
debian_linuxEOL11.0

Linux2 products

linux≥ ded37d03440d0ab346a8287cc2ba88b8dc90ceb0, < ae8512e93f4ce47614ca89defaec1b93e00697b8 | ≥ 2323690eb05865a657709f4d28eb9538ea97bfc2, < 1504108cb6020df7b1a31c9bb80fd587470aa448 | ≥ 5796015fa968a3349027a27dcd04c71d95c53ba5, < e891b36de161fcd96f12ff83667473e5067b9037 | ≥ 5796015fa968a3349027a27dcd04c71d95c53ba5, < 3574d28caf9a09756ae87ad1ea096c6f47b6101e | ≥ 5796015fa968a3349027a27dcd04c71d95c53ba5, < 6ab6bf731354a6fdbaa617d1ec194960db61cf3b | ≥ 5796015fa968a3349027a27dcd04c71d95c53ba5, < 56efc253196751ece1fc535a5b582be127b0578a | ≥ 5796015fa968a3349027a27dcd04c71d95c53ba5, < da273b377ae0d9bd255281ed3c2adb228321687b | b34c668a867ffdcf8bd8db4a36512572e82b4a15 | ≥ 5.4.137, < 5.4.289 | ≥ 5.10.55, < 5.10.233 | ≥ 5.13.7, < 5.14 | 5.14
linux_kernel≥ 5.4.137, < 5.4.289 | ≥ 5.10.55, < 5.10.233 | ≥ 5.13.7, < 5.15.166 | ≥ 5.16, < 6.1.107 | ≥ 6.2, < 6.6.48 | ≥ 6.7, < 6.10.7 | 6.11:rc1 | 6.11:rc2 | 6.11:rc3 | 6.11:rc4

3 vendors · 129 products