CVE-2023-5197: Use-after-free in Linux kernel's netfilter: nf_tables component

Modified

AliasesUBUNTU-CVE-2023-5197DEBIAN-CVE-2023-5197

Published 26-09-2023Last modified 02-11-2026

Vulnerability summary

CVE-2023-5197 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 30.8% 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 21 · Related 20

Timeline

26-09-2023
PublishedVulnerability first disclosed.
02-11-2026
Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Addition and removal of rules from chain bindings within the same transaction causes leads to use-after-free. We recommend upgrading past commit f15f29fd4779be8a418b66e9d52979bb6d6c2325.

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

Ubuntu93 products

linux< 5.15.0-87.97
linux-allwinner-5.19All versions (No fix recorded)
linux-aws< 5.15.0-1048.53
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< 5.15.0-1048.53~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.2< 6.2.0-1014.14~22.04.1
linux-aws-6.5< 6.5.0-1010.10~22.04.1
linux-azureAll versions (No fix recorded) | < 5.15.0-1050.57
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1050.57~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.2< 6.2.0-1015.15~22.04.1
linux-azure-6.5< 6.5.0-1009.9~22.04.1
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1050.57.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-bluefield< 5.15.0-1028.30
linux-fipsAll versions (No fix recorded)
linux-gcpAll versions (No fix recorded) | < 5.15.0-1045.53
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1045.53~20.04.2
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.2< 6.2.0-1017.19~22.04.1
linux-gkeAll versions (No fix recorded) | < 5.15.0-1045.50
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< 5.15.0-1031.37
linux-gkeop-5.15< 5.15.0-1031.37~20.04.1
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< 5.15.0-87.97~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.2< 6.2.0-35.35~22.04.1
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.15.0-1041.44
linux-ibm-5.15< 5.15.0-1041.44~20.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1041.43
linux-intel-iotg< 5.15.0-1043.49
linux-intel-iotg-5.15< 5.15.0-1043.49~20.04.1
linux-kvm< 5.15.0-1045.50
linux-lowlatency< 5.15.0-87.96
linux-lowlatency-hwe-5.15< 5.15.0-87.96~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.2< 6.2.0-1015.15~22.04.1
linux-nvidia< 5.15.0-1039.39
linux-nvidia-6.2< 6.2.0-1011.11
linux-nvidia-tegra< 5.15.0-1019.19
linux-nvidia-tegra-5.15< 5.15.0-1019.19~20.04.1
linux-nvidia-tegra-igx< 5.15.0-1006.6
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< 6.1.0-1024.24
linux-oem-6.5< 6.5.0-1007.7
linux-oracle< 5.15.0-1046.52
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< 5.15.0-1046.52~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.15.0-1041.44 | < 6.7.0-1001.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1049.55
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1044.48~20.04.1
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-6.2< 6.2.0-1007.8~22.04.1
linux-xilinx-zynqmp< 5.15.0-1025.29

Show all 93

Debian2 products

linux< 6.1.64-1 | < 6.5.6-1
debian_linuxEOL10.0

Linux2 products

kernel≥ 5.9, < 6.6
linux_kernel≥ 5.9.0, < 5.10.198 | ≥ 5.11, < 5.15.134 | ≥ 5.16, < 6.1.56 | ≥ 6.2, < 6.5.6

3 vendors · 97 products

References

23 links

git.kernel.org/pub/…PatchREPORT
kernel.dance/f15f29fd4779be8a418b66e9d52979bb6d6c2325PatchVendor Advisory
packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.htmlThird Party Advisory
lists.debian.org/debian-lts-announce/2024/01/msg00005.htmlMailing ListThird Party Advisory
ubuntu.com/security/CVE-2023-5197REPORT
ubuntu.com/security/notices/USN-6443-1Advisory
ubuntu.com/security/notices/USN-6444-1Advisory
ubuntu.com/security/notices/USN-6445-1Advisory
ubuntu.com/security/notices/USN-6446-1Advisory
ubuntu.com/security/notices/USN-6444-2Advisory

Show all 23 references

ubuntu.com/security/notices/USN-6445-2Advisory
ubuntu.com/security/notices/USN-6446-2Advisory
ubuntu.com/security/notices/USN-6446-3Advisory
ubuntu.com/security/notices/USN-6454-1Advisory
ubuntu.com/security/notices/USN-6454-2Advisory
ubuntu.com/security/notices/USN-6466-1Advisory
ubuntu.com/security/notices/USN-6454-3Advisory
ubuntu.com/security/notices/USN-6454-4Advisory
ubuntu.com/security/notices/USN-6479-1Advisory
www.cve.org/CVERecord?id=CVE-2023-5197REPORT
security-tracker.debian.org/tracker/CVE-2023-5197Advisory
nvd.nist.gov/vuln/detail/CVE-2023-5197OvalAdvisory
cert-portal.siemens.com/productcert/html/ssa-794697.html