CVE-2023-0590: linux linux_kernel Use After Free

Modified

AliasesUBUNTU-CVE-2023-0590DEBIAN-CVE-2023-0590

Published 23-03-2023Last modified 14-10-2026

Vulnerability summary

CVE-2023-0590 is a medium (CVSS 4.7) Use After Free vulnerability in linux linux_kernel. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.5% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 4.7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

4.7/10

010

Medium · v3.1 (NVD)

EPSS score

0.23%

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 54 · Related 46

DLA-3710-1 RHSA-2023:2148 RHSA-2023:2458 RHSA-2023:5627 RHSA-2023:6901 RHSA-2023:7077+48 more

Timeline

23-03-2023
PublishedVulnerability first disclosed.
14-10-2026
Last modifiedVulnerability information updated.

Description

A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race problem. This flaw leads to a denial of service issue. If patch ebda44da44f6 ("net: sched: fix race condition in qdisc_graft()") not applied yet, then kernel could be affected.

CVSS metrics

4 scores · 3 sources · 2 versions

v4.07.3v3.14.7

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 0.20% 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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.

Ubuntu85 products

linuxAll versions (No fix recorded) | < 5.4.0-156.173 | < 5.15.0-60.66
linux-awsAll versions (No fix recorded) | < 5.4.0-1107.115 | < 5.15.0-1030.34
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< 5.15.0-1030.34~20.04.1
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1107.115~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fipsAll versions (No fix recorded) | < 5.4.0-1107.115+fips1
linux-aws-hweAll versions (No fix recorded)
linux-azureAll versions (No fix recorded) | < 5.4.0-1114.120 | < 5.15.0-1033.40
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< 5.15.0-1033.40~20.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1113.119~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1033.40.1
linux-azure-fipsAll versions (No fix recorded) | < 5.4.0-1113.119+fips1
linux-bluefield< 5.4.0-1068.74 | < 5.15.0-1014.16
linux-fipsAll versions (No fix recorded) | < 5.4.0-1082.91
linux-gcpAll versions (No fix recorded) | < 5.4.0-1110.119 | < 5.15.0-1029.36
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< 5.15.0-1029.36~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1110.119~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-fipsAll versions (No fix recorded) | < 5.4.0-1110.119+fips1
linux-gke< 5.4.0-1105.112 | < 5.15.0-1027.32
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15< 5.15.0-1027.32~20.04.1
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1074.78 | < 5.15.0-1015.19
linux-gkeop-5.15< 5.15.0-1015.19~20.04.1
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< 5.15.0-60.66~20.04.1
linux-hwe-5.19< 5.19.0-32.33~22.04.1
linux-hwe-5.4< 5.4.0-156.173~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1054.59 | < 5.15.0-1025.28
linux-ibm-5.4< 5.4.0-1054.59~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded)
linux-intel-iotg< 5.15.0-1025.30
linux-intel-iotg-5.15< 5.15.0-1025.30~20.04.1
linux-iot< 5.4.0-1019.20
linux-kvmAll versions (No fix recorded) | < 5.4.0-1096.102 | < 5.15.0-1028.33
linux-lowlatency< 5.15.0-60.66
linux-lowlatency-hwe-5.15< 5.15.0-60.66~20.04.1
linux-lts-xenialAll versions (No fix recorded)
linux-nvidia< 5.15.0-1017.17
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-6.0< 6.0.0-1008.8
linux-oracleAll versions (No fix recorded) | < 5.4.0-1106.115 | < 5.15.0-1029.35
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< 5.15.0-1029.35~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1106.115~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1091.102 | < 5.15.0-1024.26
linux-raspi-5.4< 5.4.0-1091.102~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded)
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1029.33~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-xilinx-zynqmp< 5.4.0-1027.31

Show all 85

Debian1 product

linux< 6.0.6-1

Linux1 product

linux_kernel< 6.1 | 6.1:rc1

3 vendors · 87 products

References

24 links

lore.kernel.org/all/20221018203258.2793282-1-edumazet%40google.com/
lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlMailing List
ubuntu.com/security/CVE-2023-0590REPORT
access.redhat.com/security/cve/CVE-2023-0590REPORT
git.kernel.org/pub/…REPORT
ubuntu.com/security/notices/USN-5850-1Advisory
ubuntu.com/security/notices/USN-5851-1Advisory
ubuntu.com/security/notices/USN-5860-1Advisory
ubuntu.com/security/notices/USN-5876-1Advisory
ubuntu.com/security/notices/USN-5877-1Advisory

Show all 24 references