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CVE-2023-28466: debian debian_linux NULL Pointer Dereference

Modified
AliasesRHSA-2023:3819RHSA-2023:3847UBUNTU-CVE-2023-28466
Published 15-03-2023Last modified 05-05-2025

Vulnerability summary

CVE-2023-28466 is a high (CVSS 7.0) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 19.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.27%
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 56 · Related 48
DLA-3404-1MGASA-2023-0148MGASA-2023-0149RHSA-2023:3708RHSA-2023:3723RHSA-2023:4789

Timeline

  1. 15-03-2023
    PublishedVulnerability first disclosed.
  2. 05-05-2025
    Last modifiedVulnerability information updated.

Description

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.27% 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

Affected systems

Version check

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

Ubuntu97 products
  • linuxAll versions (No fix recorded) | < 5.4.0-156.173 | < 5.15.0-79.86
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1107.115 | < 5.15.0-1042.47
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Redhat49 products
  • bpftool< 0:4.18.0-477.15.1.el8_8
  • bpftool-debuginfo< 0:4.18.0-477.15.1.el8_8
  • kernel< 0:4.18.0-477.15.1.el8_8
  • kernel-abi-stablelists< 0:4.18.0-477.15.1.el8_8
  • kernel-core< 0:4.18.0-477.15.1.el8_8
Netapp5 products
Debian2 products
Linux1 product
  • linux_kernel≥ 4.13, ≤ 5.4.240 | ≥ 5.5, < 5.10.177 | ≥ 5.11, < 5.15.105 | ≥ 5.16, < 6.1.20 | ≥ 6.2, < 6.2.7

5 vendors · 154 products

References

28 links
Show all 28 references