7.5

CVE-2023-52454: linux NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2023-52454DEBIAN-CVE-2023-52454
Published 23-02-2024Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2023-52454 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.3% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.68%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 24 · Related 26
DLA-3841-1SUSE-SU-2024:1320-1SUSE-SU-2024:1321-1SUSE-SU-2024:1454-1SUSE-SU-2024:1465-1SUSE-SU-2024:1466-1

Timeline

  1. 23-02-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length If the host sends an H2CData command with an invalid DATAL, the kernel may crash in nvmet_tcp_build_pdu_iovec(). Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp] Call trace: process_one_work+0x174/0x3c8 worker_thread+0x2d0/0x3e8 kthread+0x104/0x110 Fix the bug by raising a fatal error if DATAL isn't coherent with the packet size. Also, the PDU length should never exceed the MAXH2CDATA parameter which has been communicated to the host in nvmet_tcp_handle_icreq().

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.68%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

0.00 pp

From 0.68% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.68%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu112 products
  • linux< 5.4.0-176.196 | < 5.15.0-102.112
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1122.132 | < 5.15.0-1057.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 872d26a391da92ed8f0c0f5cb5fef428067b7f30, < ee5e7632e981673f42a50ade25e71e612e543d9d | ≥ 872d26a391da92ed8f0c0f5cb5fef428067b7f30, < f775f2621c2ac5cc3a0b3a64665dad4fb146e510 | ≥ 872d26a391da92ed8f0c0f5cb5fef428067b7f30, < 4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d | ≥ 872d26a391da92ed8f0c0f5cb5fef428067b7f30, < 2871aa407007f6f531fae181ad252486e022df42 | ≥ 872d26a391da92ed8f0c0f5cb5fef428067b7f30, < 24e05760186dc070d3db190ca61efdbce23afc88 | ≥ 872d26a391da92ed8f0c0f5cb5fef428067b7f30, < 70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68 | ≥ 872d26a391da92ed8f0c0f5cb5fef428067b7f30, < efa56305908ba20de2104f1b8508c6a7401833be | 5.0
  • linux_kernel≥ 5.0.0, < 5.4.268 | ≥ 5.5.0, < 5.10.209 | ≥ 5.11.0, < 5.15.148 | ≥ 5.16.0, < 6.1.75 | ≥ 6.2.0, < 6.6.14 | ≥ 6.7.0, < 6.7.2
Debian1 product
  • linux< 6.1.76-1 | < 6.6.15-1

3 vendors · 115 products

References

25 links
Show all 25 references