5.5

CVE-2023-53464: scsi: iscsi_tcp: Check that sock is valid before iscsi_set_param()

Analyzed
AliasesUBUNTU-CVE-2023-53464DEBIAN-CVE-2023-53464
Published 01-10-2025Last modified 23-05-2026

Vulnerability summary

CVE-2023-53464 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.17%
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 8 · Related 7
RHSA-2023:6583SUSE-SU-2025:03613-1SUSE-SU-2025:03615-1SUSE-SU-2025:03626-1SUSE-SU-2025:03628-1SUSE-SU-2025:3716-1

Timeline

  1. 01-10-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi_tcp: Check that sock is valid before iscsi_set_param() The validity of sock should be checked before assignment to avoid incorrect values. Commit 57569c37f0ad ("scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername()") introduced this change which may lead to inconsistent values of tcp_sw_conn->sendpage and conn->datadgst_en. Fix the issue by moving the position of the assignment.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% 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.

Ubuntu108 products
  • linux< 5.15.0-79.86
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1042.47
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 884a788f065578bb640382279a83d1df433b13e6, < 499757ad3332e2527254f9ab68dec1da087b1d96 | ≥ a26b0658751bb0a3b28386fca715333b104d32a2, < 5e5c5f472972c4bc9430adc08b36763a0fa5b9f7 | ≥ 57569c37f0add1b6489e1a1563c71519daf732cf, < 6e06a68fbbfcd8576eee8f7139fa2b13c9b72e91 | ≥ 57569c37f0add1b6489e1a1563c71519daf732cf, < b287e21e73ec23f3788fbe40037c42dbe6e9a9a9 | ≥ 57569c37f0add1b6489e1a1563c71519daf732cf, < 48b19b79cfa37b1e50da3b5a8af529f994c08901 | 897dbbc57d71e8a34ec1af8e573a142de457da38 | 0a0b861fce2657ba08ec356a74346b37ca4b2008 | ≥ 5.10.150, < 5.10.178 | ≥ 5.15.75, < 5.15.107 | ≥ 5.19.17, < 5.20 | ≥ 6.0.3, < 6.1 | 6.1
  • linux_kernel≥ 5.10.150, < 5.10.178 | ≥ 5.15.75, < 5.15.107 | ≥ 5.19.17, < 6.0 | ≥ 6.0.3, < 6.1.24 | ≥ 6.2, < 6.2.11 | 6.3:rc1 | 6.3:rc2 | 6.3:rc3 | 6.3:rc4 | 6.3:rc5
Debian1 product
  • linux< 6.1.25-1

3 vendors · 111 products

References

9 links