5.5

CVE-2023-52458: block: add check that partition length needs to be aligned with block size

Modified
AliasesUBUNTU-CVE-2023-52458DEBIAN-CVE-2023-52458
Published 23-02-2024Last modified 15-10-2026

Vulnerability summary

CVE-2023-52458 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 14% 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
0.23%
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 40 · Related 37
DLA-3842-1DSA-5681-1RHSA-2024:4928RHSA-2024:5066RHSA-2024:5067SUSE-SU-2024:2135-1

Timeline

  1. 23-02-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: block: add check that partition length needs to be aligned with block size Before calling add partition or resize partition, there is no check on whether the length is aligned with the logical block size. If the logical block size of the disk is larger than 512 bytes, then the partition size maybe not the multiple of the logical block size, and when the last sector is read, bio_truncate() will adjust the bio size, resulting in an IO error if the size of the read command is smaller than the logical block size.If integrity data is supported, this will also result in a null pointer dereference when calling bio_integrity_free.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% 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.

Ubuntu116 products
  • linuxAll versions (No fix recorded) | < 4.4.0-269.303 | < 4.15.0-237.249 | < 5.4.0-208.228 | < 5.15.0-102.112
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1144.150 | < 4.4.0-1182.197 | < 4.15.0-1180.193 | < 5.4.0-1140.150 | < 5.15.0-1057.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 633395b67bb222f85bb8f825c7751a54b9ec84ee, < 8f6dfa1f1efe6dcca2d43e575491d8fcbe922f62 | ≥ 633395b67bb222f85bb8f825c7751a54b9ec84ee, < 5010c27120962c85d2f421d2cf211791c9603503 | ≥ 633395b67bb222f85bb8f825c7751a54b9ec84ee, < ef31cc87794731ffcb578a195a2c47d744e25fb8 | ≥ 633395b67bb222f85bb8f825c7751a54b9ec84ee, < cb16cc1abda18a9514106d2ac8c8d7abc0be5ed8 | ≥ 633395b67bb222f85bb8f825c7751a54b9ec84ee, < bcdc288e7bc008daf38ef0401b53e4a8bb61bbe5 | ≥ 633395b67bb222f85bb8f825c7751a54b9ec84ee, < 6f64f866aa1ae6975c95d805ed51d7e9433a0016 | 4.10
  • linux_kernel< 5.10.215 | ≥ 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 · 119 products

References

40 links
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