5.5

CVE-2023-52893: gsmi: fix null-deref in gsmi_get_variable

Analyzed
AliasesUBUNTU-CVE-2023-52893DEBIAN-CVE-2023-52893
Published 21-08-2024Last modified 11-05-2026

Vulnerability summary

CVE-2023-52893 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.1% 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
0.24%
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 8
SUSE-SU-2024:3189-1SUSE-SU-2024:3190-1SUSE-SU-2024:3209-1SUSE-SU-2024:3227-1SUSE-SU-2024:3251-1SUSE-SU-2024:3252-1

Timeline

  1. 21-08-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: gsmi: fix null-deref in gsmi_get_variable We can get EFI variables without fetching the attribute, so we must allow for that in gsmi. commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore access layer") added a new get_variable call with attr=NULL, which triggers panic in gsmi.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% 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.

Ubuntu112 products
  • linuxAll versions (No fix recorded) | < 4.15.0-209.220 | < 5.4.0-147.164 | < 5.15.0-70.77
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1154.167 | < 5.4.0-1100.108 | < 5.15.0-1034.38
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 74c5b31c6618f01079212332b2e5f6c42f2d6307, < ee5763ef829bd923033510de6d1df7c73f085e4b | ≥ 74c5b31c6618f01079212332b2e5f6c42f2d6307, < 32313c11bdc8a02c577abaf865be3664ab30410a | ≥ 74c5b31c6618f01079212332b2e5f6c42f2d6307, < ffef77794fb5f1245c3249b86342bad2299accb5 | ≥ 74c5b31c6618f01079212332b2e5f6c42f2d6307, < ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd | ≥ 74c5b31c6618f01079212332b2e5f6c42f2d6307, < eb0421d90f916dffe96b4c049ddf01c0c50620d2 | ≥ 74c5b31c6618f01079212332b2e5f6c42f2d6307, < 6646d769fdb0ce4318ef9afd127f8526d1ca8393 | ≥ 74c5b31c6618f01079212332b2e5f6c42f2d6307, < a769b05eeed7accc4019a1ed9799dd72067f1ce8 | 3.0
  • linux_kernel≥ 3.0, < 4.14.304 | ≥ 4.15, < 4.19.271 | ≥ 4.20, < 5.4.230 | ≥ 5.5, < 5.10.165 | ≥ 5.11, < 5.15.90 | ≥ 5.16, < 6.1.8 | 6.2:rc1 | 6.2:rc2 | 6.2:rc3 | 6.2:rc4
Debian1 product
  • linux< 6.1.8-1

3 vendors · 115 products

References

11 links
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