4.4

CVE-2024-26846: debian debian_linux Double Free

CVSS: 4.4v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2024-26846DEBIAN-CVE-2024-26846
Published 17-04-2024Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2024-26846 is a medium (CVSS 4.4) Double Free vulnerability in debian debian_linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.3% of scored vulnerabilities.

Overall risk
18/100
0100
Low · default modelHow is this calculated?
CVSS score
4.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.22%
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 28 · Related 23
DLA-3842-1DSA-5681-1RHSA-2024:7000RHSA-2024:9315RHSA-2025:2270SUSE-SU-2024:1979-1

Timeline

  1. 17-04-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: do not wait in vain when unloading module The module exit path has race between deleting all controllers and freeing 'left over IDs'. To prevent double free a synchronization between nvme_delete_ctrl and ida_destroy has been added by the initial commit. There is some logic around trying to prevent from hanging forever in wait_for_completion, though it does not handling all cases. E.g. blktests is able to reproduce the situation where the module unload hangs forever. If we completely rely on the cleanup code executed from the nvme_delete_ctrl path, all IDs will be freed eventually. This makes calling ida_destroy unnecessary. We only have to ensure that all nvme_delete_ctrl code has been executed before we leave nvme_fc_exit_module. This is done by flushing the nvme_delete_wq workqueue. While at it, remove the unused nvme_fc_wq workqueue too.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.22% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.22%

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

Ubuntu117 products
  • linuxAll versions (No fix recorded) | < 5.15.0-112.122
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1063.69
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
Linux2 products
  • linux≥ 4c73cbdff1119d088ed16d63def59ad32b11b18f, < 4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 | ≥ 4c73cbdff1119d088ed16d63def59ad32b11b18f, < 0bf567d6d9ffe09e059bbdfb4d07143cef42c75c | ≥ 4c73cbdff1119d088ed16d63def59ad32b11b18f, < 085195aa90a924c79e35569bcdad860d764a8e17 | ≥ 4c73cbdff1119d088ed16d63def59ad32b11b18f, < baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 | ≥ 4c73cbdff1119d088ed16d63def59ad32b11b18f, < c0882c366418bf9c19e1ba7f270fe377a9bf5d67 | ≥ 4c73cbdff1119d088ed16d63def59ad32b11b18f, < 70fbfc47a392b98e5f8dba70c6efc6839205c982 | 5.3
  • linux_kernel< 5.10.211 | ≥ 5.11, < 5.15.150 | ≥ 5.16, < 6.1.80 | ≥ 6.2, < 6.6.19 | ≥ 6.7, < 6.7.7 | 6.8:rc1 | 6.8:rc2

3 vendors · 121 products

References

21 links
Show all 21 references