Executive Summary

Informations
Name CVE-2024-27023 First vendor Publication 2024-05-01
Vendor Cve Last vendor Modification 2024-05-01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

md: Fix missing release of 'active_io' for flush

submit_flushes
atomic_set(&mddev->flush_pending, 1);
rdev_for_each_rcu(rdev, mddev)
atomic_inc(&mddev->flush_pending);
bi->bi_end_io = md_end_flush
submit_bio(bi);
/* flush io is done first */
md_end_flush
if (atomic_dec_and_test(&mddev->flush_pending))
percpu_ref_put(&mddev->active_io)
-> active_io is not released

if (atomic_dec_and_test(&mddev->flush_pending))
-> missing release of active_io

For consequence, mddev_suspend() will wait for 'active_io' to be zero forever.

Fix this problem by releasing 'active_io' in submit_flushes() if 'flush_pending' is decreased to zero.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-27023

Sources (Detail)

https://git.kernel.org/stable/c/02dad157ba11064d073f5499dc33552b227d5d3a
https://git.kernel.org/stable/c/11f81438927f84edfaaeb5d5f10856c3a1c1fc82
https://git.kernel.org/stable/c/6b2ff10390b19a2364af622b6666b690443f9f3f
https://git.kernel.org/stable/c/855678ed8534518e2b428bcbcec695de9ba248e8
Source Url

Alert History

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0
1
Date Informations
2024-05-02 00:27:26
  • Multiple Updates
2024-05-01 17:27:27
  • First insertion