Bug 2273109 (CVE-2024-26686)

Summary: CVE-2024-26686 kernel: fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
Product: [Other] Security Response Reporter: Robb Gatica <rgatica>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: acaringi, allarkin, aquini, bhu, chwhite, cye, cyin, dbohanno, debarbos, dfreiber, drow, dvlasenk, esandeen, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mleitner, mmilgram, mstowell, nmurray, ptalbert, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, sidakwo, sukulkar, tglozar, tyberry, vkumar, wcosta, williams, wmealing, ycote, ykopkova, zhijwang
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 6.1.82, kernel 6.7.6, kernel 6.8 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the do_task_stat() function in the Linux kernel, where due to excessive lock contention, a potential hard lockup could be created. This can create a performance bottleneck and lead to kernel unresponsiveness.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2273110    
Bug Blocks: 2273079    

Description Robb Gatica 2024-04-03 22:36:11 UTC
In the Linux kernel, the following vulnerability has been resolved:

fs/proc: do_task_stat: use sig-&gt;stats_lock to gather the threads/children stats

The Linux kernel CVE team has assigned CVE-2024-26686 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024040335-CVE-2024-26686-b22f@gregkh/T

Comment 1 Robb Gatica 2024-04-03 22:36:47 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2273110]

Comment 6 Alex 2024-06-09 15:24:31 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26686 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags LOCK DISK  ; these flags parsed automatically based on patche data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.

Comment 17 errata-xmlrpc 2024-08-08 04:40:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:5102 https://access.redhat.com/errata/RHSA-2024:5102

Comment 18 errata-xmlrpc 2024-08-08 04:51:50 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:5101 https://access.redhat.com/errata/RHSA-2024:5101

Comment 19 errata-xmlrpc 2024-08-13 00:26:47 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:5255 https://access.redhat.com/errata/RHSA-2024:5255

Comment 20 errata-xmlrpc 2024-09-24 01:19:30 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2024:6998 https://access.redhat.com/errata/RHSA-2024:6998

Comment 22 errata-xmlrpc 2024-10-30 00:12:45 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:8614 https://access.redhat.com/errata/RHSA-2024:8614

Comment 23 errata-xmlrpc 2024-10-30 00:31:56 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:8613 https://access.redhat.com/errata/RHSA-2024:8613

Comment 24 errata-xmlrpc 2024-11-12 09:17:08 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315

Comment 25 errata-xmlrpc 2024-12-04 00:45:37 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2024:10771 https://access.redhat.com/errata/RHSA-2024:10771