Bug 2277937 (CVE-2024-26928)

Summary: CVE-2024-26928 kernel: smb: client: potential use-after-free in cifs_debug_files_proc_show()
Product: [Other] Security Response Reporter: Mauro Matteo Cascella <mcascell>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
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 6.1.85, kernel 6.6.26, kernel 6.8.5, kernel 6.9-rc3 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel. The following vulnerability has been resolved: smb: client: fix potential UAF in cifs_debug_files_proc_show().
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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: 2277938    
Bug Blocks: 2277879    

Description Mauro Matteo Cascella 2024-04-30 07:40:31 UTC
In the Linux kernel, the following vulnerability has been resolved:

smb: client: fix potential UAF in cifs_debug_files_proc_show() - Greg Kroah-Hartman

The Linux kernel CVE team has assigned CVE-2024-26928 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024042849-CVE-2024-26928-e543@gregkh/

Comment 2 Mauro Matteo Cascella 2024-04-30 07:41:12 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2277938]

Comment 6 Alex 2024-06-09 16:50:17 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26928 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags LOCK DISK INIT SIMPLEFIX UAF SERVERTOCLIENT  ; these flags parsed automatically based on patch 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.