Bug 2267738 (CVE-2023-52564)

Summary: CVE-2023-52564 kernel: tty: n_gsm: use-after-free in gsm_cleanup_mux()
Product: [Other] Security Response Reporter: ybuenos
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: CLOSED NOTABUG 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, jforbes, 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 5.10.198, kernel 5.15.134, kernel 6.1.56, kernel 6.5.6, kernel 6.6 Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel that may lead to a crash.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2024-04-24 14:06:14 UTC 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:    
Bug Blocks: 2267764    

Description ybuenos 2024-03-04 17:17:42 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Revert &#34;tty: n_gsm: fix UAF in gsm_cleanup_mux&#34;

The Linux kernel CVE team has assigned CVE-2023-52564 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024030253-CVE-2023-52564-88cb@gregkh/T/#u
Comment 5 Alex 2024-06-09 15:25:28 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2023-52564 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags NULLPTR UAF NETWORK  ; 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.