Bug 2218332 (CVE-2023-39198, ZDI-CAN-20940)
| Summary: | CVE-2023-39198 kernel: QXL: race condition leading to use-after-free in qxl_mode_dumb_create() | ||
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| Product: | [Other] Security Response | Reporter: | Mauro Matteo Cascella <mcascell> |
| Component: | vulnerability | Assignee: | Nobody <nobody> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | acaringi, airlied, allarkin, bhu, chwhite, crwood, cye, cyin, dakr, dbohanno, ddepaula, debarbos, dfreiber, dvlasenk, ezulian, hkrzesin, jarod, jburrell, jdenham, jfaracco, jferlan, jforbes, jlelli, joe.lawrence, jshortt, jstancek, jwyatt, kcarcia, ldoskova, lgoncalv, lzampier, mstowell, nmurray, ptalbert, qzhao, rogbas, rparrazo, rrobaina, rvrbovsk, rysulliv, scweaver, security-response-team, tglozar, tyberry, vkumar, walters, wcosta, williams, wmealing, ycote, ykopkova, ymankad, zhijwang |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | kernel 6.5-rc7 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.
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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: | 2218333, 2218334, 2218335, 2218336, 2248704 | ||
| Bug Blocks: | 2209594 | ||
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Description
Mauro Matteo Cascella
2023-06-28 18:58:17 UTC
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 2248704] This was fixed for Fedora with the 6.4.12 stable kernel updates. This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2024:2394 https://access.redhat.com/errata/RHSA-2024:2394 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2024:2950 https://access.redhat.com/errata/RHSA-2024:2950 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2024:3138 https://access.redhat.com/errata/RHSA-2024:3138 |