Bug 2566567 (CVE-2026-121520)
| Summary: | CVE-2026-121520 github.com/moby/buildkit: BuildKit: Privilege escalation via unauthorized extended file attribute modification | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | abarbaro, akhatavk, akoudelk, alizardo, amctagga, anjoseph, anpicker, aoconnor, aos-team-art-private, asatyam, asdas, bniver, cahl, cdrage, crizzo, dfreiber, dhanak, diagrawa, dkeler, doconnor, dpaolell, drosa, drow, dschmidt, dsimansk, dymurray, eborisov, eglynn, flucifre, gbenhaim, gmeno, gparvin, groman, gtanzill, hasun, hoberger, ibolton, ikhan, jbalunas, jburrell, jbuscemi, jchui, jdelft, jfula, jhe, jjoyce, jlanda, jmatthew, jmontleo, jowilson, jprabhak, jpretori, jschluet, jupierce, kbempah, kingland, kshier, ktsao, lball, lbragsta, lgamliel, lgarciaa, lhh, ljawale, lpele, mbenjamin, mbiarnes, mburns, mgarciac, mhackett, mnovotny, msilmser, nboldt, ngough, niyer, nyancey, oaljalju, ometelka, pgaikwad, ppalepu, ppostler, prdhamdh, psrna, ptisnovs, rbobbitt, rekumar, rhaigner, rhel-process-autobot, rjohnson, rushinde, sabiswas, sakbas, sarad, sausingh, sbratsla, sdawley, sghai, sidsharm, simaishi, slucidi, solenoci, sostapov, sprizend, sseago, stcannon, suppawar, syedriko, thason, tsze, twaugh, vereddy, veshanka, vkumar, vlaad, vvoronko, watson-tool-maintainers, wenshen, wtam, xdharmai, yguenane |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in BuildKit. A client with access to the BuildKit control application programming interface (API) can submit a specially crafted build request to set extended attributes—additional metadata stored with files—on files located outside the BuildKit state directory. Manipulating these security-sensitive attributes on the host could allow an attacker to achieve privilege escalation on the underlying system.
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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: | 2567089, 2567090, 2567091, 2567092, 2567093, 2567094, 2567095, 2567096, 2567097, 2567098, 2567099 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-11-03 22:23:13 UTC
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