Bug 2443104 (CVE-2026-27141)

Summary: CVE-2026-27141 golang.org/x/net/http2: golang.org/x/net/http2: Denial of Service due to malformed HTTP/2 frames
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: aazores, abarbaro, abrianik, akostadi, akoudelk, alcohan, alebedev, alizardo, amasferr, anjoseph, anpicker, ansmith, anthomas, bbrownin, bdettelb, bparees, ckandaga, cmah, crizzo, dhanak, dmayorov, doconnor, drosa, dschmidt, dsimansk, dymurray, eaguilar, ebaron, eborisov, eglynn, ehelms, erezende, fdeutsch, ggainey, ggrzybek, gparvin, hasun, ibolton, jbalunas, jburrell, jcantril, jchui, jeder, jfula, jhe, jjoyce, jkoehler, jlanda, jlledo, jmatthew, jmontleo, jolong, jowilson, jprabhak, jpretori, jraez, jschluet, juwatts, kingland, kshier, ktsao, kverlaen, lball, lbragsta, lchilton, lgamliel, lhh, lphiri, manissin, mbocek, mburns, mgarciac, mhulan, mnovotny, mwringe, nboldt, ngough, nmoumoul, nyancey, oaljalju, ometelka, oramraz, osousa, pahickey, pantinor, parichar, pcreech, peholase, pgaikwad, pjindal, psrna, ptisnovs, pvasanth, rchan, rfreiman, rhaigner, rjohnson, rojacob, sakbas, sausingh, sdawley, sfeifer, simaishi, slucidi, smallamp, smcdonal, smullick, sseago, stcannon, stirabos, syedriko, tasato, teagle, thason, tmalecek, tsedmik, veshanka, wenshen, whayutin, wtam, xdharmai, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in golang.org/x/net/http2. A remote attacker can exploit this vulnerability by sending specially crafted HTTP/2 frames, which are data packets used in the HTTP/2 protocol. Due to a missing check for null values, processing these specific frames (types 0x0a through 0x0f) can cause the server to crash. This leads to a Denial of Service (DoS) condition, making the affected server unavailable to legitimate users.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2443470, 2443471    
Bug Blocks:    

Description OSIDB Bzimport 2026-02-26 20:09:34 UTC
Due to missing nil check, sending 0x0a-0x0f HTTP/2 frames will cause a running server to panic