Bug 2434430 (CVE-2025-61730)

Summary: CVE-2025-61730 crypto/tls: Handshake messages may be processed at the incorrect encryption level in crypto/tls
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, adistefa, akostadi, akoudelk, alcohan, alebedev, alizardo, amasferr, amctagga, anjoseph, anpicker, ansmith, anthomas, aoconnor, asatyam, bdettelb, bniver, chfoley, ckandaga, cmah, crizzo, dakwon, dhanak, diagrawa, dkeler, dmayorov, doconnor, drosa, dschmidt, dsimansk, dymurray, eaguilar, ebaron, eborisov, eglynn, ehelms, erezende, fdeutsch, flucifre, ggainey, ggrzybek, gmeno, gparvin, groman, hasun, ibolton, jbalunas, jburrell, jcantril, jchui, jfula, jhe, jjoyce, jkoehler, jlanda, jlledo, jmatthew, jmontleo, jolong, jowilson, jpasqual, jprabhak, jpretori, jraez, jschluet, jscholz, juwatts, kingland, kshier, ktsao, kverlaen, lball, lbragsta, lchilton, lgamliel, lhh, lphiri, manissin, mattdavi, matzew, mbenjamin, mbocek, mburns, mgarciac, mhackett, mhulan, mnovotny, mrunge, mwringe, nboldt, ngough, nmoumoul, nyancey, oaljalju, ometelka, oramraz, osousa, pahickey, pantinor, parichar, pcreech, peholase, pgaikwad, pjindal, psrna, ptisnovs, pvasanth, rchan, rekumar, rfreiman, rgodfrey, rhaigner, rhel-process-autobot, rjohnson, rojacob, sabiswas, sakbas, sausingh, sbratsla, sdawley, sfeifer, simaishi, slucidi, smallamp, smcdonal, smullick, sostapov, sseago, stcannon, stirabos, suppawar, swoodman, syedriko, tasato, teagle, thason, tmalecek, tsedmik, tzivkovi, vereddy, veshanka, vimartin, vvoronko, watson-tool-maintainers, wenshen, whayutin, wtam, xdharmai, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A TLS connection handling flaw has been discovered in the golang crypto/tls library. During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries (for instance the Client Hello and Encrypted Extensions messages), the subsequent messages may be processed before the encryption level changes. This can cause some minor information disclosure if a network-local attacker can inject messages during the handshake.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-01-28 20:02:00 UTC 
During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries (for instance the Client Hello and Encrypted Extensions messages), the subsequent messages may be processed before the encryption level changes. This can cause some minor information disclosure if a network-local attacker can inject messages during the handshake.