Bug 2531007 (CVE-2026-87825)

Summary: CVE-2026-87825 com.github.luben/zstd-jni: zstd-jni: Data corruption or denial of service via use-after-free vulnerability
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: amctagga, ant, anujha, aoconnor, asoldano, asyoung, avibelli, bbaranow, bgeorges, bmaxwell, bniver, bstansbe, ccranfor, cescoffi, cmah, dandread, dkreling, dlofthou, ewittman, flucifre, fmariani, fmongiar, gmalinko, gmeno, groman, gsmet, gtanzill, istudens, ivassile, iweiss, janstey, jbuscemi, jhollowa, jmartisk, jnethert, jpechane, jwon, kaycoth, lthon, manderse, mbenjamin, mcarlett, mhackett, mosmerov, msvehla, nipatil, nwallace, olubyans, pantinor, pberan, pdelbell, pesilva, pgallagh, pjindal, pmackay, prichard, probinso, rguimara, rhel-process-autobot, rkubis, rruss, rstancel, rstepani, rsvoboda, sbiarozk, sostapov, sthirugn, tcunning, thjenkin, tqvarnst, vdosoudi, vereddy, watson-tool-maintainers, yfang
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in zstd-jni. This use-after-free vulnerability occurs because streams and contexts only hold a dictionary's shared lock during the load call, allowing the dictionary to be closed while still being referenced. A remote attacker could exploit this by closing a dictionary after associating it with a stream or context. Subsequent read or write operations would then access freed native memory, leading to silent data corruption or a Java Virtual Machine (JVM) crash, resulting in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-09-09 14:53:02 UTC 
zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be closed while still referenced. Attackers can close a dictionary after associating it with a stream or context, causing subsequent read or write operations to access freed native memory, resulting in silent data corruption or JVM crashes.