Bug 2531004 (CVE-2026-87823)

Summary: CVE-2026-87823 com.github.luben/zstd-jni: zstd-jni: Denial of Service or Information Disclosure via out-of-bounds read
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in zstd-jni. This vulnerability arises from insufficient bounds checks in direct-ByteBuffer frame-size native methods, which allows attackers to provide negative or overflowing offsets. A remote attacker can exploit this by supplying specially crafted negative offset values, leading to out-of-bounds memory reads. This can result in the termination of the Java Virtual Machine (JVM), causing a Denial of Service (DoS), or the disclosure of sensitive information by extracting arbitrary frame size data from unintended memory locations.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2531356, 2531357, 2531358, 2531359    
Bug Blocks:    

Description OSIDB Bzimport 2026-09-09 14:52:45 UTC 
zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.