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JLSEC-2026-1155 Issue summary: A signed integer overflow when sizing the destination buffer for Unicode output in...

🗓️ 03 Aug 2026 19:08:57Reported by GoogleType 
osv
 osv🔗 osv.dev👁 6 Views

Signed integer overflow in Unicode buffer sizing for Unicode outputs can cause a heap overflow.

Related
Refs
ReporterTitlePublishedViews
Family
freebsd
FreeBSD		OpenSSL -- Multiple vulnerabilities
9 Jun 202600:00
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freebsd
FreeBSD		FreeBSD -- Multiple vulnerabilities in OpenSSL
9 Jun 202600:00
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ibm
IBM Security Bulletins		Security Bulletin: IBM i is Affected By Multiple Vulnerabilities in OpenSSL
14 Jul 202622:25
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ibm
IBM Security Bulletins		Security Bulletin: Due to the use of OpenSSL, IBM EntireX is vulnerable to multiple vulnerabilities
6 Jul 202615:29
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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities impact AIX due to OpenSSL
22 Jul 202608:36
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ibm
IBM Security Bulletins		Security Bulletin: Due to the use of OpenSSL, IBM EntireX is vulnerable to multiple vulnerabilities
1 Jul 202622:38
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nessus
Tenable Nessus		Amazon Linux 2023 : openssl, openssl-devel, openssl-fips-provider-latest (ALAS2023-2026-1853)
22 Jun 202600:00
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nessus
Tenable Nessus		Amazon Linux 2 : edk2, --advisory ALAS2-2026-3363 (ALAS-2026-3363)
22 Jun 202600:00
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nessus
Tenable Nessus		Amazon Linux 2 : openssl11, --advisory ALAS2-2026-3364 (ALAS-2026-3364)
22 Jun 202600:00
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Tenable Nessus		Amazon Linux 2 : openssl, --advisory ALAS2-2026-3365 (ALAS-2026-3365)
22 Jun 202600:00
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SourceLink
githubwww.github.com/advisories/GHSA-w853-v86g-gv7j
githubwww.github.com/openssl/openssl/commit/4f8d2bddaa2c8e06f9c33390ee1717059a6e4be6
githubwww.github.com/openssl/openssl/commit/80c15faaf78042bbb8654a0e234c50c381732f74
githubwww.github.com/openssl/openssl/commit/bd17511070fb39a67bfa19682affb765e706a974
githubwww.github.com/openssl/openssl/commit/c332adaced43bcbb85f97410597e951c11ec3083
githubwww.github.com/openssl/openssl/commit/d32350ae8ef7426718f5aa9e383d4b51398ee255
githubwww.github.com/openssl/security/commit/4f8d2bddaa2c8e06f9c33390ee1717059a6e4be6
githubwww.github.com/openssl/security/commit/80c15faaf78042bbb8654a0e234c50c381732f74
githubwww.github.com/openssl/security/commit/bd17511070fb39a67bfa19682affb765e706a974
githubwww.github.com/openssl/security/commit/c332adaced43bcbb85f97410597e951c11ec3083
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13 Aug 2026 13:00Current
7.9High risk
Vulners AI Score7.9
CVSS 3.18.1
EPSS0.0063
unicode sizing overflowheap buffer overflowstring copy overflowcertificate processingfips modulesopenssl libraryattacker input sizehalf gigabyte
6