Out-of-bounds write in rust-openssl - CVE-2026-45784

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Main Vulnerability Database Vulnerabilities #VU131748

Out-of-bounds write in rust-openssl - CVE-2026-45784

Published: May 18, 2026


Vulnerability identifier: #VU131748
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-45784
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause heap corruption.

The vulnerability exists due to out-of-bounds write in CipherCtxRef::cipher_update_inplace when processing non-multiple-of-8 input with AES-KW-PAD ciphers. A remote attacker can provide attacker-influenced plaintext lengths to cause heap corruption.

Only users of AES key-wrap-with-padding ciphers are affected.


Affected software

rust-openssl
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
Public Cloud Module
Python 3 Module
Development Tools Module
Confidential Computing Module
openSUSE Leap
rust-keylime-debuginfo
rust-keylime
snphost-debugsource
snphost
snphost-debuginfo
python311-maturin
aws-nitro-enclaves-binaryblobs-upstream-debuginfo
aws-nitro-enclaves-binaryblobs-upstream
system-group-ne
aws-nitro-enclaves-cli-debugsource
aws-nitro-enclaves-cli
aws-nitro-enclaves-cli-debuginfo
rustup
rustup-debuginfo
rustup-debugsource
himmelblau-sso
himmelblau-qr-greeter
himmelblau
libnss_himmelblau2
himmelblau-debuginfo
pam-himmelblau
himmelblau-sso-debuginfo
himmelblau-sshd-config
python311-cryptography

How to mitigate CVE-2026-45784

Install security update from vendor's website.

rust-openssl - update to 0.10.80
rust-keylime-debuginfo - addressed in versions 0.2.9+49-150400.3.19.1, 0.2.9+49-150400.3.21.1, 0.2.9+49-150500.3.19.1
rust-keylime - addressed in versions 0.2.9+49-150400.3.19.1, 0.2.9+49-150400.3.21.1, 0.2.9+49-150500.3.19.1
snphost-debugsource - update to 0.6.1-150700.3.6.1
snphost - update to 0.6.1-150700.3.6.1
snphost-debuginfo - update to 0.6.1-150700.3.6.1
python311-maturin - update to 1.4.0-150600.3.15.1
aws-nitro-enclaves-binaryblobs-upstream-debuginfo - update to 1.4.5~git0.18a5f6f-150600.10.12.1
aws-nitro-enclaves-binaryblobs-upstream - update to 1.4.5~git0.18a5f6f-150600.10.12.1
system-group-ne - update to 1.4.5~git0.18a5f6f-150600.10.12.1
aws-nitro-enclaves-cli-debugsource - update to 1.4.5~git0.18a5f6f-150600.10.12.1
aws-nitro-enclaves-cli - update to 1.4.5~git0.18a5f6f-150600.10.12.1
aws-nitro-enclaves-cli-debuginfo - update to 1.4.5~git0.18a5f6f-150600.10.12.1
rustup - update to 1.28.2~0-150600.10.13.1
rustup-debuginfo - update to 1.28.2~0-150600.10.13.1
rustup-debugsource - update to 1.28.2~0-150600.10.13.1
himmelblau-sso - update to 2.3.14+git0.e23b4c54-150500.11.12.1
himmelblau-qr-greeter - update to 2.3.14+git0.e23b4c54-150500.11.12.1
himmelblau - update to 2.3.14+git0.e23b4c54-150500.11.12.1
libnss_himmelblau2 - update to 2.3.14+git0.e23b4c54-150500.11.12.1
himmelblau-debuginfo - update to 2.3.14+git0.e23b4c54-150500.11.12.1
pam-himmelblau - update to 2.3.14+git0.e23b4c54-150500.11.12.1
himmelblau-sso-debuginfo - update to 2.3.14+git0.e23b4c54-150500.11.12.1
himmelblau-sshd-config - update to 2.3.14+git0.e23b4c54-150500.11.12.1
python311-cryptography - addressed in versions 41.0.3-150400.16.25.1, 41.0.3-150600.23.9.1

External References

Related Security Bulletins