# CVE-2025-9232: Out-of-bounds read in HTTP client no_proxy handling CVE-2025-9232 is fixed in 17 products on 1 platform, first by efi-shell-aa64 2025.02-8ubuntu3, released September 29, 2025. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2025-9232 - Priority: Routine - CVSS: 5.9 (Moderate) - EPSS: 0.0200 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 29, 2025 - Weakness: Out-of-bounds Read - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-9232 ## Description Issue summary: An application using the OpenSSL HTTP client API functionsmaytrigger an out-of-bounds read if the 'no_proxy' environment variable is setandthe host portion of the authority component of the HTTP URL is an IPv6address.Impact summary: An out-of-bounds read can trigger a crash which leads toDenial of Service for an application.The OpenSSL HTTP client API functions can be used directly by applicationsbut they are also used by the OCSP client functions and CMP (CertificateManagement Protocol) client implementation in OpenSSL. However the URLsusedby these implementations are unlikely to be controlled by an attacker.In this vulnerable code the out of bounds read can only trigger a crash.Furthermore the vulnerability requires an attacker-controlled URL to bepassed from an application to the OpenSSL function and the user has to havea 'no_proxy' environment variable set. For the aforementioned reasons theissue was assessed as Low severity.The vulnerable code was introduced in the following patch releases:3.0.16, 3.1.8, 3.2.4, 3.3.3, 3.4.0 and 3.5.0.The FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected bythisissue, as the HTTP client implementation is outside the OpenSSL FIPS moduleboundary. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | efi-shell-aa64 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [efi-shell-aa64 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-efi-shell-aa64-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | efi-shell-aa64 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [efi-shell-aa64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-efi-shell-aa64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-aa64 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [efi-shell-aa64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-efi-shell-aa64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-arm Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [efi-shell-arm 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-efi-shell-arm-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | efi-shell-arm Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [efi-shell-arm 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-efi-shell-arm-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-arm Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [efi-shell-arm 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-efi-shell-arm-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-ia32 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [efi-shell-ia32 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-efi-shell-ia32-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | efi-shell-ia32 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [efi-shell-ia32 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-efi-shell-ia32-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-ia32 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [efi-shell-ia32 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-efi-shell-ia32-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-loongarch64 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [efi-shell-loongarch64 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-efi-shell-loongarch64-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | efi-shell-loongarch64 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [efi-shell-loongarch64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-efi-shell-loongarch64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-loongarch64 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [efi-shell-loongarch64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-efi-shell-loongarch64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-riscv64 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [efi-shell-riscv64 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-efi-shell-riscv64-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | efi-shell-riscv64 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [efi-shell-riscv64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-efi-shell-riscv64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-riscv64 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [efi-shell-riscv64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-efi-shell-riscv64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-x64 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [efi-shell-x64 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-efi-shell-x64-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | efi-shell-x64 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [efi-shell-x64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-efi-shell-x64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | efi-shell-x64 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [efi-shell-x64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-efi-shell-x64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | libssl3t64 Ubuntu 25.04 (plucky) | 3.4.1-1ubuntu4 | [libssl3t64 3.4.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libssl3t64-3.4.1-1ubuntu4.md) | Sep 30, 2025 | | Linux | libssl3t64 Ubuntu 25.10 (questing) | 3.5.3-1ubuntu2 | [libssl3t64 3.5.3-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libssl3t64-3.5.3-1ubuntu2.md) | Sep 29, 2025 | | Linux | libssl3t64 Ubuntu 26.04.1 LTS (resolute) | 3.5.3-1ubuntu2 | [libssl3t64 3.5.3-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libssl3t64-3.5.3-1ubuntu2.md) | Sep 29, 2025 | | Linux | openssl Debian 12.15 (bookworm) | 3.0.17-1~deb12u3 | [DEBIAN-CVE-2025-9232](https://patchblox.com/security/data/fix/linux/debian-cve-2025-9232.md) | Sep 30, 2025 | | Linux | openssl Debian 13.5 (trixie) | 3.5.1-1+deb13u1 | [DEBIAN-CVE-2025-9232](https://patchblox.com/security/data/fix/linux/debian-cve-2025-9232.md) | Sep 30, 2025 | | Linux | openssl Debian 14 | 3.5.4-1 | [DEBIAN-CVE-2025-9232](https://patchblox.com/security/data/fix/linux/debian-cve-2025-9232.md) | Sep 30, 2025 | | Linux | openssl Ubuntu 25.04 (plucky) | 3.4.1-1ubuntu4 | [openssl 3.4.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openssl-3.4.1-1ubuntu4.md) | Sep 30, 2025 | | Linux | openssl Ubuntu 25.10 (questing) | 3.5.3-1ubuntu2 | [openssl 3.5.3-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-openssl-3.5.3-1ubuntu2.md) | Sep 29, 2025 | | Linux | openssl Ubuntu 26.04.1 LTS (resolute) | 3.5.3-1ubuntu2 | [openssl 3.5.3-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-openssl-3.5.3-1ubuntu2.md) | Sep 29, 2025 | | Linux | openssl-3 opensuse-leap 16.0 | 3.5.0-160000.4.1 | [OPENSUSE-SU-2025:20164-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20164-1.md) | Dec 15, 2025 | | Linux | openssl-3 sles 16.0 | 3.5.0-160000.4.1 | [SUSE-SU-2025:21213-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21213-1.md) | Dec 15, 2025 | | Linux | openssl-provider-legacy Ubuntu 25.04 (plucky) | 3.4.1-1ubuntu4 | [openssl-provider-legacy 3.4.1-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openssl-provider-legacy-3.4.1-1ubuntu4.md) | Sep 30, 2025 | | Linux | openssl-provider-legacy Ubuntu 25.10 (questing) | 3.5.3-1ubuntu2 | [openssl-provider-legacy 3.5.3-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-openssl-provider-legacy-3.5.3-1ubuntu2.md) | Sep 29, 2025 | | Linux | openssl-provider-legacy Ubuntu 26.04.1 LTS (resolute) | 3.5.3-1ubuntu2 | [openssl-provider-legacy 3.5.3-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-openssl-provider-legacy-3.5.3-1ubuntu2.md) | Sep 29, 2025 | | Linux | ovmf Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [ovmf 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-ovmf-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | ovmf Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [ovmf 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-ovmf-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | ovmf Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [ovmf 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-ovmf-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | ovmf-ia32 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [ovmf-ia32 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-ovmf-ia32-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | ovmf-ia32 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [ovmf-ia32 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-ovmf-ia32-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | ovmf-ia32 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [ovmf-ia32 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-ovmf-ia32-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | ovmf-inteltdx Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [ovmf-inteltdx 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-ovmf-inteltdx-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | ovmf-inteltdx Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [ovmf-inteltdx 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-ovmf-inteltdx-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | qemu-efi-aarch64 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [qemu-efi-aarch64 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-qemu-efi-aarch64-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | qemu-efi-aarch64 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [qemu-efi-aarch64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-qemu-efi-aarch64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | qemu-efi-aarch64 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [qemu-efi-aarch64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-qemu-efi-aarch64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | qemu-efi-arm Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [qemu-efi-arm 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-qemu-efi-arm-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | qemu-efi-arm Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [qemu-efi-arm 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-qemu-efi-arm-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | qemu-efi-arm Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [qemu-efi-arm 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-qemu-efi-arm-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | qemu-efi-loongarch64 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [qemu-efi-loongarch64 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-qemu-efi-loongarch64-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | qemu-efi-loongarch64 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [qemu-efi-loongarch64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-qemu-efi-loongarch64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | qemu-efi-loongarch64 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [qemu-efi-loongarch64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-qemu-efi-loongarch64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | qemu-efi-riscv64 Ubuntu 25.04 (plucky) | 2025.02-3ubuntu2.2 | [qemu-efi-riscv64 2025.02-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-qemu-efi-riscv64-2025.02-3ubuntu2.2.md) | Sep 30, 2025 | | Linux | qemu-efi-riscv64 Ubuntu 25.10 (questing) | 2025.02-8ubuntu3 | [qemu-efi-riscv64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-qemu-efi-riscv64-2025.02-8ubuntu3.md) | Sep 29, 2025 | | Linux | qemu-efi-riscv64 Ubuntu 26.04.1 LTS (resolute) | 2025.02-8ubuntu3 | [qemu-efi-riscv64 2025.02-8ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-qemu-efi-riscv64-2025.02-8ubuntu3.md) | Sep 29, 2025 | --- Data as of 2026-11-07T18:46:35Z UTC. 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