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Message-ID: <332f640e-0ffa-4191-8c74-015c0db9bd56@gmail.com>
Date: Sun, 25 Oct 2026 10:33:37 -0400
From: Demi Marie Obenour <demiobenour@...il.com>
To: oss-security@...ts.openwall.com, Roman Kuligin <romaka@...ox.lv>
Subject: Re: PHP 5.4.23 (custom 5.4-5.6) backported patch for
PHP2Shell OOM vulnerability (CVE-2026-109618)
On 10/24/26 15:56, Roman Kuligin wrote:
> Hello, I have developed a backported .patch for EOL versions of PHP (specifically PHP 5.4, 5.5, and 5.6) to mitigate the critical PHP2Shell Out-of-Memory (OOM) vulnerability (CVE-2026-109618 / CVE-2026-109619). Since these legacy versions are no longer supported by the upstream PHP team, this patch updates the internal memory allocation model to prevent memory exhaustion and crashes during file upload progress tracking. The patch and instructions are publicly available on GitHub: https://github.com/akamor2800/php-5.4-cve-2026-php2shell-patch Best regards.
In light of the size of the upstream patch, would it be better to handle out of memory by crashing the process instead?
--
Sincerely,
Demi Marie Obenour (she/her/hers)
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