A buffer overflow in parsing WebP images may result in the execution of arbitrary code. For the oldstable distribution (bullseye), this problem has been fixed in
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Archive for September 17th, 2023
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This update provides Firefox 117.0.1, with a significant security fix (for [CVE-2023-4863](https://access.redhat.com/security/cve/CVE-2023-4863)) and various bug fixes.