A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
                
            Metrics
Affected Vendors & Products
References
        History
                    No history.
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: redhat
Published: 2022-07-06T15:06:43
Updated: 2024-08-03T17:01:08.303Z
Reserved: 2021-08-10T00:00:00
Link: CVE-2021-3696
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Modified
Published: 2022-07-06T16:15:08.270
Modified: 2024-11-21T06:22:10.657
Link: CVE-2021-3696
 Redhat
                        Redhat