Bug 2521893 - CVE-2026-68767 hashcat: hashcat: Out-of-bounds heap write leading to denial of service [fedora-all]
Summary: CVE-2026-68767 hashcat: hashcat: Out-of-bounds heap write leading to denial o...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: hashcat
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Carlos Rodriguez-Fernandez
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["86817295-a591-4099-937d-a...
Depends On:
Blocks: CVE-2026-68767
TreeView+ depends on / blocked
 
Reported: 2026-08-24 13:24 UTC by Vladimir Vasilev
Modified: 2026-08-24 13:24 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Vladimir Vasilev 2026-08-24 13:24:34 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

hashcat's fgetl() function in src/filehandling.c writes a null terminator one byte past the caller's buffer when an input line is exactly the buffer length. Attackers can trigger this out-of-bounds heap write by providing a hash file, potfile, or wordlist containing a line of exactly HCBUFSIZ_LARGE bytes.


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