CVE-2009-0748: The ext4_fill_super function in fs/ext4/super.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 befo...

Security readout for executives and security teams

This is an old Linux kernel ext4 filesystem bug. A local user could trigger a system crash by causing a vulnerable kernel to handle a malformed ext4 filesystem mount. It is a denial-of-service issue, not a documented data theft or remote takeover flaw in the supplied sources. Exposure is most likely limited to legacy systems still running affected 2.6.27 or 2.6.28 kernels, or vendor builds based on them. Risk depends on whether local users or automated workflows can mount untrusted ext4 media or filesystem images. Treat as a legacy-platform hygiene issue. It is important for environments with old kernels or shared local access, but the supplied evidence does not support emergency prioritization for current, patched systems. Mitigation focus: Upgrade beyond Linux 2.6.27.19 or 2.6.28.7, as applicable.; Apply relevant vendor kernel updates from Red Hat, Debian, Ubuntu, or VMware guidance.; Restrict local mounting of untrusted ext4 filesystems where feasible..

Prepared

Jun 28, 2026, 11:23 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.