CVE-2011-1748: The raw_release function in net/can/raw.c in the Linux kernel before 2.6.39-rc6 does not properly validate...

Security readout for executives and security teams

CVE-2011-1748 is an old Linux kernel flaw in CAN raw socket cleanup. A local user could trigger a kernel crash through a crafted socket release operation. Business risk is mainly service interruption on systems still running affected kernels or vendor backports without the fix. Exposure is likely limited to legacy Linux systems using kernels before 2.6.39-rc6, or downstream kernels missing the backported fix, where local users can access CAN raw socket functionality. Treat this as a targeted legacy-system risk, not a broad internet emergency. Prioritize if affected Linux hosts are multi-user, safety-sensitive, or difficult to reboot after a kernel crash. Mitigation focus: Upgrade to a vendor-supported kernel containing the upstream socket validation fix.; Confirm downstream vendor advisories for backported fixes on maintained distributions.; Restrict local shell access on systems that cannot be upgraded promptly..

Prepared

Jun 28, 2026, 01:17 UTC (UTC+00:00)

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