Red Hat Enterprise Linux content accelerator denial of service
| rhel-content-accelerator-dos (38823) |  Low Risk |
Description:
Red Hat Enterprise Linux is vulnerable to a denial of service, caused by a memory leak in the Red Hat Content Accelerator kernel patch. By sending an overly large number of open requests, a local attacker could exploit this vulnerability to consume all available memory resources, resulting in a denial of service.
Platforms Affected:
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 5
- RedHat, Enterprise Linux 5 Client
Remedy:
Apply the appropriate update for your system. See References.
Consequences:
Denial of Service
References:
- Red Hat Bugzilla Bug 315051, CVE-2007-5494 open(O_ATOMICLOOKUP) leaks dentry at https://bugzilla.redhat.com/show_bug.cgi?id=315051.
- ASA-2007-537: kernel security and bug fix update (RHSA-2007-1104)
- BID-26657: Red Hat Content Accelerator Memory Leak Local Denial Of Service Vulnerability
- CVE-2007-5494: Memory leak in the Red Hat Content Accelerator kernel patch in Red Hat Enterprise Linux (RHEL) 4 and 5 allows local users to cause a denial of service (memory consumption) via a large number of open requests involving O_ATOMICLOOKUP.
- RHSA-2007-0993: Important: kernel security update
- RHSA-2007-1104: Important: kernel security and bug fix update
- SECTRACK ID: 1019017: Red Hat Content Accelerator Kernel Patch open(O_ATOMICLOOKUP) Function Lets Local Users Deny Service
Reported:
Nov 29, 2007
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