Strix
26.1K

CVE-2004-2536

UnknownEPSS 2.34%

Last modified

CVE-2004-2536 is a vulnerability of currently unknown severity. The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.. EPSS estimates a 2.34% chance of exploitation in the next 30 days.

Description

The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.

Metrics

EPSS Probability
2.34%

81.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
LinuxLinux Kernel2.6.0
LinuxLinux Kernel2.6.1
LinuxLinux Kernel2.6.2
LinuxLinux Kernel2.6.3
LinuxLinux Kernel2.6.4
LinuxLinux Kernel2.6.5

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2004-2536?
The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.
How severe is CVE-2004-2536?
Severity scoring for CVE-2004-2536 is pending analysis. The EPSS model estimates a 2.34% probability of exploitation in the next 30 days.
How do I fix CVE-2004-2536?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2004-2536?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST