Integer overflow in Linux
CVE-2024-26828
In the Linux kernel, the following vulnerability has been resolved: cifs: fix underflow in parse_server_interfaces() In this loop, we step through the buffer and after each item we check if the size_left is greater than the minimum size we need. However, the problem is that "bytes_left" is type ssize_t while sizeof() is type size_t. That means that because of type promotion, the comparison is done as an unsigned and if we have negative bytes left the loop continues instead of ending.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.000
Affected products
- Linux — versions fe856be475f7cf5ffcde57341d175ce9fd09434b, 4.18, 0
- Linux Kernel — versions 6.8
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2024-26828?
- CVE-2024-26828 is a critical-severity vulnerability in Linux, classified under Integer Underflow. CVSS score: 9.4/10. Published 2024-04-17.
- How severe is CVE-2024-26828?
- Critical severity. CVSS v3 base score is 9.4 out of 10.