Out-of-bounds Read in Linux Kernel
CVE-2023-39193
A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (31.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000
Affected products
- Linux Kernel
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.18.0-553.rt7.342.el8_10, 0:4.18.0-553.el8_10
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-427.13.1.el9_4
- Red Hat Enterprise Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2024:2394 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:2950 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:3138 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-39193 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- www.zerodayinitiative.com/advisories/ZDI-CAN-18866/ (Patch, VDB Entry, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-39193?
- CVE-2023-39193 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2023-10-09.
- How severe is CVE-2023-39193?
- Medium severity. CVSS v3 base score is 6.1 out of 10.