NULL pointer dereference in Linux Kernel
CVE-2023-3772
A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading to a possible kernel crash and denial of service.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (36.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 10.0, 12.0
- Fedoraproject Fedora
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.18.0-513.5.1.rt7.307.el8_9, 0:4.18.0-513.5.1.el8_9
- Red Hat Enterprise Linux 8.6 Extended Update Support — versions 0:4.18.0-372.87.1.el8_6
- Red Hat Enterprise Linux 8.8 Extended Update Support — versions 0:4.18.0-477.43.1.el8_8
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-362.8.1.el9_3
- Red Hat Virtualization 4 For Enterprise Linux 8 — versions 0:4.18.0-372.87.1.el8_6
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2023:6583 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:6901 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7077 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:0412 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:0575 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-3772 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-3772?
- CVE-2023-3772 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-07-25.
- How severe is CVE-2023-3772?
- Medium severity. CVSS v3 base score is 5.5 out of 10.