Out-of-bounds Read in Linux Kernel
CVE-2023-42755
A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.3% 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
- Debian Linux — versions 10.0
- 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
- Red Hat Enterprise Linux — versions 8.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2024:2950 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:3138 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-42755 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- seclists.org/oss-sec/2023/q3/229 (Exploit, Patch, Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-42755?
- CVE-2023-42755 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2023-10-05.
- How severe is CVE-2023-42755?
- Medium severity. CVSS v3 base score is 6.5 out of 10.