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Fencer Vulns
high 7.8

CVE-2023-1078 json

A flaw was found in the Linux Kernel in RDS (Reliable Datagram Sockets) protocol.

published 2023-03-27 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-23366

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

A flaw was found in the Linux Kernel in RDS (Reliable Datagram Sockets) protocol. The rds_rm_zerocopy_callback() uses list_entry() on the head of a list causing a type confusion. Local user can trigger this with rds_message_put(). Type confusion leads to `struct rds_msg_zcopy_info *info` actually points to something else that is potentially controlled by local user. It is known how to trigger this, which causes an out of bounds access, and a lock corruption.

Patch / fix

  • linux linux_kernel 4.19.273, 5.4.232, 5.10.168, 5.15.94, 6.1.12
  • linux Debian 14, Debian 13, Debian 12 6.1.12-1

debian advisories DEBIAN-CVE-2023-1078

  • linux Ubuntu 20.04 LTS 5.4.0-149.166
  • linux Ubuntu 22.04 LTS 5.15.0-72.79
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1102.110
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1036.40
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1105.114
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1034.42
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1099.106
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1033.38

ubuntu advisories UBUNTU-CVE-2023-1078

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
  • kernel-syms-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
  • kernel-rt_debug Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
  • kernel-source-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
  • kernel-syms SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +1 more 5.3.18-150200.24.148.1
  • kernel-source SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +1 more 5.3.18-150200.24.148.1
  • kernel-default SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE Live Patching 15 SP2 +3 more 5.3.18-150200.24.148.1
  • kernel-preempt SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +1 more 5.3.18-150200.24.148.1

suse advisories SUSE-SU-2023:2809-1SUSE-SU-2023:1800-1SUSE-SU-2023:1811-1SUSE-SU-2023:1892-1SUSE-SU-2023:1710-1SUSE-SU-2023:1708-1

  • kernel-source openSUSE Tumbleweed 6.2.8-1.1
  • kernel-source openSUSE Tumbleweed 6.6.17-1.1

opensuse advisories openSUSE-SU-2024:12814-1openSUSE-SU-2024:13704-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-1078 updated cvss 7.8

kernel: Heap OOB Write in rds_rm_zerocopy_callback()

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Virtualization 4 redhat-virtualization-host-image-update
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
18 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • n/a Linux kernel

Classification

Weakness
  • CWE-787 Out-of-bounds Write
  • CWE-843 Access of Resource Using Incompatible Type
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.