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Fencer Vulns
high 7.8

CVE-2022-48816 json

SUNRPC: lock against ->sock changing during sysfs read

published 2024-07-16 2 y ago modified 2026-10-03 36 d ago also EUVD-2022-53695

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

SUNRPC: lock against ->sock changing during sysfs read

->sock can be set to NULL asynchronously unless ->recv_mutex is held. So it is important to hold that mutex. Otherwise a sysfs read can trigger an oops. Commit 17f09d3f619a ("SUNRPC: Check if the xprt is connected before handling sysfs reads") appears to attempt to fix this problem, but it only narrows the race window.

Patch / fix

  • Linux Linux 5.10.271, 5.14, 5.15.209, 5.16.10, 5.17
  • linux Debian 14, Debian 13, Debian 12 5.16.10-1

debian advisories DEBIAN-CVE-2022-48816

  • linux Ubuntu 22.04 LTS 5.15.0-185.195
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1111.118
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1111.121
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1107.113
  • linux-ibm Ubuntu 22.04 LTS 5.15.0-1105.109
  • linux-kvm Ubuntu 22.04 LTS 5.15.0-1103.108
  • linux-azure Ubuntu 22.04 LTS 5.15.0-1116.125
  • linux-gkeop Ubuntu 22.04 LTS 5.15.0-1094.102

ubuntu advisories UBUNTU-CVE-2022-48816

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 RHEL 9.0 E4S 5.14.0-70.117.1.el9_0
  • perf RHEL 9.0 E4S 5.14.0-70.117.1.el9_0
  • bpftool RHEL 9.0 E4S 5.14.0-70.117.1.el9_0
  • kernel-core RHEL 9.0 E4S 5.14.0-70.117.1.el9_0
  • kernel-tools RHEL 9.0 E4S 5.14.0-70.117.1.el9_0
  • python3-perf RHEL 9.0 E4S 5.14.0-70.117.1.el9_0
  • kernel-modules RHEL 9.0 E4S 5.14.0-70.117.1.el9_0
  • kernel-zfcpdump RHEL 9.0 E4S 5.14.0-70.117.1.el9_0

red hat advisories RHSA-2024:6991RHSA-2024:6990

  • kernel-azure SLE Module for Public Cloud 15 SP5, openSUSE Leap 15.5 5.14.21-150500.33.63.1
  • kernel-syms-azure SLE Module for Public Cloud 15 SP5, openSUSE Leap 15.5 5.14.21-150500.33.63.1
  • kernel-source-azure SLE Module for Public Cloud 15 SP5, openSUSE Leap 15.5 5.14.21-150500.33.63.1
  • dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.73.1
  • kernel-64kb SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.73.1
  • kernel-syms SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.73.1
  • kernel-obs-qa openSUSE Leap 15.5 5.14.21-150500.55.73.1
  • kernel-source SLE Module for Development Tools 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.73.1

suse advisories SUSE-SU-2024:2947-1SUSE-SU-2024:2939-1SUSE-SU-2024:2929-1SUSE-SU-2024:2902-1SUSE-SU-2024:2894-1

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-2022-48816 updated cvss 5.5

kernel: SUNRPC: lock against ->sock changing during sysfs read

  • 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
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.117.1.el9_0, kernel-devel-matched 5.14.0-70.117.1.el9_0, kernel-debug-devel-matched 5.14.0-70.117.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.117.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.117.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.117.1.el9_0, +2 more Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.117.1.el9_0, bpftool 5.14.0-70.117.1.el9_0, kernel-core 5.14.0-70.117.1.el9_0, kernel-tools 5.14.0-70.117.1.el9_0, python3-perf 5.14.0-70.117.1.el9_0, kernel-modules 5.14.0-70.117.1.el9_0, +14 more
    fixed: vendor fix RHSA-2024:6991
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-kvm 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-core 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-modules 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-debug-kvm 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-debug-core 5.14.0-70.117.1.rt21.189.el9_0, +4 more Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-core 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-modules 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-debug-core 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-debug-modules 5.14.0-70.117.1.rt21.189.el9_0, kernel-rt-modules-extra 5.14.0-70.117.1.rt21.189.el9_0, +2 more
    fixed: vendor fix RHSA-2024:6990
  • Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    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
partial
Assessed
2 y ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 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 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Linux Linux

Classification

Weakness
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.