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Fencer Vulns
critical 9.1

CVE-2022-48828 in the critical feed json

NFSD: Fix ia_size underflow

published 2024-07-16 2 y ago modified 2026-10-14 25 d ago also EUVD-2022-53707

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

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

NFSD: Fix ia_size underflow

iattr::ia_size is a loff_t, which is a signed 64-bit type. NFSv3 and NFSv4 both define file size as an unsigned 64-bit type. Thus there is a range of valid file size values an NFS client can send that is already larger than Linux can handle.

Currently decode_fattr4() dumps a full u64 value into ia_size. If that value happens to be larger than S64_MAX, then ia_size underflows. I'm about to fix up the NFSv3 behavior as well, so let's catch the underflow in the common code path: nfsd_setattr().

Patch / fix

  • Linux Linux 5.4.295, 5.10.220, 5.15.24, 5.16.10, 5.17
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1.1
  • linux Debian 14, Debian 13, Debian 12 5.16.10-1

debian advisories DEBIAN-CVE-2022-48828

  • linux-intel-iotg-5.15 Ubuntu 20.04 LTS 5.15.0-1008.11~20.04.1

ubuntu advisories UBUNTU-CVE-2022-48828

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 8.2 AUS 4.18.0-193.141.1.el8_2
  • perf RHEL 8.2 AUS 4.18.0-193.141.1.el8_2
  • bpftool RHEL 8.2 AUS 4.18.0-193.141.1.el8_2
  • kernel-core RHEL 8.2 AUS 4.18.0-193.141.1.el8_2
  • kernel-tools RHEL 8.2 AUS 4.18.0-193.141.1.el8_2
  • python3-perf RHEL 8.2 AUS 4.18.0-193.141.1.el8_2
  • kernel-modules RHEL 8.2 AUS 4.18.0-193.141.1.el8_2
  • kernel-debug-core RHEL 8.2 AUS 4.18.0-193.141.1.el8_2

red hat advisories RHSA-2024:6992RHSA-2024:5281RHSA-2024:5282RHSA-2024:5266

  • 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
  • kernel-syms SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.225.1
  • kernel-source SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.225.1
  • kernel-default SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +2 more 4.12.14-122.225.1
  • kernel-obs-build SLE Software Development Kit 12 SP5 4.12.14-122.225.1
  • dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.73.1

suse advisories SUSE-SU-2024:2947-1SUSE-SU-2024:2940-1SUSE-SU-2024:2939-1SUSE-SU-2024:2929-1SUSE-SU-2024:2902-1SUSE-SU-2024:2901-1

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-2022-48828 updated cvss 5.5

kernel: NFSD: Fix ia_size underflow

  • 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 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more
    affected: workaround, no fix available
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.141.1.el8_2, kernel 4.18.0-193.141.1.el8_2, bpftool 4.18.0-193.141.1.el8_2, kernel-core 4.18.0-193.141.1.el8_2, kernel-tools 4.18.0-193.141.1.el8_2, python3-perf 4.18.0-193.141.1.el8_2, +8 more
    fixed: vendor fix RHSA-2024:6992
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.138.1.el8_4, kernel 4.18.0-305.138.1.el8_4, bpftool 4.18.0-305.138.1.el8_4, kernel-core 4.18.0-305.138.1.el8_4, kernel-tools 4.18.0-305.138.1.el8_4, python3-perf 4.18.0-305.138.1.el8_4, +8 more
    fixed: vendor fix RHSA-2024:5266
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.118.1.el8_6, kernel 4.18.0-372.118.1.el8_6, bpftool 4.18.0-372.118.1.el8_6, kernel-core 4.18.0-372.118.1.el8_6, kernel-tools 4.18.0-372.118.1.el8_6, python3-perf 4.18.0-372.118.1.el8_6, +8 more
    fixed: vendor fix RHSA-2024:5281
  • Red Hat Enterprise Linux BaseOS E4S (v.8.4) perf 4.18.0-305.138.1.el8_4, kernel 4.18.0-305.138.1.el8_4, bpftool 4.18.0-305.138.1.el8_4, kernel-core 4.18.0-305.138.1.el8_4, kernel-tools 4.18.0-305.138.1.el8_4, python3-perf 4.18.0-305.138.1.el8_4, +9 more
    fixed: vendor fix RHSA-2024:5266
  • Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.118.1.el8_6, kernel 4.18.0-372.118.1.el8_6, bpftool 4.18.0-372.118.1.el8_6, kernel-core 4.18.0-372.118.1.el8_6, kernel-tools 4.18.0-372.118.1.el8_6, python3-perf 4.18.0-372.118.1.el8_6, +15 more
    fixed: vendor fix RHSA-2024:5281
  • Red Hat Enterprise Linux BaseOS TUS (v.8.4) perf 4.18.0-305.138.1.el8_4, kernel 4.18.0-305.138.1.el8_4, bpftool 4.18.0-305.138.1.el8_4, kernel-core 4.18.0-305.138.1.el8_4, kernel-tools 4.18.0-305.138.1.el8_4, python3-perf 4.18.0-305.138.1.el8_4, +8 more
    fixed: vendor fix RHSA-2024:5266
show 3 more
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.118.1.el8_6, kernel 4.18.0-372.118.1.el8_6, bpftool 4.18.0-372.118.1.el8_6, kernel-core 4.18.0-372.118.1.el8_6, kernel-tools 4.18.0-372.118.1.el8_6, python3-perf 4.18.0-372.118.1.el8_6, +8 more
    fixed: vendor fix RHSA-2024:5281
  • Red Hat Enterprise Linux NFV TUS (v.8.4) kernel-rt 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-kvm 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-core 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-modules 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-debug-kvm 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-debug-core 4.18.0-305.138.1.rt7.214.el8_4, +4 more Red Hat Enterprise Linux RT TUS (v.8.4) kernel-rt 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-core 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-modules 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-debug-core 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-debug-modules 4.18.0-305.138.1.rt7.214.el8_4, kernel-rt-modules-extra 4.18.0-305.138.1.rt7.214.el8_4, +2 more
    fixed: vendor fix RHSA-2024:5282
  • Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux BaseOS AUS (v.8.6) kernel-headers 4.18.0-372.118.1.el8_6, kernel-cross-headers 4.18.0-372.118.1.el8_6 Red Hat Enterprise Linux BaseOS E4S (v.8.6) kernel-headers 4.18.0-372.118.1.el8_6, kernel-cross-headers 4.18.0-372.118.1.el8_6 Red Hat Enterprise Linux BaseOS TUS (v.8.6) kernel-headers 4.18.0-372.118.1.el8_6, kernel-cross-headers 4.18.0-372.118.1.el8_6
    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 ICSA-24-102-01 updated cvss 7.8

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    affected: mitigation, no fix available

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-25-226-07 updated

Siemens Third-Party Components in SINEC OS

  • Siemens RUGGEDCOM RST2428P (6GK6242-6PA00) Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family
    not affected

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Linux Linux
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound)
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.