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Fencer Vulns
high 8.8

CVE-2022-49114 json

scsi: libfc: Fix use after free in fc_exch_abts_resp()

published 2025-02-26 20 mo ago modified 2026-08-05 3 mo ago also EUVD-2022-55099

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits
0
none known

Summary

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

scsi: libfc: Fix use after free in fc_exch_abts_resp()

fc_exch_release(ep) will decrease the ep's reference count. When the reference count reaches zero, it is freed. But ep is still used in the following code, which will lead to a use after free.

Return after the fc_exch_release() call to avoid use after free.

Patch / fix

  • Linux Linux 4.9.311, 4.14.276, 4.19.238, 5.4.189, 5.10.111, 5.15.34, 5.16.20, 5.17.3, 5.18
  • linux Debian 14, Debian 13, Debian 12 5.17.3-1

debian advisories DEBIAN-CVE-2022-49114

  • linux Ubuntu 18.04 LTS 4.15.0-189.200
  • linux Ubuntu 20.04 LTS 5.4.0-117.132
  • linux Ubuntu 22.04 LTS 5.15.0-37.39
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1137.148
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1078.84
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1011.14
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1078.84
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1008.12

ubuntu advisories UBUNTU-CVE-2022-49114

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 5.14.0-284.11.1.el9_2
  • perf RHEL 9 5.14.0-284.11.1.el9_2
  • rtla RHEL 9 5.14.0-284.11.1.el9_2
  • bpftool RHEL 9 7.0.0-284.11.1.el9_2
  • kernel-64k RHEL 9 5.14.0-284.11.1.el9_2
  • kernel-core RHEL 9 5.14.0-284.11.1.el9_2
  • kernel-tools RHEL 9 5.14.0-284.11.1.el9_2
  • python3-perf RHEL 9 5.14.0-284.11.1.el9_2

red hat advisories RHSA-2025:10193RHSA-2025:10179RHSA-2025:10174RHSA-2025:10009RHSA-2025:10005RHSA-2023:2458

  • kernel-64kb SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS, Enterprise Storage 7.1 5.3.18-150300.59.201.1
  • kernel-syms SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.59.201.1
  • kernel-source SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.59.201.1
  • kernel-default SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +5 more 5.3.18-150300.59.201.1
  • kernel-preempt SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.59.201.1
  • kernel-obs-build SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.59.201.1
  • kernel-default-base SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +3 more 5.3.18-150300.59.201.1.150300.18.120.1
  • kernel-64kb SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS, SLE High Performance Computing 15 SP5-ESPOS 5.14.21-150500.55.100.1

suse advisories SUSE-SU-2025:1293-1SUSE-SU-2025:1263-1SUSE-SU-2025:1241-1SUSE-SU-2025:1194-1SUSE-SU-2025:1183-1SUSE-SU-2025:1176-1

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-2022-49114 updated cvss 7.0

kernel: scsi: libfc: Fix use after free in fc_exch_abts_resp()

  • 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: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +6 more Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: no fix available
  • Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-284.11.1.el9_2, rtla 5.14.0-284.11.1.el9_2, kernel-devel-matched 5.14.0-284.11.1.el9_2, kernel-64k-devel-matched 5.14.0-284.11.1.el9_2, kernel-debug-devel-matched 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, +5 more
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.136.1.el9_0, kernel-devel-matched 5.14.0-70.136.1.el9_0, kernel-debug-devel-matched 5.14.0-70.136.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.136.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.136.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.136.1.el9_0, +2 more
    fixed: vendor fix RHSA-2025:10174
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-477.10.1.el8_8, kernel 4.18.0-477.10.1.el8_8, bpftool 4.18.0-477.10.1.el8_8, kernel-core 4.18.0-477.10.1.el8_8, kernel-tools 4.18.0-477.10.1.el8_8, python3-perf 4.18.0-477.10.1.el8_8, +15 more
    fixed: vendor fix RHSA-2023:2951
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.0.0-284.11.1.el9_2, kernel 5.14.0-284.11.1.el9_2, kernel-64k 5.14.0-284.11.1.el9_2, kernel-core 5.14.0-284.11.1.el9_2, kernel-tools 5.14.0-284.11.1.el9_2, python3-perf 5.14.0-284.11.1.el9_2, +28 more
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.156.1.el8_2, kernel 4.18.0-193.156.1.el8_2, bpftool 4.18.0-193.156.1.el8_2, kernel-core 4.18.0-193.156.1.el8_2, kernel-tools 4.18.0-193.156.1.el8_2, python3-perf 4.18.0-193.156.1.el8_2, +8 more
    fixed: vendor fix RHSA-2025:10179
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.161.1.el8_4, kernel 4.18.0-305.161.1.el8_4, bpftool 4.18.0-305.161.1.el8_4, kernel-core 4.18.0-305.161.1.el8_4, kernel-tools 4.18.0-305.161.1.el8_4, python3-perf 4.18.0-305.161.1.el8_4, +8 more
    fixed: vendor fix RHSA-2025:10005
show 7 more
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.150.1.el8_6, kernel 4.18.0-372.150.1.el8_6, bpftool 4.18.0-372.150.1.el8_6, kernel-core 4.18.0-372.150.1.el8_6, kernel-tools 4.18.0-372.150.1.el8_6, python3-perf 4.18.0-372.150.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.150.1.el8_6, kernel 4.18.0-372.150.1.el8_6, bpftool 4.18.0-372.150.1.el8_6, kernel-core 4.18.0-372.150.1.el8_6, kernel-tools 4.18.0-372.150.1.el8_6, python3-perf 4.18.0-372.150.1.el8_6, +15 more
    fixed: vendor fix RHSA-2025:10009
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.136.1.el9_0, bpftool 5.14.0-70.136.1.el9_0, kernel-core 5.14.0-70.136.1.el9_0, kernel-tools 5.14.0-70.136.1.el9_0, python3-perf 5.14.0-70.136.1.el9_0, kernel-modules 5.14.0-70.136.1.el9_0, +14 more
    fixed: vendor fix RHSA-2025:10174
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.150.1.el8_6, kernel 4.18.0-372.150.1.el8_6, bpftool 4.18.0-372.150.1.el8_6, kernel-core 4.18.0-372.150.1.el8_6, kernel-tools 4.18.0-372.150.1.el8_6, python3-perf 4.18.0-372.150.1.el8_6, +8 more
    fixed: vendor fix RHSA-2025:10009
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.10.1.el8_8
    fixed: vendor fix RHSA-2023:2951
  • Red Hat Enterprise Linux CRB (v. 9) kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.11.1.el9_2
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-kvm 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-core 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-modules 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-debug-kvm 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-debug-core 5.14.0-70.136.1.rt21.208.el9_0, +4 more Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-core 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-modules 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-debug-core 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-debug-modules 5.14.0-70.136.1.rt21.208.el9_0, kernel-rt-modules-extra 5.14.0-70.136.1.rt21.208.el9_0, +2 more
    fixed: vendor fix RHSA-2025:10193
  • Red Hat Enterprise Linux 10 kernel
    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
20 mo ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
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

  • 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.