kernel: media: em28xx: initialize refcount before kref_get
Published Sep 19, 2022
7.8
HIGHCVSS 3.1
EPSS 0.25%
Description
A flaw use after free in the Linux kernel video4linux driver was found in the way user triggers em28xx_usb_probe() for the Empia 28xx based TV cards. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.
Affected products
- Vendor n/a Product Kernel Defaultn/a
- Version Linux kernel 5.18-rc1StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Kernel | n/a |
|
- ≥ 3.15 · < 4.14.295
- ≥ 4.15 · < 4.19.238
- ≥ 4.20 · < 5.4.189
- ≥ 5.5 · < 5.10.110
- ≥ 5.11 · < 5.15.33
- ≥ 5.16 · < 5.16.19
- ≥ 5.17 · < 5.17.2
No data.
Red Hat Enterprise Linux 8
kernel-0:4.18.0-477.10.1.el8_8
Fixed · RHSA-2023:2951
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-477.10.1.rt7.274.el8_8
Fixed · RHSA-2023:2736
Red Hat Enterprise Linux 8.6 Extended Update Support
kernel-0:4.18.0-372.93.1.el8_6
Fixed · RHSA-2024:0930
Red Hat Enterprise Linux 9
kernel-0:5.14.0-162.6.1.el9_1
Fixed · RHSA-2022:8267
Red Hat Enterprise Linux 9
kernel-0:5.14.0-162.6.1.el9_1
Fixed · RHSA-2022:8267
Red Hat Enterprise Linux 9
kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1
Fixed · RHSA-2022:7933
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
kernel-0:4.18.0-372.93.1.el8_6
Fixed · RHSA-2024:0930
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | kernel-0:4.18.0-477.10.1.el8_8 | Fixed | RHSA-2023:2951 |
| Red Hat Enterprise Linux 8 | kernel-rt-0:4.18.0-477.10.1.rt7.274.el8_8 | Fixed | RHSA-2023:2736 |
| Red Hat Enterprise Linux 8.6 Extended Update Support | kernel-0:4.18.0-372.93.1.el8_6 | Fixed | RHSA-2024:0930 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-162.6.1.el9_1 | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux 9 | kernel-0:5.14.0-162.6.1.el9_1 | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux 9 | kernel-rt-0:5.14.0-162.6.1.rt21.168.el9_1 | Fixed | RHSA-2022:7933 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | kernel-0:4.18.0-372.93.1.el8_6 | Fixed | RHSA-2024:0930 |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
To mitigate this issue, prevent module em28xx from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.25% (0.00254) | 15.40th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.24% (0.00236) | 14.34th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00027) | 4.59th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 23, 2023 | 0.89% (0.00885) | 27.85th | v2 (v2022.01.01) |
| Dec 30, 2022 | 1.40% (0.01404) | 71.40th | v2 (v2022.01.01) |
| Sep 20, 2022 | 0.89% (0.00885) | 26.35th | v2 (v2022.01.01) |
References (6)
- https://access.redhat.com/security/cve/CVE-2022-3239 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2127985 Issue Tracking
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c08eadca1bdfa099e20a32f8fa4b52b2f672236d Mailing ListPatchVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-3239
- https://security.netapp.com/advisory/ntap-20230214-0006/
- https://www.cve.org/CVERecord?id=CVE-2022-3239
Change history (0)
No recorded changes yet.