kernel: Use after free in f2fs_available_memory
Published Jun 15, 2022
7.8
HIGHCVSS 3.1
EPSS 0.12%
Description
In TBD of TBD, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-219513976References: Upstream kernel
Affected products
- Vendor n/a Product Android Defaultn/a
- Version Android kernelStatusaffectedConstraints-
- 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 | Android | n/a |
|
No data.
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
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| 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 |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Mitigation for this issue is either not available or the currently available options does not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:C/I:C/A:C
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 4, 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 4, 2026 | 0.12% (0.00116) | 1.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.11% (0.00115) | 1.82th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.03% (0.00026) | 4.31th | 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 | 1.04% (0.01036) | 43.31th | v2 (v2022.01.01) |
| Dec 21, 2022 | 1.04% (0.01036) | 42.32th | v2 (v2022.01.01) |
| Jun 24, 2022 | 1.04% (0.01036) | 40.28th | v2 (v2022.01.01) |
| Jun 16, 2022 | 2.56% (0.02559) | 80.63th | v2 (v2022.01.01) |
References (6)
- https://access.redhat.com/security/cve/CVE-2022-20148 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2122497 Issue Tracking
- https://github.com/torvalds/linux/commit/5429c9dbc9025f9a166f64e22e3a69c94fd5b29b
- https://nvd.nist.gov/vuln/detail/CVE-2022-20148
- https://source.android.com/security/bulletin/pixel/2022-06-01 x_refsource_MISCVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2022-20148
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2022-20148 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2122497 | Issue Tracking | |
| https://github.com/torvalds/linux/commit/5429c9dbc9025f9a166f64e22e3a69c94fd5b29b | ||
| https://nvd.nist.gov/vuln/detail/CVE-2022-20148 | ||
| https://source.android.com/security/bulletin/pixel/2022-06-01 | x_refsource_MISCVendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2022-20148 |
Change history (0)
No recorded changes yet.