net: bridge: vlan: fix memory leak in __allowed_ingress
Published Jun 20, 2024
7.5
HIGHCVSS 3.1
EPSS 1.13%
Description
When using per-vlan state, if vlan snooping and stats are disabled, untagged or priority-tagged ingress frame will go to check pvid state. If the port state is forwarding and the pvid state is not learning/forwarding, untagged or priority-tagged frame will be dropped but skb memory is not freed. Should free skb when __allowed_ingress returns false.
Affected products
-
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
-
- Version 5.6StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<5.6
- Version 5.10.96StatusunaffectedConstraints<=5.10.*
- Version 5.15.19StatusunaffectedConstraints<=5.15.*
- Version 5.16.5StatusunaffectedConstraints<=5.16.*
- Version 5.17StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
- ≥ 5.6 · < 5.10.96
- ≥ 5.11 · < 5.15.19
- ≥ 5.16 · < 5.16.5
- 5.17
-
- Version 5.6StatusaffectedConstraints-
- Version
-
- Version a580c76d534cStatusaffectedConstraints<14be8d448fca
- Version a580c76d534cStatusaffectedConstraints<446ff1fc37c7
- Version a580c76d534cStatusaffectedConstraints<c5e216e880fa
- Version a580c76d534cStatusaffectedConstraints<fd20d9738395
- 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 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux Kernel | n/a |
| |||||||||||||||
| Linux | Linux Kernel | n/a |
|
Red Hat Enterprise Linux 6
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel
Out of support scope
Red Hat Enterprise Linux 7
kernel-rt
Out of support scope
Red Hat Enterprise Linux 8
kernel
Affected
Red Hat Enterprise Linux 8
kernel-rt
Affected
Red Hat Enterprise Linux 9
kernel
Affected
Red Hat Enterprise Linux 9
kernel-rt
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Out of support scope | n/a |
| Red Hat Enterprise Linux 8 | kernel | Affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Jun 26, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2024–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (5 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.13% (0.01128) | 65.17th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.13% (0.01128) | 62.02th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.24% (0.00235) | 44.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00045) | 17.70th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.04% (0.00045) | 15.58th | v3 (v2023.03.01) |
References (9)
- https://access.redhat.com/security/cve/CVE-2022-48748 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2293311 Issue Tracking
- https://git.kernel.org/stable/c/14be8d448fca6fe7b2a413831eedd55aef6c6511 Patch
- https://git.kernel.org/stable/c/446ff1fc37c74093e81db40811a07b5a19f1d797 Patch
- https://git.kernel.org/stable/c/c5e216e880fa6f2cd9d4a6541269377657163098 Patch
- https://git.kernel.org/stable/c/fd20d9738395cf8e27d0a17eba34169699fccdff Patch
- https://lore.kernel.org/linux-cve-announce/2024062004-CVE-2022-48748-3e75@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2022-48748
- https://www.cve.org/CVERecord?id=CVE-2022-48748
Change history (0)
No recorded changes yet.