Linux Kernel IPv4 fib_semantics.c fib_nh_match out-of-bounds
Noroxi assessment
Priority: Monitor (action score 19/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 5.1% (FIRST EPSS); higher than 92.2% of all records.
- Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: bpftool (AlmaLinux:9) 7.0.0-284.11.1.el9_2; kernel (AlmaLinux:9) 5.14.0-284.11.1.el9_2; kernel-64k (AlmaLinux:9) 5.14.0-284.11.1.el9_2.
Low priority for now. Upgrade to bpftool (AlmaLinux:9) 7.0.0-284.11.1.el9_2; kernel (AlmaLinux:9) 5.14.0-284.11.1.el9_2; kernel-64k (AlmaLinux:9) 5.14.0-284.11.1.el9_2 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
A vulnerability classified as problematic has been found in Linux Kernel. This affects the function fib_nh_match of the file net/ipv4/fib_semantics.c of the component IPv4 Handler. The manipulation leads to out-of-bounds read. It is possible to initiate the attack remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-210357 was assigned to this vulnerability.
- BDU:2022-07358
- ALSA-2023:2148
- ALSA-2023:2458
- DLA-3244-1
- RHSA-2023:2148
- RHSA-2023:2458
- SUSE-SU-2022:3998-1
- SUSE-SU-2022:4072-1
- SUSE-SU-2023:0134-1
- SUSE-SU-2023:0152-1
- SUSE-SU-2023:0406-1
- SUSE-SU-2024:3983-1
- SUSE-SU-2024:3985-1
- SUSE-SU-2024:4081-1
- SUSE-SU-2024:4082-1
- SUSE-SU-2024:4103-1
- SUSE-SU-2024:4131-1
- SUSE-SU-2024:4140-1
- SUSE-SU-2024:4364-1
- Published
- Oct 8, 2022
- Updated
- Jun 17, 2026
- EPSS
- 5.1% · 92th percentile
- CWE
- CWE-119
Report tools
Action score
19
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 5.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 4.3
- CNA · VulDB
- 4.3
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux10.0
- fedoraproject fedora35
- fedoraproject fedora36
- fedoraproject fedora37
- linux linux kernelall versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.
Linux Kernel
- n/aaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:9 | bpftool | before 7.0.0-284.11.1.el9_2 | 7.0.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-core | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-debug | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-debug-core | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-debug-devel | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-debug-modules | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-devel | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-devel-matched | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-modules | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-modules-core | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-64k-modules-extra | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-abi-stablelists | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-core | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-cross-headers | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-debug | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-debug-core | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-debug-devel | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-debug-devel-matched | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
| AlmaLinux:9 | kernel-debug-modules | before 5.14.0-284.11.1.el9_2 | 5.14.0-284.11.1.el9_2 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
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- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:kernel-rt | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-core | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-core | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-devel | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-kvm | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-modules | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-modules-core | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-modules-extra | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-devel | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-kvm | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-modules | 5.14.0-284.11.1.rt14.296.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| debian:linux | 6.0.12-1 · Debian:12 | Package registry (OSV) |
| debian:linux-5.10 | 5.10.158-2~deb10u1 · Debian:10 | Package registry (OSV) |
| opensuse:kernel-azure | 5.14.21-150400.14.21.2 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:kernel-source-azure | 5.14.21-150400.14.21.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:kernel-syms-azure | 5.14.21-150400.14.21.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| red hat:kernel-rt | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-core | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-core | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-debuginfo | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-devel | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-kvm | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules-core | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules-extra | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debuginfo | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debuginfo-common-x86_64 | 0:5.14.0-284.11.1.rt14.296.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| suse:kernel-64kb | 5.14.21-150400.24.33.2 · SUSE:Linux Enterprise Module for Basesystem 15 SP4 | Package registry (OSV) |
+8
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (5 more)Show less
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/
- lore.kernel.org/netdev/20221005181257.8897-1-dsahern%40kernel.org/T/#u
- vuldb.com/?id.210357
Vendor advisories and official records. Exploit/PoC links are deliberately left out.