CVE-2022-48654 (GCVE-0-2022-48654)
Vulnerability from cvelistv5 – Published: 2024-04-28 13:00 – Updated: 2026-08-05 08:51
VLAI
EPSS
VEX
Title
netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find()
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find()
nf_osf_find() incorrectly returns true on mismatch, this leads to
copying uninitialized memory area in nft_osf which can be used to leak
stale kernel stack data to userspace.
Severity
7.1 (High)
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-16 20:35 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
22c7652cdaa8cd33ce78bacceb4e826a3f795873 , < 721ea8ac063d70c2078c4e762212705de6151764
(git)
Affected: 22c7652cdaa8cd33ce78bacceb4e826a3f795873 , < 5d75fef3e61e797fab5c3fbba88caa74ab92ad47 (git) Affected: 22c7652cdaa8cd33ce78bacceb4e826a3f795873 , < 816eab147e5c6f6621922b8515ad9010ceb1735e (git) Affected: 22c7652cdaa8cd33ce78bacceb4e826a3f795873 , < 633c81c0449663f57d4138326d036dc6cfad674e (git) Affected: 22c7652cdaa8cd33ce78bacceb4e826a3f795873 , < 559c36c5a8d730c49ef805a72b213d3bba155cc8 (git) |
guessed | |
| Linux | Linux |
Affected:
5.2
Unaffected: 0 , < 5.2 (semver) Unaffected: 5.4.215 , ≤ 5.4.* (semver) Unaffected: 5.10.146 , ≤ 5.10.* (semver) Unaffected: 5.15.71 , ≤ 5.15.* (semver) Unaffected: 5.19.12 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix) |
guessed |
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"type": "Primary"
}
]
}
},
"redhat_vex": {
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"current_release_date": "2026-08-04T23:01:32+00:00",
"cve": "CVE-2022-48654",
"id": "CVE-2022-48654",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_not_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48654.json",
"version": "3"
},
"vulnrichment": {
"containers": {
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"providerMetadata": {
"dateUpdated": "2024-08-03T15:17:55.613Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"url": "https://git.kernel.org/stable/c/816eab147e5c6f6621922b8515ad9010ceb1735e"
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"attackVector": "LOCAL",
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"baseScore": 5.3,
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"confidentialityImpact": "LOW",
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"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"options": [
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"role": "CISA Coordinator",
"timestamp": "2024-07-16T20:35:56.717348Z",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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"version": "5.2"
},
{
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"status": "unaffected",
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"status": "unaffected",
"version": "5.4.215",
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},
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"status": "unaffected",
"version": "5.10.146",
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"status": "unaffected",
"version": "5.15.71",
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},
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"status": "unaffected",
"version": "5.19.12",
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},
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"version": "6.0",
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}
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},
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"value": "AV:L - The vulnerable path is reached by configuring an nftables osf expression via NETLINK_NETFILTER and then evaluating it on a TCP SYN; nftables/netlink is Local per kernel guidance, not a remote packet-only bug.\nAC:L - An attacker can create an osf rule with no matching fingerprints (empty global finger list) and send a local TCP SYN so nf_osf_find() always takes the bogus-true path; no race or attacker-uncontrollable condition is required.\nPR:L - nfnetlink gates on CAP_NET_ADMIN via netlink_net_capable() against the socket\u2019s network-namespace user_ns, which an unprivileged user obtains with unshare -Urn, so this is Low rather than real-root High.\nUI:N - The attacker configures the osf expression and triggers evaluation with their own TCP SYN; no separate victim action is required.\nS:U - Impact stays within the local host kernel authority (stack/pointer disclosure or oops); this is not a VM escape, IOMMU bypass, or other cross-boundary effect.\nC:H - On mismatch, uninitialized const char * genre/version are passed to strscpy/snprintf and up to NFT_OSF_MAXGENRELEN bytes from the wild addresses are copied into an nft register visible to userspace, enabling kernel memory disclosure.\nI:N - The bug only reads through uninitialized pointers and copies into the attacker-controlled nft register path; there is no OOB write, UAF, or control-flow hijack primitive.\nA:H - Dereferencing uninitialized genre/version pointers commonly faults on unmapped addresses and oopses/panics the kernel, which is High availability impact under kernel CVSS guidance."
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}
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"cveId": "CVE-2022-48654",
"datePublished": "2024-04-28T13:00:56.564Z",
"dateReserved": "2024-02-25T13:44:28.317Z",
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"state": "PUBLISHED"
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}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.