CVE-2023-54114 (GCVE-0-2023-54114)
Vulnerability from cvelistv5 – Published: 2025-12-24 13:06 – Updated: 2026-05-11 19:55
VLAI
EPSS
VEX
Title
net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()
As the call trace shows, skb_panic was caused by wrong skb->mac_header
in nsh_gso_segment():
invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 3 PID: 2737 Comm: syz Not tainted 6.3.0-next-20230505 #1
RIP: 0010:skb_panic+0xda/0xe0
call Trace:
skb_push+0x91/0xa0
nsh_gso_segment+0x4f3/0x570
skb_mac_gso_segment+0x19e/0x270
__skb_gso_segment+0x1e8/0x3c0
validate_xmit_skb+0x452/0x890
validate_xmit_skb_list+0x99/0xd0
sch_direct_xmit+0x294/0x7c0
__dev_queue_xmit+0x16f0/0x1d70
packet_xmit+0x185/0x210
packet_snd+0xc15/0x1170
packet_sendmsg+0x7b/0xa0
sock_sendmsg+0x14f/0x160
The root cause is:
nsh_gso_segment() use skb->network_header - nhoff to reset mac_header
in skb_gso_error_unwind() if inner-layer protocol gso fails.
However, skb->network_header may be reset by inner-layer protocol
gso function e.g. mpls_gso_segment. skb->mac_header reset by the
inaccurate network_header will be larger than skb headroom.
nsh_gso_segment
nhoff = skb->network_header - skb->mac_header;
__skb_pull(skb,nsh_len)
skb_mac_gso_segment
mpls_gso_segment
skb_reset_network_header(skb);//skb->network_header+=nsh_len
return -EINVAL;
skb_gso_error_unwind
skb_push(skb, nsh_len);
skb->mac_header = skb->network_header - nhoff;
// skb->mac_header > skb->headroom, cause skb_push panic
Use correct mac_offset to restore mac_header and get rid of nhoff.
Severity
No CVSS data available.
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
c411ed854584a71b0e86ac3019b60e4789d88086 , < 2f88c8d38ecf5ed0273f99a067246899ba499eb2
(git)
Affected: c411ed854584a71b0e86ac3019b60e4789d88086 , < d2309e0cb27b6871b273fbc1725e93be62570d86 (git) Affected: c411ed854584a71b0e86ac3019b60e4789d88086 , < 435855b0831b351cb72cb38369ee33122ce9574c (git) Affected: c411ed854584a71b0e86ac3019b60e4789d88086 , < 02b20e0bc0c2628539e9e518dc342787c3332de2 (git) Affected: c411ed854584a71b0e86ac3019b60e4789d88086 , < cdd8160dcda1fed2028a5f96575a84afc23aff7d (git) Affected: c411ed854584a71b0e86ac3019b60e4789d88086 , < 6fbedf987b6b8ed54a50e2205d998eb2c8be72f9 (git) Affected: c411ed854584a71b0e86ac3019b60e4789d88086 , < cb38e62922aa3991793344b5a5870e7291c74a44 (git) Affected: c411ed854584a71b0e86ac3019b60e4789d88086 , < c83b49383b595be50647f0c764a48c78b5f3c4f8 (git) |
guessed | |
| Linux | Linux |
Affected:
4.14
Unaffected: 0 , < 4.14 (semver) Unaffected: 4.14.316 , ≤ 4.14.* (semver) Unaffected: 4.19.284 , ≤ 4.19.* (semver) Unaffected: 5.4.244 , ≤ 5.4.* (semver) Unaffected: 5.10.181 , ≤ 5.10.* (semver) Unaffected: 5.15.113 , ≤ 5.15.* (semver) Unaffected: 6.1.30 , ≤ 6.1.* (semver) Unaffected: 6.3.4 , ≤ 6.3.* (semver) Unaffected: 6.4 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
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{
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"programFiles": [
"net/nsh/nsh.c"
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},
{
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"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.316",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.284",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.244",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.181",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.113",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.30",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.3.*",
"status": "unaffected",
"version": "6.3.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.14.316",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.19.284",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
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"vulnerable": true
},
{
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.30",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.3.4",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.4",
"versionStartIncluding": "4.14",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()\n\nAs the call trace shows, skb_panic was caused by wrong skb-\u003emac_header\nin nsh_gso_segment():\n\ninvalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 3 PID: 2737 Comm: syz Not tainted 6.3.0-next-20230505 #1\nRIP: 0010:skb_panic+0xda/0xe0\ncall Trace:\n skb_push+0x91/0xa0\n nsh_gso_segment+0x4f3/0x570\n skb_mac_gso_segment+0x19e/0x270\n __skb_gso_segment+0x1e8/0x3c0\n validate_xmit_skb+0x452/0x890\n validate_xmit_skb_list+0x99/0xd0\n sch_direct_xmit+0x294/0x7c0\n __dev_queue_xmit+0x16f0/0x1d70\n packet_xmit+0x185/0x210\n packet_snd+0xc15/0x1170\n packet_sendmsg+0x7b/0xa0\n sock_sendmsg+0x14f/0x160\n\nThe root cause is:\nnsh_gso_segment() use skb-\u003enetwork_header - nhoff to reset mac_header\nin skb_gso_error_unwind() if inner-layer protocol gso fails.\nHowever, skb-\u003enetwork_header may be reset by inner-layer protocol\ngso function e.g. mpls_gso_segment. skb-\u003emac_header reset by the\ninaccurate network_header will be larger than skb headroom.\n\nnsh_gso_segment\n nhoff = skb-\u003enetwork_header - skb-\u003emac_header;\n __skb_pull(skb,nsh_len)\n skb_mac_gso_segment\n mpls_gso_segment\n skb_reset_network_header(skb);//skb-\u003enetwork_header+=nsh_len\n return -EINVAL;\n skb_gso_error_unwind\n skb_push(skb, nsh_len);\n skb-\u003emac_header = skb-\u003enetwork_header - nhoff;\n // skb-\u003emac_header \u003e skb-\u003eheadroom, cause skb_push panic\n\nUse correct mac_offset to restore mac_header and get rid of nhoff."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T19:55:44.834Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2f88c8d38ecf5ed0273f99a067246899ba499eb2"
},
{
"url": "https://git.kernel.org/stable/c/d2309e0cb27b6871b273fbc1725e93be62570d86"
},
{
"url": "https://git.kernel.org/stable/c/435855b0831b351cb72cb38369ee33122ce9574c"
},
{
"url": "https://git.kernel.org/stable/c/02b20e0bc0c2628539e9e518dc342787c3332de2"
},
{
"url": "https://git.kernel.org/stable/c/cdd8160dcda1fed2028a5f96575a84afc23aff7d"
},
{
"url": "https://git.kernel.org/stable/c/6fbedf987b6b8ed54a50e2205d998eb2c8be72f9"
},
{
"url": "https://git.kernel.org/stable/c/cb38e62922aa3991793344b5a5870e7291c74a44"
},
{
"url": "https://git.kernel.org/stable/c/c83b49383b595be50647f0c764a48c78b5f3c4f8"
}
],
"title": "net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-54114",
"datePublished": "2025-12-24T13:06:36.214Z",
"dateReserved": "2025-12-24T13:02:52.519Z",
"dateUpdated": "2026-05-11T19:55:44.834Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2023-54114",
"date": "2026-09-15",
"epss": "0.00214",
"percentile": "0.119"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2023-54114\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:13.323\",\"lastModified\":\"2026-06-17T06:46:49.610\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()\\n\\nAs the call trace shows, skb_panic was caused by wrong skb-\u003emac_header\\nin nsh_gso_segment():\\n\\ninvalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI\\nCPU: 3 PID: 2737 Comm: syz Not tainted 6.3.0-next-20230505 #1\\nRIP: 0010:skb_panic+0xda/0xe0\\ncall Trace:\\n skb_push+0x91/0xa0\\n nsh_gso_segment+0x4f3/0x570\\n skb_mac_gso_segment+0x19e/0x270\\n __skb_gso_segment+0x1e8/0x3c0\\n validate_xmit_skb+0x452/0x890\\n validate_xmit_skb_list+0x99/0xd0\\n sch_direct_xmit+0x294/0x7c0\\n __dev_queue_xmit+0x16f0/0x1d70\\n packet_xmit+0x185/0x210\\n packet_snd+0xc15/0x1170\\n packet_sendmsg+0x7b/0xa0\\n sock_sendmsg+0x14f/0x160\\n\\nThe root cause is:\\nnsh_gso_segment() use skb-\u003enetwork_header - nhoff to reset mac_header\\nin skb_gso_error_unwind() if inner-layer protocol gso fails.\\nHowever, skb-\u003enetwork_header may be reset by inner-layer protocol\\ngso function e.g. mpls_gso_segment. skb-\u003emac_header reset by the\\ninaccurate network_header will be larger than skb headroom.\\n\\nnsh_gso_segment\\n nhoff = skb-\u003enetwork_header - skb-\u003emac_header;\\n __skb_pull(skb,nsh_len)\\n skb_mac_gso_segment\\n mpls_gso_segment\\n skb_reset_network_header(skb);//skb-\u003enetwork_header+=nsh_len\\n return -EINVAL;\\n skb_gso_error_unwind\\n skb_push(skb, nsh_len);\\n skb-\u003emac_header = skb-\u003enetwork_header - nhoff;\\n // skb-\u003emac_header \u003e skb-\u003eheadroom, cause skb_push panic\\n\\nUse correct mac_offset to restore mac_header and get rid of nhoff.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/nsh/nsh.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"c411ed854584a71b0e86ac3019b60e4789d88086\",\"lessThan\":\"2f88c8d38ecf5ed0273f99a067246899ba499eb2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c411ed854584a71b0e86ac3019b60e4789d88086\",\"lessThan\":\"d2309e0cb27b6871b273fbc1725e93be62570d86\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c411ed854584a71b0e86ac3019b60e4789d88086\",\"lessThan\":\"435855b0831b351cb72cb38369ee33122ce9574c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c411ed854584a71b0e86ac3019b60e4789d88086\",\"lessThan\":\"02b20e0bc0c2628539e9e518dc342787c3332de2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c411ed854584a71b0e86ac3019b60e4789d88086\",\"lessThan\":\"cdd8160dcda1fed2028a5f96575a84afc23aff7d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c411ed854584a71b0e86ac3019b60e4789d88086\",\"lessThan\":\"6fbedf987b6b8ed54a50e2205d998eb2c8be72f9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c411ed854584a71b0e86ac3019b60e4789d88086\",\"lessThan\":\"cb38e62922aa3991793344b5a5870e7291c74a44\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c411ed854584a71b0e86ac3019b60e4789d88086\",\"lessThan\":\"c83b49383b595be50647f0c764a48c78b5f3c4f8\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/nsh/nsh.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.316\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.284\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.244\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.181\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.113\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.30\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.3.4\",\"lessThanOrEqual\":\"6.3.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.4\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/02b20e0bc0c2628539e9e518dc342787c3332de2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2f88c8d38ecf5ed0273f99a067246899ba499eb2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/435855b0831b351cb72cb38369ee33122ce9574c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6fbedf987b6b8ed54a50e2205d998eb2c8be72f9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c83b49383b595be50647f0c764a48c78b5f3c4f8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cb38e62922aa3991793344b5a5870e7291c74a44\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cdd8160dcda1fed2028a5f96575a84afc23aff7d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d2309e0cb27b6871b273fbc1725e93be62570d86\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-30T10:18:45+00:00",
"cve": "CVE-2023-54114",
"id": "CVE-2023-54114",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:fixed": "684",
"product_status:known_affected": "38",
"product_status:known_not_affected": "126",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Linux kernel: Denial of Service due to incorrect network packet processing in NSH module",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54114.json",
"version": "3"
}
}
}
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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.
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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.
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.
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