CVE-2023-54114
Estado: AplazadaSin puntuar—
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():
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.
Use correct mac_offset to restore mac_header and get rid of nhoff.
Detalles técnicos trazas, registros y código del informe original
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
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 panicCVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.22%
- Percentil entre todas las CVEs puntuadas: 11
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/02b20e0bc0c2628539e9e518dc342787c3332de2
- https://git.kernel.org/stable/c/2f88c8d38ecf5ed0273f99a067246899ba499eb2
- https://git.kernel.org/stable/c/435855b0831b351cb72cb38369ee33122ce9574c
- https://git.kernel.org/stable/c/6fbedf987b6b8ed54a50e2205d998eb2c8be72f9
- https://git.kernel.org/stable/c/c83b49383b595be50647f0c764a48c78b5f3c4f8
- https://git.kernel.org/stable/c/cb38e62922aa3991793344b5a5870e7291c74a44
- https://git.kernel.org/stable/c/cdd8160dcda1fed2028a5f96575a84afc23aff7d
- https://git.kernel.org/stable/c/d2309e0cb27b6871b273fbc1725e93be62570d86
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-54114",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "c411ed854584a71b0e86ac3019b60e4789d88086",
"lessThan": "2f88c8d38ecf5ed0273f99a067246899ba499eb2",
"versionType": "git"
},
{
"status": "affected",
"version": "c411ed854584a71b0e86ac3019b60e4789d88086",
"lessThan": "d2309e0cb27b6871b273fbc1725e93be62570d86",
"versionType": "git"
},
{
"status": "affected",
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"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",
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"versionType": "git"
},
{
"status": "affected",
"version": "c411ed854584a71b0e86ac3019b60e4789d88086",
"lessThan": "c83b49383b595be50647f0c764a48c78b5f3c4f8",
"versionType": "git"
}
],
"programFiles": [
"net/nsh/nsh.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.14.316",
"versionType": "semver",
"lessThanOrEqual": "4.14.*"
},
{
"status": "unaffected",
"version": "4.19.284",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.244",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.181",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.113",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.30",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.3.4",
"versionType": "semver",
"lessThanOrEqual": "6.3.*"
},
{
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/nsh/nsh.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-12-24T13:16:13.323",
"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"
}
],
"vulnStatus": "Deferred",
"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->mac_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->network_header - nhoff to reset mac_header\nin skb_gso_error_unwind() if inner-layer protocol gso fails.\nHowever, skb->network_header may be reset by inner-layer protocol\ngso function e.g. mpls_gso_segment. skb->mac_header reset by the\ninaccurate network_header will be larger than skb headroom.\n\nnsh_gso_segment\n nhoff = skb->network_header - skb->mac_header;\n __skb_pull(skb,nsh_len)\n skb_mac_gso_segment\n mpls_gso_segment\n skb_reset_network_header(skb);//skb->network_header+=nsh_len\n return -EINVAL;\n skb_gso_error_unwind\n skb_push(skb, nsh_len);\n skb->mac_header = skb->network_header - nhoff;\n // skb->mac_header > skb->headroom, cause skb_push panic\n\nUse correct mac_offset to restore mac_header and get rid of nhoff."
}
],
"lastModified": "2026-06-17T06:46:49.610",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}