arm-trusted-firmware — security advisory
Trusted Firmware-A (TF-A) before 2.10 has a potential read out-of-bounds in the SDEI service. The input parameter passed in register x1 is not validated well enough in the function sdei_interrupt_bind. The parameter is passed to a call to plat_ic_get_interrupt_type. It can be any arbitrary value passing checks in the function plat_ic_is_sgi. A compromised Normal World (Linux kernel) can enable a root-privileged attacker to issue arbitrary SMC calls. Using this primitive, he can control the content of registers x0 through x6, which are used to send parameters to TF-A. Out-of-bounds addresses can be read in the context of TF-A (EL3). Because the read value is never returned to non-secure memory or in registers, no leak is possible. An attacker can still crash TF-A, however.
- Products
- arm-trusted-firmware
- Affected versions
- Not specified
- Fixed versions
- 2.8.14-r0
- CVEs
- CVE-2023-49100
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:02 UTC · Revision 1
Source evidence
Trusted Firmware-A (TF-A) before 2.10 has a potential read out-of-bounds in the SDEI service. The input parameter passed in register x1 is not validated well enough in the function sdei_interrupt_bind. The parameter is passed to a call to plat_ic_get_interrupt_type. It can be any arbitrary value passing checks in the function plat_ic_is_sgi. A compromised Normal World (Linux kernel) can enable a root-privileged attacker to issue arbitrary SMC calls. Using this primitive, he can control the content of registers x0 through x6, which are used to send parameters to TF-A. Out-of-bounds addresses can be read in the context of TF-A (EL3). Because the read value is never returned to non-secure memory or in registers, no leak is possible. An attacker can still crash TF-A, however.
osv:ALPINE-CVE-2023-49100
arm-trusted-firmware
Fixed versions: 2.8.14-r0
arm-trusted-firmware
Fixed versions: 2.8.14-r0
arm-trusted-firmware
Fixed versions: 2.8.14-r0
Complete source record
{
"id": "0cc9e063de64c8309d4be40523cd3b88da4ea0339ea366369906179ca0b76273",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-49100",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2023-49100",
"summary": "Trusted Firmware-A (TF-A) before 2.10 has a potential read out-of-bounds in the SDEI service. The input parameter passed in register x1 is not validated well enough in the function sdei_interrupt_bind. The parameter is passed to a call to plat_ic_get_interrupt_type. It can be any arbitrary value passing checks in the function plat_ic_is_sgi. A compromised Normal World (Linux kernel) can enable a root-privileged attacker to issue arbitrary SMC calls. Using this primitive, he can control the content of registers x0 through x6, which are used to send parameters to TF-A. Out-of-bounds addresses can be read in the context of TF-A (EL3). Because the read value is never returned to non-secure memory or in registers, no leak is possible. An attacker can still crash TF-A, however.",
"evidence": "osv:ALPINE-CVE-2023-49100",
"products": [
{
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"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
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],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2023-49100",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
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"events": [
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{
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"purl": "pkg:apk/alpine/arm-trusted-firmware?arch=source",
"ecosystem": "Alpine:v3.18"
},
"database_specific": {
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},
"ecosystem_specific": {}
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{
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"package": {
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"ecosystem": "Alpine:v3.19"
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"package": {
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"ecosystem": "Alpine:v3.20"
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"database_specific": {
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],
"modified": "2026-10-26T17:17:58.654573799Z",
"provider": "osv",
"upstream": [
"CVE-2023-49100"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2023-49100"
]
},
"related_cves": [
{
"value": "CVE-2023-49100",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 454550,
"published_at": "2024-02-21T16:15:49.457+00:00"
}