CVE-2026-23227
Estado: ModificadaAlta (7.8)—
In the Linux kernel, the following vulnerability has been resolved:
drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free
Exynos Virtual Display driver performs memory alloc/free operations without lock protection, which easily causes concurrency problem.
For example, use-after-free can occur in race scenario like this: ``` CPU0 CPU1 CPU2 ---- ---- ---- vidi_connection_ioctl() if (vidi->connection) // true drm_edid = drm_edid_alloc(); // alloc drm_edid ... ctx->raw_edid = drm_edid; ... drm_mode_getconnector() drm_helper_probe_single_connector_modes() vidi_get_modes() if (ctx->raw_edid) // true drm_edid_dup(ctx->raw_edid); if (!drm_edid) // false ... vidi_connection_ioctl() if (vidi->connection) // false drm_edid_free(ctx->raw_edid); // free drm_edid ... drm_edid_alloc(drm_edid->edid) kmemdup(edid); // UAF!! ... ```
Leer descripción completaMostrar menos
To prevent these vulns, at least in vidi_context, member variables related to memory alloc/free should be protected with ctx->lock.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 4
- Fecha de la puntuación: 5/10/2026
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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation75 % - Impacto principal
T1059Command and Scripting Interpreterexecution60 %
Vulnerabilidad use-after-free (CWE-416) en código de kernel local (AV:L/PR:L) explotable sin interacción (UI:N) para escalada de privilegios. La corrupción de memoria puede permitir ejecución de código en contexto del kernel.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-416
Referencias
- https://git.kernel.org/stable/c/0cd2c155740dbd00868ac5a8ae5d14cd6b9ed385
- https://git.kernel.org/stable/c/1b24d3e8792bcc050c70e8e0dea6b49c4fc63b13
- https://git.kernel.org/stable/c/52b330799e2d6f825ae2bb74662ec1b10eb954bb
- https://git.kernel.org/stable/c/56966a4cfa925ec24edb68ab652a740a7abe2c4d
- https://git.kernel.org/stable/c/60b75407c172e1f341a8a5097c5cbc97dbbdd893
- https://git.kernel.org/stable/c/92dd1f38d7db75374dcdaf54f1d79d67bffd54e5
- https://git.kernel.org/stable/c/9e1ef9396a1899925911b1729cb65665420268df
- https://git.kernel.org/stable/c/abfdf449fb3d7b42e85a1ad1c8694b768b1582f4
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-23227",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"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": "d3b62dbfc7b9bb013926f56db79b60f6c18c392f",
"lessThan": "56966a4cfa925ec24edb68ab652a740a7abe2c4d",
"versionType": "git"
},
{
"status": "affected",
"version": "d3b62dbfc7b9bb013926f56db79b60f6c18c392f",
"lessThan": "9e1ef9396a1899925911b1729cb65665420268df",
"versionType": "git"
},
{
"status": "affected",
"version": "d3b62dbfc7b9bb013926f56db79b60f6c18c392f",
"lessThan": "92dd1f38d7db75374dcdaf54f1d79d67bffd54e5",
"versionType": "git"
},
{
"status": "affected",
"version": "d3b62dbfc7b9bb013926f56db79b60f6c18c392f",
"lessThan": "1b24d3e8792bcc050c70e8e0dea6b49c4fc63b13",
"versionType": "git"
},
{
"status": "affected",
"version": "d3b62dbfc7b9bb013926f56db79b60f6c18c392f",
"lessThan": "abfdf449fb3d7b42e85a1ad1c8694b768b1582f4",
"versionType": "git"
},
{
"status": "affected",
"version": "d3b62dbfc7b9bb013926f56db79b60f6c18c392f",
"lessThan": "60b75407c172e1f341a8a5097c5cbc97dbbdd893",
"versionType": "git"
},
{
"status": "affected",
"version": "d3b62dbfc7b9bb013926f56db79b60f6c18c392f",
"lessThan": "0cd2c155740dbd00868ac5a8ae5d14cd6b9ed385",
"versionType": "git"
},
{
"status": "affected",
"version": "d3b62dbfc7b9bb013926f56db79b60f6c18c392f",
"lessThan": "52b330799e2d6f825ae2bb74662ec1b10eb954bb",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/exynos/exynos_drm_vidi.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.11",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.1",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/exynos/exynos_drm_vidi.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-02-18T16:22:32.467",
"references": [
{
"url": "https://git.kernel.org/stable/c/0cd2c155740dbd00868ac5a8ae5d14cd6b9ed385",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/1b24d3e8792bcc050c70e8e0dea6b49c4fc63b13",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/52b330799e2d6f825ae2bb74662ec1b10eb954bb",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/56966a4cfa925ec24edb68ab652a740a7abe2c4d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/60b75407c172e1f341a8a5097c5cbc97dbbdd893",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/92dd1f38d7db75374dcdaf54f1d79d67bffd54e5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9e1ef9396a1899925911b1729cb65665420268df",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/abfdf449fb3d7b42e85a1ad1c8694b768b1582f4",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free\n\nExynos Virtual Display driver performs memory alloc/free operations\nwithout lock protection, which easily causes concurrency problem.\n\nFor example, use-after-free can occur in race scenario like this:\n```\n\tCPU0\t\t\t\tCPU1\t\t\t\tCPU2\n\t----\t\t\t\t----\t\t\t\t----\n vidi_connection_ioctl()\n if (vidi->connection) // true\n drm_edid = drm_edid_alloc(); // alloc drm_edid\n ...\n ctx->raw_edid = drm_edid;\n ...\n\t\t\t\t\t\t\t\tdrm_mode_getconnector()\n\t\t\t\t\t\t\t\t drm_helper_probe_single_connector_modes()\n\t\t\t\t\t\t\t\t vidi_get_modes()\n\t\t\t\t\t\t\t\t if (ctx->raw_edid) // true\n\t\t\t\t\t\t\t\t drm_edid_dup(ctx->raw_edid);\n\t\t\t\t\t\t\t\t if (!drm_edid) // false\n\t\t\t\t\t\t\t\t ...\n\t\t\t\tvidi_connection_ioctl()\n\t\t\t\t if (vidi->connection) // false\n\t\t\t\t drm_edid_free(ctx->raw_edid); // free drm_edid\n\t\t\t\t ...\n\t\t\t\t\t\t\t\t drm_edid_alloc(drm_edid->edid)\n\t\t\t\t\t\t\t\t kmemdup(edid); // UAF!!\n\t\t\t\t\t\t\t\t ...\n```\n\nTo prevent these vulns, at least in vidi_context, member variables related\nto memory alloc/free should be protected with ctx->lock."
},
{
"lang": "es",
"value": "Se ha resuelto la siguiente vulnerabilidad en el kernel de Linux:\n\ndrm/exynos: vidi: usar ctx->lock para proteger las variables miembro de la estructura vidi_context relacionadas con la asignación/liberación de memoria\n\nEl controlador de pantalla virtual de Exynos realiza operaciones de asignación/liberación de memoria sin protección de bloqueo, lo que fácilmente causa un problema de concurrencia.\n\nPor ejemplo, el uso después de liberación puede ocurrir en un escenario de carrera como este:\n```\n\tCPU0\t\t\t\tCPU1\t\t\t\tCPU2\n\t----\t\t\t\t----\t\t\t\t----\n vidi_connection_ioctl()\n if (vidi->connection) // true\n drm_edid = drm_edid_alloc(); // alloc drm_edid\n ...\n ctx->raw_edid = drm_edid;\n ...\n\t\t\t\t\t\t\t\tdrm_mode_getconnector()\n\t\t\t\t\t\t\t\t drm_helper_probe_single_connector_modes()\n\t\t\t\t\t\t\t\t vidi_get_modes()\n\t\t\t\t\t\t\t\t if (ctx->raw_edid) // true\n\t\t\t\t\t\t\t\t drm_edid_dup(ctx->raw_edid);\n\t\t\t\t\t\t\t\t if (!drm_edid) // false\n\t\t\t\t\t\t\t\t ...\n\t\t\t\tvidi_connection_ioctl()\n\t\t\t\t if (vidi->connection) // false\n\t\t\t\t drm_edid_free(ctx->raw_edid); // free drm_edid\n\t\t\t\t ...\n\t\t\t\t\t\t\t\t drm_edid_alloc(drm_edid->edid)\n\t\t\t\t\t\t\t\t kmemdup(edid); // UAF!!\n\t\t\t\t\t\t\t\t ...\n```\n\nPara prevenir estas vulnerabilidades, al menos en vidi_context, las variables miembro relacionadas con la asignación/liberación de memoria deberían ser protegidas con ctx->lock."
}
],
"lastModified": "2026-06-17T10:21:08.403",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B6F320FA-255D-4544-9CA5-33D757F74941",
"versionEndExcluding": "6.12.77",
"versionStartIncluding": "3.6"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7099A9EC-3D54-4424-BF01-7224EF88C79C",
"versionEndExcluding": "6.18.11",
"versionStartIncluding": "6.13"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EE543C0D-A06B-414F-A403-CB1E088F261E",
"versionEndExcluding": "6.19.1",
"versionStartIncluding": "6.19"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}