CVE-2026-23058
Estado: AplazadaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
can: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak
Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak").
In ems_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback ems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In ems_usb_close() the URBs are freed by calling usb_kill_anchored_urbs(&dev->rx_submitted).
However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in ems_usb_close().
Leer descripción completaMostrar menos
Fix the memory leak by anchoring the URB in the ems_usb_read_bulk_callback() to the dev->rx_submitted anchor.
CVSS
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: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- 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/0ce73a0eb5a27070957b67fd74059b6da89cc516
- https://git.kernel.org/stable/c/46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a
- https://git.kernel.org/stable/c/61e6d3674c3d1da1475dc207b3e75c55d678d18e
- https://git.kernel.org/stable/c/68c62b3e53901846b5f68c5a8bade72a5d9c0b87
- https://git.kernel.org/stable/c/e2c71030dc464d437110bcfb367c493fd402bddb
- https://git.kernel.org/stable/c/e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8
- https://git.kernel.org/stable/c/f48eabd15194b216030b32445f44230df95f5fe0
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-23058",
"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": "702171adeed3607ee9603ec30ce081411e36ae42",
"lessThan": "e2c71030dc464d437110bcfb367c493fd402bddb",
"versionType": "git"
},
{
"status": "affected",
"version": "702171adeed3607ee9603ec30ce081411e36ae42",
"lessThan": "f48eabd15194b216030b32445f44230df95f5fe0",
"versionType": "git"
},
{
"status": "affected",
"version": "702171adeed3607ee9603ec30ce081411e36ae42",
"lessThan": "61e6d3674c3d1da1475dc207b3e75c55d678d18e",
"versionType": "git"
},
{
"status": "affected",
"version": "702171adeed3607ee9603ec30ce081411e36ae42",
"lessThan": "e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8",
"versionType": "git"
},
{
"status": "affected",
"version": "702171adeed3607ee9603ec30ce081411e36ae42",
"lessThan": "46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a",
"versionType": "git"
},
{
"status": "affected",
"version": "702171adeed3607ee9603ec30ce081411e36ae42",
"lessThan": "68c62b3e53901846b5f68c5a8bade72a5d9c0b87",
"versionType": "git"
},
{
"status": "affected",
"version": "702171adeed3607ee9603ec30ce081411e36ae42",
"lessThan": "0ce73a0eb5a27070957b67fd74059b6da89cc516",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/can/usb/ems_usb.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.32"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.32",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.249",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.199",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.162",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.122",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.68",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.8",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/can/usb/ems_usb.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-02-04T17:16:16.480",
"references": [
{
"url": "https://git.kernel.org/stable/c/0ce73a0eb5a27070957b67fd74059b6da89cc516",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/46a191ff7eeec33a2ccb2a1bfea34e18fbc5dc1a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/61e6d3674c3d1da1475dc207b3e75c55d678d18e",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/68c62b3e53901846b5f68c5a8bade72a5d9c0b87",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/e2c71030dc464d437110bcfb367c493fd402bddb",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/e9410fdd4d5f7eaa6526d8c80e83029d7c86a8e8",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f48eabd15194b216030b32445f44230df95f5fe0",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ems_usb: ems_usb_read_bulk_callback(): fix URB memory leak\n\nFix similar memory leak as in commit 7352e1d5932a (\"can: gs_usb:\ngs_usb_receive_bulk_callback(): fix URB memory leak\").\n\nIn ems_usb_open(), the URBs for USB-in transfers are allocated, added to\nthe dev->rx_submitted anchor and submitted. In the complete callback\nems_usb_read_bulk_callback(), the URBs are processed and resubmitted. In\nems_usb_close() the URBs are freed by calling\nusb_kill_anchored_urbs(&dev->rx_submitted).\n\nHowever, this does not take into account that the USB framework unanchors\nthe URB before the complete function is called. This means that once an\nin-URB has been completed, it is no longer anchored and is ultimately not\nreleased in ems_usb_close().\n\nFix the memory leak by anchoring the URB in the\nems_usb_read_bulk_callback() to the dev->rx_submitted anchor."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncan: ems_usb: ems_usb_read_bulk_callback(): corregir fuga de memoria de URB\n\nCorregir fuga de memoria similar a la del commit 7352e1d5932a ('can: gs_usb: gs_usb_receive_bulk_callback(): corregir fuga de memoria de URB').\n\nEn ems_usb_open(), los URB para transferencias USB de entrada son asignados, añadidos al ancla dev->rx_submitted y enviados. En la función de devolución de llamada completa ems_usb_read_bulk_callback(), los URB son procesados y reenviados. En ems_usb_close() los URB son liberados llamando a usb_kill_anchored_urbs(&dev->rx_submitted).\n\nSin embargo, esto no tiene en cuenta que el framework USB desancla el URB antes de que se llame a la función completa. Esto significa que una vez que un URB de entrada ha sido completado, ya no está anclado y finalmente no es liberado en ems_usb_close().\n\nCorregir la fuga de memoria anclando el URB en la ems_usb_read_bulk_callback() al ancla dev->rx_submitted."
}
],
"lastModified": "2026-06-17T10:20:47.223",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}