CVE-2025-38693
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar In w7090p_tuner_write_serpar, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add check on msg[0].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-04 16:15:37.593000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
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"id": "CVE-2025-38693",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-04T16:15:37.593",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Modified",
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar\n\nIn w7090p_tuner_write_serpar, msg is controlled by user. When msg[0].buf is null and msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing msg[0].buf[2] without sanity check, null pointer deref would happen. We add\ncheck on msg[0].len to prevent crash.\n\nSimilar commit: commit 0ed554fd769a (\"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\")"
},
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"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmedia: dvb-frontends: w7090p: corregir desreferencia de puntero nulo en w7090p_tuner_write_serpar y w7090p_tuner_read_serpar\n\nEn w7090p_tuner_write_serpar, msg es controlado por el usuario. Cuando msg[0].buf es nulo y msg[0].len es cero, las comprobaciones anteriores en msg[0].buf se pasarían. Si se accede a msg[0].buf[2] sin una comprobación de cordura, ocurriría una desreferencia de puntero nulo. Añadimos una comprobación en msg[0].len para evitar un fallo.\n\nCommit similar: commit 0ed554fd769a ('media: dvb-usb: az6027: corregir desreferencia de puntero nulo en az6027_i2c_xfer()')"
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