CVE-2023-54066 (GCVE-0-2023-54066)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:23 – Updated: 2025-12-24 12:23
VLAI?
Title
media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer
Summary
In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer In gl861_i2c_master_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach gl861_i2c_master_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 578b67614ae0e4fba3945b66a4c8f9ae77115bcb (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2a33fc57133d6f39d62285df6706aeb1714967f1 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < dfcd3c010209927b9f45b860f046635dc32e32e1 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 72af676551efe820e309a6c7681c2c4372f37376 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b97719a66970601cd3151a3e2020f4454a1c4ff6 (git)
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    Linux Linux Unaffected: 5.10.197 , ≤ 5.10.* (semver)
Unaffected: 5.15.133 , ≤ 5.15.* (semver)
Unaffected: 6.1.55 , ≤ 6.1.* (semver)
Unaffected: 6.5.5 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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          "product": "Linux",
          "programFiles": [
            "drivers/media/usb/dvb-usb-v2/gl861.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer\n\nIn gl861_i2c_master_xfer, msg is controlled by user. When msg[i].buf\nis null and msg[i].len is zero, former checks on msg[i].buf would be\npassed. Malicious data finally reach gl861_i2c_master_xfer. If accessing\nmsg[i].buf[0] without sanity check, null ptr deref would happen.\nWe add check on msg[i].len to prevent crash.\n\nSimilar commit:\ncommit 0ed554fd769a\n(\"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\")"
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        "shortName": "Linux"
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      "title": "media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer",
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    "datePublished": "2025-12-24T12:23:11.431Z",
    "dateReserved": "2025-12-24T12:21:05.092Z",
    "dateUpdated": "2025-12-24T12:23:11.431Z",
    "state": "PUBLISHED"
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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