CVE-2023-54066 | THREATINT

Description

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()")

PUBLISHED Reserved 2025-12-24 | Published 2025-12-24 | Updated 2025-12-24 | Assigner Linux

Product status

Default status

unaffected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 578b67614ae0e4fba3945b66a4c8f9ae77115bcb

affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 2a33fc57133d6f39d62285df6706aeb1714967f1

affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before dfcd3c010209927b9f45b860f046635dc32e32e1

affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 72af676551efe820e309a6c7681c2c4372f37376

affected

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before b97719a66970601cd3151a3e2020f4454a1c4ff6

affected

Default status

affected

5.10.197 (semver)

unaffected

5.15.133 (semver)

unaffected

6.1.55 (semver)

unaffected

6.5.5 (semver)

unaffected

6.6 (original_commit_for_fix)

unaffected

References

git.kernel.org/...c/578b67614ae0e4fba3945b66a4c8f9ae77115bcb

git.kernel.org/...c/2a33fc57133d6f39d62285df6706aeb1714967f1

git.kernel.org/...c/dfcd3c010209927b9f45b860f046635dc32e32e1

git.kernel.org/...c/72af676551efe820e309a6c7681c2c4372f37376

git.kernel.org/...c/b97719a66970601cd3151a3e2020f4454a1c4ff6

cve.org (CVE-2023-54066)

nvd.nist.gov (CVE-2023-54066)

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