{"id":"CVE-2023-54066","state":"PUBLISHED","title":"media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer","description":"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()\")","publishedAt":"2025-12-24T12:23:11.431Z","updatedAt":"2026-05-11T19:54:49.186Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"578b67614ae0e4fba3945b66a4c8f9ae77115bcb","versionType":"git"},{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"2a33fc57133d6f39d62285df6706aeb1714967f1","versionType":"git"},{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"dfcd3c010209927b9f45b860f046635dc32e32e1","versionType":"git"},{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"72af676551efe820e309a6c7681c2c4372f37376","versionType":"git"},{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"b97719a66970601cd3151a3e2020f4454a1c4ff6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/dvb-usb-v2/gl861.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.197","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.133","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.55","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.5.5","status":"unaffected","lessThanOrEqual":"6.5.*","versionType":"semver"},{"version":"6.6","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/dvb-usb-v2/gl861.c"]}],"references":["https://git.kernel.org/stable/c/578b67614ae0e4fba3945b66a4c8f9ae77115bcb","https://git.kernel.org/stable/c/2a33fc57133d6f39d62285df6706aeb1714967f1","https://git.kernel.org/stable/c/dfcd3c010209927b9f45b860f046635dc32e32e1","https://git.kernel.org/stable/c/72af676551efe820e309a6c7681c2c4372f37376","https://git.kernel.org/stable/c/b97719a66970601cd3151a3e2020f4454a1c4ff6"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/54xxx/CVE-2023-54066.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54066","state":"PUBLISHED","datePublished":"2025-12-24T12:23:11.431Z","dateUpdated":"2026-05-11T19:54:49.186Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T12:21:05.092Z"},"containers":{"cna":{"title":"media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer","descriptions":[{"lang":"en","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()\")"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"578b67614ae0e4fba3945b66a4c8f9ae77115bcb","versionType":"git"},{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"2a33fc57133d6f39d62285df6706aeb1714967f1","versionType":"git"},{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"dfcd3c010209927b9f45b860f046635dc32e32e1","versionType":"git"},{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"72af676551efe820e309a6c7681c2c4372f37376","versionType":"git"},{"version":"1ea76d16569b7fc242b860c7e19549be028b13d1","status":"affected","lessThan":"b97719a66970601cd3151a3e2020f4454a1c4ff6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/dvb-usb-v2/gl861.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.197","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.133","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.55","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.5.5","status":"unaffected","lessThanOrEqual":"6.5.*","versionType":"semver"},{"version":"6.6","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/dvb-usb-v2/gl861.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/578b67614ae0e4fba3945b66a4c8f9ae77115bcb"},{"url":"https://git.kernel.org/stable/c/2a33fc57133d6f39d62285df6706aeb1714967f1"},{"url":"https://git.kernel.org/stable/c/dfcd3c010209927b9f45b860f046635dc32e32e1"},{"url":"https://git.kernel.org/stable/c/72af676551efe820e309a6c7681c2c4372f37376"},{"url":"https://git.kernel.org/stable/c/b97719a66970601cd3151a3e2020f4454a1c4ff6"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:54:49.186Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.197"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.15.133"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.1.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.5.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.6"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}