{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53220","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-09-15T14:19:21.845Z","datePublished":"2025-09-15T14:21:49.075Z","dateUpdated":"2026-05-11T19:40:35.199Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:40:35.199Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: az6007: Fix null-ptr-deref in az6007_i2c_xfer()\n\nIn az6007_i2c_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 az6007_i2c_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":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/dvb-usb-v2/az6007.c"],"versions":[{"version":"caa1a700ed2a06a831e6a7db5d9f213fc63caee3","lessThan":"c6763fefa267f6e62595a6ac1f57815d99fc90b7","status":"affected","versionType":"git"},{"version":"caa1a700ed2a06a831e6a7db5d9f213fc63caee3","lessThan":"adcb73f8ce9aec48b1f85223f401c1574015d8d2","status":"affected","versionType":"git"},{"version":"caa1a700ed2a06a831e6a7db5d9f213fc63caee3","lessThan":"991c77fe18c6f374bbf83376f8c42550aa565662","status":"affected","versionType":"git"},{"version":"caa1a700ed2a06a831e6a7db5d9f213fc63caee3","lessThan":"a9def3e9718a4dc756f48db147d42ec41a966240","status":"affected","versionType":"git"},{"version":"caa1a700ed2a06a831e6a7db5d9f213fc63caee3","lessThan":"5b1ea100ad3695025969dc4693f307877fb688d6","status":"affected","versionType":"git"},{"version":"caa1a700ed2a06a831e6a7db5d9f213fc63caee3","lessThan":"6ab7ea4e17d6a605d05308adf8f3408924770cba","status":"affected","versionType":"git"},{"version":"caa1a700ed2a06a831e6a7db5d9f213fc63caee3","lessThan":"a1110f19d4940e4185251d072cbb0ff51486a1e7","status":"affected","versionType":"git"},{"version":"caa1a700ed2a06a831e6a7db5d9f213fc63caee3","lessThan":"1047f9343011f2cedc73c64829686206a7e9fc3f","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/dvb-usb-v2/az6007.c"],"versions":[{"version":"3.4","status":"affected"},{"version":"0","lessThan":"3.4","status":"unaffected","versionType":"semver"},{"version":"4.14.326","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.295","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.257","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.197","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.133","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.55","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.5.5","lessThanOrEqual":"6.5.*","status":"unaffected","versionType":"semver"},{"version":"6.6","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"4.14.326"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"4.19.295"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.4.257"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.10.197"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.15.133"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.1.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.5.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.6"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c6763fefa267f6e62595a6ac1f57815d99fc90b7"},{"url":"https://git.kernel.org/stable/c/adcb73f8ce9aec48b1f85223f401c1574015d8d2"},{"url":"https://git.kernel.org/stable/c/991c77fe18c6f374bbf83376f8c42550aa565662"},{"url":"https://git.kernel.org/stable/c/a9def3e9718a4dc756f48db147d42ec41a966240"},{"url":"https://git.kernel.org/stable/c/5b1ea100ad3695025969dc4693f307877fb688d6"},{"url":"https://git.kernel.org/stable/c/6ab7ea4e17d6a605d05308adf8f3408924770cba"},{"url":"https://git.kernel.org/stable/c/a1110f19d4940e4185251d072cbb0ff51486a1e7"},{"url":"https://git.kernel.org/stable/c/1047f9343011f2cedc73c64829686206a7e9fc3f"}],"title":"media: az6007: Fix null-ptr-deref in az6007_i2c_xfer()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2023-53220","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T17:50:08.533952Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-476","description":"CWE-476 NULL Pointer Dereference"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-14T17:52:58.476Z"}}]}}