{"id":"CVE-2022-49273","state":"PUBLISHED","title":"rtc: pl031: fix rtc features null pointer dereference","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: pl031: fix rtc features null pointer dereference\n\nWhen there is no interrupt line, rtc alarm feature is disabled.\n\nThe clearing of the alarm feature bit was being done prior to allocations\nof ldata->rtc device, resulting in a null pointer dereference.\n\nClear RTC_FEATURE_ALARM after the rtc device is allocated.","publishedAt":"2025-02-26T01:56:19.110Z","updatedAt":"2026-05-11T18:56:30.248Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d9b0dd54a1943f47a381a474f8ea2c94466110c0","status":"affected","lessThan":"cd2722e411e8ab7e5ae41102f6925fa13dffdac5","versionType":"git"},{"version":"d9b0dd54a1943f47a381a474f8ea2c94466110c0","status":"affected","lessThan":"d274ce4a3dfd0b9a292667535578359b865765cb","versionType":"git"},{"version":"d9b0dd54a1943f47a381a474f8ea2c94466110c0","status":"affected","lessThan":"1b915703964f7e636961df04c540261dc55c6c70","versionType":"git"},{"version":"d9b0dd54a1943f47a381a474f8ea2c94466110c0","status":"affected","lessThan":"ea6af39f3da50c86367a71eb3cc674ade3ed244c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/rtc/rtc-pl031.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.33","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.19","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17.2","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/rtc/rtc-pl031.c"]}],"references":["https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5","https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb","https://git.kernel.org/stable/c/1b915703964f7e636961df04c540261dc55c6c70","https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49273.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49273","state":"PUBLISHED","datePublished":"2025-02-26T01:56:19.110Z","dateUpdated":"2026-05-11T18:56:30.248Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T01:49:39.297Z"},"containers":{"cna":{"title":"rtc: pl031: fix rtc features null pointer dereference","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: pl031: fix rtc features null pointer dereference\n\nWhen there is no interrupt line, rtc alarm feature is disabled.\n\nThe clearing of the alarm feature bit was being done prior to allocations\nof ldata->rtc device, resulting in a null pointer dereference.\n\nClear RTC_FEATURE_ALARM after the rtc device is allocated."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d9b0dd54a1943f47a381a474f8ea2c94466110c0","status":"affected","lessThan":"cd2722e411e8ab7e5ae41102f6925fa13dffdac5","versionType":"git"},{"version":"d9b0dd54a1943f47a381a474f8ea2c94466110c0","status":"affected","lessThan":"d274ce4a3dfd0b9a292667535578359b865765cb","versionType":"git"},{"version":"d9b0dd54a1943f47a381a474f8ea2c94466110c0","status":"affected","lessThan":"1b915703964f7e636961df04c540261dc55c6c70","versionType":"git"},{"version":"d9b0dd54a1943f47a381a474f8ea2c94466110c0","status":"affected","lessThan":"ea6af39f3da50c86367a71eb3cc674ade3ed244c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/rtc/rtc-pl031.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.33","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.16.19","status":"unaffected","lessThanOrEqual":"5.16.*","versionType":"semver"},{"version":"5.17.2","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/rtc/rtc-pl031.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5"},{"url":"https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb"},{"url":"https://git.kernel.org/stable/c/1b915703964f7e636961df04c540261dc55c6c70"},{"url":"https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:56:30.248Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.15.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.16.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.17.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","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-2022-49273","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:45:38.229436Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:47:02.065Z"}}]}}}