{"id":"CVE-2022-49187","state":"PUBLISHED","title":"clk: Fix clk_hw_get_clk() when dev is NULL","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nclk: Fix clk_hw_get_clk() when dev is NULL\n\nAny registered clk_core structure can have a NULL pointer in its dev\nfield. While never actually documented, this is evidenced by the wide\nusage of clk_register and clk_hw_register with a NULL device pointer,\nand the fact that the core of_clk_hw_register() function also passes a\nNULL device pointer.\n\nA call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that\ncase will result in a NULL pointer derefence when it calls dev_name() on\nthat NULL device pointer.\n\nAdd a test for this case and use NULL as the dev_id if the device\npointer is NULL.","publishedAt":"2025-02-26T01:55:36.094Z","updatedAt":"2026-05-11T18:54:48.172Z","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":"30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2","status":"affected","lessThan":"4be3e4c05d8dd1b83b75652cad88c9e752ec7054","versionType":"git"},{"version":"30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2","status":"affected","lessThan":"d183f20cf5a7b546d4108e796b98210ceb317579","versionType":"git"},{"version":"30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2","status":"affected","lessThan":"23f89fe005b105f0dcc55034c13eb89f9b570fac","versionType":"git"},{"version":"30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2","status":"affected","lessThan":"0c1b56df451716ba207bbf59f303473643eee4fd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/clk/clk.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","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/clk/clk.c"]}],"references":["https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054","https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579","https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac","https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fd"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49187.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49187","state":"PUBLISHED","datePublished":"2025-02-26T01:55:36.094Z","dateUpdated":"2026-05-11T18:54:48.172Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T01:49:39.286Z"},"containers":{"cna":{"title":"clk: Fix clk_hw_get_clk() when dev is NULL","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nclk: Fix clk_hw_get_clk() when dev is NULL\n\nAny registered clk_core structure can have a NULL pointer in its dev\nfield. While never actually documented, this is evidenced by the wide\nusage of clk_register and clk_hw_register with a NULL device pointer,\nand the fact that the core of_clk_hw_register() function also passes a\nNULL device pointer.\n\nA call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that\ncase will result in a NULL pointer derefence when it calls dev_name() on\nthat NULL device pointer.\n\nAdd a test for this case and use NULL as the dev_id if the device\npointer is NULL."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2","status":"affected","lessThan":"4be3e4c05d8dd1b83b75652cad88c9e752ec7054","versionType":"git"},{"version":"30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2","status":"affected","lessThan":"d183f20cf5a7b546d4108e796b98210ceb317579","versionType":"git"},{"version":"30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2","status":"affected","lessThan":"23f89fe005b105f0dcc55034c13eb89f9b570fac","versionType":"git"},{"version":"30d6f8c15d2cd877c1f3d47d8a1064649ebe58e2","status":"affected","lessThan":"0c1b56df451716ba207bbf59f303473643eee4fd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/clk/clk.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","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/clk/clk.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054"},{"url":"https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579"},{"url":"https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac"},{"url":"https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:54:48.172Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.16.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.17.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","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-2022-49187","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:47:18.677759Z"}}}],"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":"2025-10-01T19:56:59.191Z"}}]}}}