{"id":"CVE-2022-49208","state":"PUBLISHED","title":"RDMA/irdma: Prevent some integer underflows","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Prevent some integer underflows\n\nMy static checker complains that:\n\n    drivers/infiniband/hw/irdma/ctrl.c:3605 irdma_sc_ceq_init()\n    warn: can subtract underflow 'info->dev->hmc_fpm_misc.max_ceqs'?\n\nIt appears that \"info->dev->hmc_fpm_misc.max_ceqs\" comes from the firmware\nin irdma_sc_parse_fpm_query_buf() so, yes, there is a chance that it could\nbe zero.  Even if we trust the firmware, it's easy enough to change the\ncondition just as a hardenning measure.","publishedAt":"2025-02-26T01:55:46.666Z","updatedAt":"2026-05-11T18:55:14.183Z","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":"3f49d684256963d3f27dfb9d9ff228e2255be78d","status":"affected","lessThan":"d52dab6e03550f9c97121b0c11c0a3ed78ee76a4","versionType":"git"},{"version":"3f49d684256963d3f27dfb9d9ff228e2255be78d","status":"affected","lessThan":"f21056f15bbeacab7b4b87af232f5599d1f2bff1","versionType":"git"},{"version":"3f49d684256963d3f27dfb9d9ff228e2255be78d","status":"affected","lessThan":"7340c3675d7ac946f4019b84cd7c64ed542dfe4c","versionType":"git"},{"version":"3f49d684256963d3f27dfb9d9ff228e2255be78d","status":"affected","lessThan":"6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/irdma/ctrl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","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/infiniband/hw/irdma/ctrl.c"]}],"references":["https://git.kernel.org/stable/c/d52dab6e03550f9c97121b0c11c0a3ed78ee76a4","https://git.kernel.org/stable/c/f21056f15bbeacab7b4b87af232f5599d1f2bff1","https://git.kernel.org/stable/c/7340c3675d7ac946f4019b84cd7c64ed542dfe4c","https://git.kernel.org/stable/c/6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75"],"weaknesses":["CWE-191"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49208.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49208","state":"PUBLISHED","datePublished":"2025-02-26T01:55:46.666Z","dateUpdated":"2026-05-11T18:55:14.183Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T01:49:39.291Z"},"containers":{"cna":{"title":"RDMA/irdma: Prevent some integer underflows","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Prevent some integer underflows\n\nMy static checker complains that:\n\n    drivers/infiniband/hw/irdma/ctrl.c:3605 irdma_sc_ceq_init()\n    warn: can subtract underflow 'info->dev->hmc_fpm_misc.max_ceqs'?\n\nIt appears that \"info->dev->hmc_fpm_misc.max_ceqs\" comes from the firmware\nin irdma_sc_parse_fpm_query_buf() so, yes, there is a chance that it could\nbe zero.  Even if we trust the firmware, it's easy enough to change the\ncondition just as a hardenning measure."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3f49d684256963d3f27dfb9d9ff228e2255be78d","status":"affected","lessThan":"d52dab6e03550f9c97121b0c11c0a3ed78ee76a4","versionType":"git"},{"version":"3f49d684256963d3f27dfb9d9ff228e2255be78d","status":"affected","lessThan":"f21056f15bbeacab7b4b87af232f5599d1f2bff1","versionType":"git"},{"version":"3f49d684256963d3f27dfb9d9ff228e2255be78d","status":"affected","lessThan":"7340c3675d7ac946f4019b84cd7c64ed542dfe4c","versionType":"git"},{"version":"3f49d684256963d3f27dfb9d9ff228e2255be78d","status":"affected","lessThan":"6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/irdma/ctrl.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","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/infiniband/hw/irdma/ctrl.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d52dab6e03550f9c97121b0c11c0a3ed78ee76a4"},{"url":"https://git.kernel.org/stable/c/f21056f15bbeacab7b4b87af232f5599d1f2bff1"},{"url":"https://git.kernel.org/stable/c/7340c3675d7ac946f4019b84cd7c64ed542dfe4c"},{"url":"https://git.kernel.org/stable/c/6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:55:14.183Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.15.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.16.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"5.17.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","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-2022-49208","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:46:59.199426Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-191","lang":"en","type":"CWE","description":"CWE-191 Integer Underflow (Wrap or Wraparound)"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T19:47:06.592Z"}}]}}}