{"id":"CVE-2022-49134","state":"PUBLISHED","title":"mlxsw: spectrum: Guard against invalid local ports","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum: Guard against invalid local ports\n\nWhen processing events generated by the device's firmware, the driver\nprotects itself from events reported for non-existent local ports, but\nnot for the CPU port (local port 0), which exists, but does not have all\nthe fields as any local port.\n\nThis can result in a NULL pointer dereference when trying access\n'struct mlxsw_sp_port' fields which are not initialized for CPU port.\n\nCommit 63b08b1f6834 (\"mlxsw: spectrum: Protect driver from buggy firmware\")\nalready handled such issue by bailing early when processing a PUDE event\nreported for the CPU port.\n\nGeneralize the approach by moving the check to a common function and\nmaking use of it in all relevant places.","publishedAt":"2025-02-26T01:55:08.293Z","updatedAt":"2026-05-11T18:53:49.145Z","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":"28b1987ef5064dd5c43538ba1168ef7b801f3cad","status":"affected","lessThan":"4cad27ba2e5a5843a7fab5aa30de2b8e8c3db3a8","versionType":"git"},{"version":"28b1987ef5064dd5c43538ba1168ef7b801f3cad","status":"affected","lessThan":"bcdfd615f83b4bd04678109bf18022d1476e4bbf","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlxsw/spectrum.c","drivers/net/ethernet/mellanox/mlxsw/spectrum.h","drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c","drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"5.17.3","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/net/ethernet/mellanox/mlxsw/spectrum.c","drivers/net/ethernet/mellanox/mlxsw/spectrum.h","drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c","drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c"]}],"references":["https://git.kernel.org/stable/c/4cad27ba2e5a5843a7fab5aa30de2b8e8c3db3a8","https://git.kernel.org/stable/c/bcdfd615f83b4bd04678109bf18022d1476e4bbf"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49134.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49134","state":"PUBLISHED","datePublished":"2025-02-26T01:55:08.293Z","dateUpdated":"2026-05-11T18:53:49.145Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T01:49:39.267Z"},"containers":{"cna":{"title":"mlxsw: spectrum: Guard against invalid local ports","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum: Guard against invalid local ports\n\nWhen processing events generated by the device's firmware, the driver\nprotects itself from events reported for non-existent local ports, but\nnot for the CPU port (local port 0), which exists, but does not have all\nthe fields as any local port.\n\nThis can result in a NULL pointer dereference when trying access\n'struct mlxsw_sp_port' fields which are not initialized for CPU port.\n\nCommit 63b08b1f6834 (\"mlxsw: spectrum: Protect driver from buggy firmware\")\nalready handled such issue by bailing early when processing a PUDE event\nreported for the CPU port.\n\nGeneralize the approach by moving the check to a common function and\nmaking use of it in all relevant places."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"28b1987ef5064dd5c43538ba1168ef7b801f3cad","status":"affected","lessThan":"4cad27ba2e5a5843a7fab5aa30de2b8e8c3db3a8","versionType":"git"},{"version":"28b1987ef5064dd5c43538ba1168ef7b801f3cad","status":"affected","lessThan":"bcdfd615f83b4bd04678109bf18022d1476e4bbf","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlxsw/spectrum.c","drivers/net/ethernet/mellanox/mlxsw/spectrum.h","drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c","drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.4","versionType":"semver"},{"version":"5.17.3","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/net/ethernet/mellanox/mlxsw/spectrum.c","drivers/net/ethernet/mellanox/mlxsw/spectrum.h","drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c","drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4cad27ba2e5a5843a7fab5aa30de2b8e8c3db3a8"},{"url":"https://git.kernel.org/stable/c/bcdfd615f83b4bd04678109bf18022d1476e4bbf"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:53:49.145Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","versionEndExcluding":"5.17.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4","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-2022-49134","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:48:13.504357Z"}}}],"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":"2025-10-01T19:57:02.752Z"}}]}}}