{"id":"CVE-2025-21800","state":"PUBLISHED","title":"net/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset\n\nWhen bit offset for HWS_SET32 macro is negative,\nUBSAN complains about the shift-out-of-bounds:\n\n  UBSAN: shift-out-of-bounds in\n  drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c:177:2\n  shift exponent -8 is negative","publishedAt":"2025-02-27T20:00:54.884Z","updatedAt":"2026-05-11T21:06:44.750Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"74a778b4a63faef9ff02aad0d332b209835f93e1","status":"affected","lessThan":"92cff996624c4757d5bbace3dfa3f1567ba94143","versionType":"git"},{"version":"74a778b4a63faef9ff02aad0d332b209835f93e1","status":"affected","lessThan":"69c676c0ded472713e6d1b3a456b3c4f52f66f0e","versionType":"git"},{"version":"74a778b4a63faef9ff02aad0d332b209835f93e1","status":"affected","lessThan":"be482f1d10da781db9445d2753c1e3f1fd82babf","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.12","versionType":"semver"},{"version":"6.12.13","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.2","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","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/mlx5/core/steering/hws/definer.c"]}],"references":["https://git.kernel.org/stable/c/92cff996624c4757d5bbace3dfa3f1567ba94143","https://git.kernel.org/stable/c/69c676c0ded472713e6d1b3a456b3c4f52f66f0e","https://git.kernel.org/stable/c/be482f1d10da781db9445d2753c1e3f1fd82babf"],"weaknesses":[],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/21xxx/CVE-2025-21800.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21800","state":"PUBLISHED","datePublished":"2025-02-27T20:00:54.884Z","dateUpdated":"2026-05-11T21:06:44.750Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-12-29T08:45:45.770Z"},"containers":{"cna":{"title":"net/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: HWS, fix definer's HWS_SET32 macro for negative offset\n\nWhen bit offset for HWS_SET32 macro is negative,\nUBSAN complains about the shift-out-of-bounds:\n\n  UBSAN: shift-out-of-bounds in\n  drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c:177:2\n  shift exponent -8 is negative"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"74a778b4a63faef9ff02aad0d332b209835f93e1","status":"affected","lessThan":"92cff996624c4757d5bbace3dfa3f1567ba94143","versionType":"git"},{"version":"74a778b4a63faef9ff02aad0d332b209835f93e1","status":"affected","lessThan":"69c676c0ded472713e6d1b3a456b3c4f52f66f0e","versionType":"git"},{"version":"74a778b4a63faef9ff02aad0d332b209835f93e1","status":"affected","lessThan":"be482f1d10da781db9445d2753c1e3f1fd82babf","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/steering/hws/definer.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.12","versionType":"semver"},{"version":"6.12.13","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.2","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","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/mlx5/core/steering/hws/definer.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/92cff996624c4757d5bbace3dfa3f1567ba94143"},{"url":"https://git.kernel.org/stable/c/69c676c0ded472713e6d1b3a456b3c4f52f66f0e"},{"url":"https://git.kernel.org/stable/c/be482f1d10da781db9445d2753c1e3f1fd82babf"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:06:44.750Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.12.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.13.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.14"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}