{"api_version":"1","generated_at":"2026-08-18T00:14:50+00:00","cve":"CVE-2026-72032","urls":{"html":"https://cve.report/CVE-2026-72032","api":"https://cve.report/api/cve/CVE-2026-72032.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72032","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72032"},"summary":{"title":"net/mlx5: HWS, fix matcher leak on resize target setup failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: HWS, fix matcher leak on resize target setup failure\n\nhws_bwc_matcher_move() allocates a replacement matcher before setting it\nas the resize target. If mlx5hws_matcher_resize_set_target() fails, the\nreplacement matcher is not attached anywhere and is leaked.\n\nFix the leak by destroying the replacement matcher before returning from\nthe resize-target failure path.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have a\nmlx5 HWS-capable device to test with, no runtime testing was able to be\nperformed.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:21:12","updated_at":"2026-08-17 06:18:00"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bb09d0e64ecaa0aa0f7d1133a1696ed74dead295","name":"https://git.kernel.org/stable/c/bb09d0e64ecaa0aa0f7d1133a1696ed74dead295","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a","name":"https://git.kernel.org/stable/c/1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a751ccdc6ea9bde154f25a5ba66926f462f96c19","name":"https://git.kernel.org/stable/c/a751ccdc6ea9bde154f25a5ba66926f462f96c19","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ae0265f0a95aaacef59d560a3e1ea36db8be9a52","name":"https://git.kernel.org/stable/c/ae0265f0a95aaacef59d560a3e1ea36db8be9a52","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72032","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72032","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2111bb970c787b16b002dc726c1d296ce87a00fb a751ccdc6ea9bde154f25a5ba66926f462f96c19 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2111bb970c787b16b002dc726c1d296ce87a00fb 1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2111bb970c787b16b002dc726c1d296ce87a00fb ae0265f0a95aaacef59d560a3e1ea36db8be9a52 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2111bb970c787b16b002dc726c1d296ce87a00fb bb09d0e64ecaa0aa0f7d1133a1696ed74dead295 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"72032","cve":"CVE-2026-72032","epss":"0.002000000","percentile":"0.101650000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a751ccdc6ea9bde154f25a5ba66926f462f96c19","status":"affected","version":"2111bb970c787b16b002dc726c1d296ce87a00fb","versionType":"git"},{"lessThan":"1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a","status":"affected","version":"2111bb970c787b16b002dc726c1d296ce87a00fb","versionType":"git"},{"lessThan":"ae0265f0a95aaacef59d560a3e1ea36db8be9a52","status":"affected","version":"2111bb970c787b16b002dc726c1d296ce87a00fb","versionType":"git"},{"lessThan":"bb09d0e64ecaa0aa0f7d1133a1696ed74dead295","status":"affected","version":"2111bb970c787b16b002dc726c1d296ce87a00fb","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: HWS, fix matcher leak on resize target setup failure\n\nhws_bwc_matcher_move() allocates a replacement matcher before setting it\nas the resize target. If mlx5hws_matcher_resize_set_target() fails, the\nreplacement matcher is not attached anywhere and is leaked.\n\nFix the leak by destroying the replacement matcher before returning from\nthe resize-target failure path.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have a\nmlx5 HWS-capable device to test with, no runtime testing was able to be\nperformed."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:06:57.395Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a751ccdc6ea9bde154f25a5ba66926f462f96c19"},{"url":"https://git.kernel.org/stable/c/1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a"},{"url":"https://git.kernel.org/stable/c/ae0265f0a95aaacef59d560a3e1ea36db8be9a52"},{"url":"https://git.kernel.org/stable/c/bb09d0e64ecaa0aa0f7d1133a1696ed74dead295"}],"title":"net/mlx5: HWS, fix matcher leak on resize target setup failure","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72032","datePublished":"2026-08-15T05:51:54.461Z","dateReserved":"2026-08-09T03:40:39.901Z","dateUpdated":"2026-08-17T05:06:57.395Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:21:12","lastModifiedDate":"2026-08-17 06:18:00","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72032","Ordinal":"1","Title":"net/mlx5: HWS, fix matcher leak on resize target setup failure","CVE":"CVE-2026-72032","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72032","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: HWS, fix matcher leak on resize target setup failure\n\nhws_bwc_matcher_move() allocates a replacement matcher before setting it\nas the resize target. If mlx5hws_matcher_resize_set_target() fails, the\nreplacement matcher is not attached anywhere and is leaked.\n\nFix the leak by destroying the replacement matcher before returning from\nthe resize-target failure path.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have a\nmlx5 HWS-capable device to test with, no runtime testing was able to be\nperformed.","Type":"Description","Title":"net/mlx5: HWS, fix matcher leak on resize target setup failure"}]}}}