{"id":"CVE-2026-72032","summary":"net/mlx5: HWS, fix matcher leak on resize target setup failure","details":"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.","modified":"2026-08-18T03:31:03.287151962Z","published":"2026-08-15T05:51:54.461Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72032.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a751ccdc6ea9bde154f25a5ba66926f462f96c19"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ae0265f0a95aaacef59d560a3e1ea36db8be9a52"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bb09d0e64ecaa0aa0f7d1133a1696ed74dead295"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72032.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72032"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2111bb970c787b16b002dc726c1d296ce87a00fb"},{"fixed":"a751ccdc6ea9bde154f25a5ba66926f462f96c19"},{"fixed":"1dce4f4bb3c1c02080b1a45bdd2abb2913a6642a"},{"fixed":"ae0265f0a95aaacef59d560a3e1ea36db8be9a52"},{"fixed":"bb09d0e64ecaa0aa0f7d1133a1696ed74dead295"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72032.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.12.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72032.json"}}],"schema_version":"1.9.0"}