{"id":"CVE-2026-72308","state":"PUBLISHED","title":"mlxsw: fix refcount leak in mlxsw_sp_port_lag_join()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: fix refcount leak in mlxsw_sp_port_lag_join()\n\nWhen mlxsw_sp_port_lag_index_get() fails, mlxsw_sp_port_lag_join()\nreturns an error without releasing the lag reference obtained by\nthe earlier mlxsw_sp_lag_get().  All other error paths in the\nfunction jump to the cleanup label that ends with\nmlxsw_sp_lag_put(), so this is a single missed release.\n\nFix the leak by replacing the bare 'return err' with a goto to the\nexisting error cleanup label, which will drop the reference safely.","publishedAt":"2026-08-15T05:55:25.260Z","updatedAt":"2026-08-23T12:47:14.564Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"99ff5b0083eae6f774360c4ea6874604e6c9b553","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"9bf2d6eea26a226f8ebab7baea6f2b018f914560","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"8b3350eacd9df0597bfe36a594df7b9def0b3edf","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"1cf8a1af42b1f12a30b7abd34fe4fc23b3170e7e","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"2d8b3c3e129973a51ae924bdcf6993a76b828814","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"cab468c3c03f4bcd7530ce2783a4140da14efb7b","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"41c8c1d65b32beacd8d916a22457b4f6e47f45af","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlxsw/spectrum.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.5","versionType":"semver"},{"version":"5.10.266","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.217","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","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"]}],"references":["https://git.kernel.org/stable/c/3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b","https://git.kernel.org/stable/c/99ff5b0083eae6f774360c4ea6874604e6c9b553","https://git.kernel.org/stable/c/9bf2d6eea26a226f8ebab7baea6f2b018f914560","https://git.kernel.org/stable/c/8b3350eacd9df0597bfe36a594df7b9def0b3edf","https://git.kernel.org/stable/c/1cf8a1af42b1f12a30b7abd34fe4fc23b3170e7e","https://git.kernel.org/stable/c/2d8b3c3e129973a51ae924bdcf6993a76b828814","https://git.kernel.org/stable/c/cab468c3c03f4bcd7530ce2783a4140da14efb7b","https://git.kernel.org/stable/c/41c8c1d65b32beacd8d916a22457b4f6e47f45af"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72308.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72308","state":"PUBLISHED","datePublished":"2026-08-15T05:55:25.260Z","dateUpdated":"2026-08-23T12:47:14.564Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.918Z"},"containers":{"cna":{"title":"mlxsw: fix refcount leak in mlxsw_sp_port_lag_join()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: fix refcount leak in mlxsw_sp_port_lag_join()\n\nWhen mlxsw_sp_port_lag_index_get() fails, mlxsw_sp_port_lag_join()\nreturns an error without releasing the lag reference obtained by\nthe earlier mlxsw_sp_lag_get().  All other error paths in the\nfunction jump to the cleanup label that ends with\nmlxsw_sp_lag_put(), so this is a single missed release.\n\nFix the leak by replacing the bare 'return err' with a goto to the\nexisting error cleanup label, which will drop the reference safely."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"99ff5b0083eae6f774360c4ea6874604e6c9b553","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"9bf2d6eea26a226f8ebab7baea6f2b018f914560","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"8b3350eacd9df0597bfe36a594df7b9def0b3edf","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"1cf8a1af42b1f12a30b7abd34fe4fc23b3170e7e","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"2d8b3c3e129973a51ae924bdcf6993a76b828814","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"cab468c3c03f4bcd7530ce2783a4140da14efb7b","versionType":"git"},{"version":"0d65fc13042fce6a2d6de58ff0dc9531e8523c07","status":"affected","lessThan":"41c8c1d65b32beacd8d916a22457b4f6e47f45af","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlxsw/spectrum.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.5","versionType":"semver"},{"version":"5.10.266","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.217","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","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"]}],"references":[{"url":"https://git.kernel.org/stable/c/3fbeaa8ecd144ad593f9fa1ab4b40a780ad3700b"},{"url":"https://git.kernel.org/stable/c/99ff5b0083eae6f774360c4ea6874604e6c9b553"},{"url":"https://git.kernel.org/stable/c/9bf2d6eea26a226f8ebab7baea6f2b018f914560"},{"url":"https://git.kernel.org/stable/c/8b3350eacd9df0597bfe36a594df7b9def0b3edf"},{"url":"https://git.kernel.org/stable/c/1cf8a1af42b1f12a30b7abd34fe4fc23b3170e7e"},{"url":"https://git.kernel.org/stable/c/2d8b3c3e129973a51ae924bdcf6993a76b828814"},{"url":"https://git.kernel.org/stable/c/cab468c3c03f4bcd7530ce2783a4140da14efb7b"},{"url":"https://git.kernel.org/stable/c/41c8c1d65b32beacd8d916a22457b4f6e47f45af"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-23T12:47:14.564Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"5.10.266"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"5.15.217"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.1.184"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}