{"id":"CVE-2026-98498","state":"PUBLISHED","title":"net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()\n\nWhen the reverse entry is found but its counter is already being\nreleased, refcount_inc_not_zero() fails and the reference taken by\nmlx5_tc_ct_entry_get() is never dropped before falling through to\ncreate_counter.  Drop it so the reverse entry is not kept alive forever\nby a shared counter lookup that did not use it.","publishedAt":"2026-10-18T15:16:30.116Z","updatedAt":"2026-10-19T09:20:36.589Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"598daa5f95883f881a54967da40ce0fdfc1fdaa8","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"79a3257280a335bbebbcd10d3895e8468bdcd6ae","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"c45c997d0c27359b502587897f775c5a277f0bd4","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"288721013605b4e0304e10f6a087b77f71cfad11","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"60eab87d0a798070bf5a856b1d9e5785ce92da53","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"99d8dc51663747078c031acac32edc6d90c8f1f7","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"1f13989a0704bd98cab09f9bee63e2c8a98ad4dd","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"0bf6bb567f0edaa771e7dd208ef98da50e6a4485","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","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/en/tc_ct.c"]}],"references":["https://git.kernel.org/stable/c/598daa5f95883f881a54967da40ce0fdfc1fdaa8","https://git.kernel.org/stable/c/79a3257280a335bbebbcd10d3895e8468bdcd6ae","https://git.kernel.org/stable/c/c45c997d0c27359b502587897f775c5a277f0bd4","https://git.kernel.org/stable/c/288721013605b4e0304e10f6a087b77f71cfad11","https://git.kernel.org/stable/c/60eab87d0a798070bf5a856b1d9e5785ce92da53","https://git.kernel.org/stable/c/99d8dc51663747078c031acac32edc6d90c8f1f7","https://git.kernel.org/stable/c/1f13989a0704bd98cab09f9bee63e2c8a98ad4dd","https://git.kernel.org/stable/c/0bf6bb567f0edaa771e7dd208ef98da50e6a4485"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98498.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98498","state":"PUBLISHED","datePublished":"2026-10-18T15:16:30.116Z","dateUpdated":"2026-10-19T09:20:36.589Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.353Z"},"containers":{"cna":{"title":"net/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix rev_entry reference leak in mlx5_tc_ct_shared_counter_get()\n\nWhen the reverse entry is found but its counter is already being\nreleased, refcount_inc_not_zero() fails and the reference taken by\nmlx5_tc_ct_entry_get() is never dropped before falling through to\ncreate_counter.  Drop it so the reverse entry is not kept alive forever\nby a shared counter lookup that did not use it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"598daa5f95883f881a54967da40ce0fdfc1fdaa8","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"79a3257280a335bbebbcd10d3895e8468bdcd6ae","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"c45c997d0c27359b502587897f775c5a277f0bd4","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"288721013605b4e0304e10f6a087b77f71cfad11","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"60eab87d0a798070bf5a856b1d9e5785ce92da53","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"99d8dc51663747078c031acac32edc6d90c8f1f7","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"1f13989a0704bd98cab09f9bee63e2c8a98ad4dd","versionType":"git"},{"version":"1edae2335adfa7006853e8b427f0c7c3f46b51dd","status":"affected","lessThan":"0bf6bb567f0edaa771e7dd208ef98da50e6a4485","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","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/en/tc_ct.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/598daa5f95883f881a54967da40ce0fdfc1fdaa8"},{"url":"https://git.kernel.org/stable/c/79a3257280a335bbebbcd10d3895e8468bdcd6ae"},{"url":"https://git.kernel.org/stable/c/c45c997d0c27359b502587897f775c5a277f0bd4"},{"url":"https://git.kernel.org/stable/c/288721013605b4e0304e10f6a087b77f71cfad11"},{"url":"https://git.kernel.org/stable/c/60eab87d0a798070bf5a856b1d9e5785ce92da53"},{"url":"https://git.kernel.org/stable/c/99d8dc51663747078c031acac32edc6d90c8f1f7"},{"url":"https://git.kernel.org/stable/c/1f13989a0704bd98cab09f9bee63e2c8a98ad4dd"},{"url":"https://git.kernel.org/stable/c/0bf6bb567f0edaa771e7dd208ef98da50e6a4485"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:20:36.589Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}