{"api_version":"1","generated_at":"2026-10-06T22:37:52+00:00","cve":"CVE-2026-98015","urls":{"html":"https://cve.report/CVE-2026-98015","api":"https://cve.report/api/cve/CVE-2026-98015.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98015","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98015"},"summary":{"title":"net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put\n\nIn mlx5_eswitch_termtbl_put(), the zero-ref cleanup check reads\ntt->ref_count after termtbl_mutex has been released.  Two concurrent\ncallers on the same mlx5_termtbl_handle race: one decrements ref_count\nto zero, removes the hash entry, and calls kfree(tt) while the other\nhas already dropped the mutex and is about to evaluate\nif (!tt->ref_count), producing a use-after-free.\n\nFix this by capturing the result of the decrement into a stack-local\nlast variable before dropping the mutex.  The cleanup decision is now\nmade entirely under termtbl_mutex, and tt is not touched after\nkfree.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-25 11:17:29","updated_at":"2026-10-03 11:18:24"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a5833fdf53350b8b95a558fcf0056ddb1c0fe154","name":"https://git.kernel.org/stable/c/a5833fdf53350b8b95a558fcf0056ddb1c0fe154","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e3ee194a790896fa92fea20b5385a354be2f2c12","name":"https://git.kernel.org/stable/c/e3ee194a790896fa92fea20b5385a354be2f2c12","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36","name":"https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797","name":"https://git.kernel.org/stable/c/b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12","name":"https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/92f581cac93a71723456ac79ef54d9f60a251b42","name":"https://git.kernel.org/stable/c/92f581cac93a71723456ac79ef54d9f60a251b42","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1","name":"https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596","name":"https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98015","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98015","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 10caabdaad5ace85577a453da97d1f8d3b944427 e3ee194a790896fa92fea20b5385a354be2f2c12 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 10caabdaad5ace85577a453da97d1f8d3b944427 b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 10caabdaad5ace85577a453da97d1f8d3b944427 92f581cac93a71723456ac79ef54d9f60a251b42 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 10caabdaad5ace85577a453da97d1f8d3b944427 a5833fdf53350b8b95a558fcf0056ddb1c0fe154 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.222 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.189 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.7 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98015","cve":"CVE-2026-98015","epss":"0.001760000","percentile":"0.065330000","score_date":"2026-10-05","updated_at":"2026-10-06 00:14:18"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e3ee194a790896fa92fea20b5385a354be2f2c12","status":"affected","version":"10caabdaad5ace85577a453da97d1f8d3b944427","versionType":"git"},{"lessThan":"b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797","status":"affected","version":"10caabdaad5ace85577a453da97d1f8d3b944427","versionType":"git"},{"lessThan":"92f581cac93a71723456ac79ef54d9f60a251b42","status":"affected","version":"10caabdaad5ace85577a453da97d1f8d3b944427","versionType":"git"},{"lessThan":"a5833fdf53350b8b95a558fcf0056ddb1c0fe154","status":"affected","version":"10caabdaad5ace85577a453da97d1f8d3b944427","versionType":"git"},{"lessThan":"304ea40ef4561671503c36e47da44a0a31b71e36","status":"affected","version":"10caabdaad5ace85577a453da97d1f8d3b944427","versionType":"git"},{"lessThan":"e393789e92310d7c66f57c876101779c90816a12","status":"affected","version":"10caabdaad5ace85577a453da97d1f8d3b944427","versionType":"git"},{"lessThan":"18b2969073879b9cce24e1a78b118bdad54518d1","status":"affected","version":"10caabdaad5ace85577a453da97d1f8d3b944427","versionType":"git"},{"lessThan":"7ee07f601f8f507c9faf25c68a49396ab8950596","status":"affected","version":"10caabdaad5ace85577a453da97d1f8d3b944427","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.3"},{"lessThan":"5.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.271","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.222","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.271","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.222","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.7","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc3","versionStartIncluding":"5.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put\n\nIn mlx5_eswitch_termtbl_put(), the zero-ref cleanup check reads\ntt->ref_count after termtbl_mutex has been released.  Two concurrent\ncallers on the same mlx5_termtbl_handle race: one decrements ref_count\nto zero, removes the hash entry, and calls kfree(tt) while the other\nhas already dropped the mutex and is about to evaluate\nif (!tt->ref_count), producing a use-after-free.\n\nFix this by capturing the result of the decrement into a stack-local\nlast variable before dropping the mutex.  The cleanup decision is now\nmade entirely under termtbl_mutex, and tt is not touched after\nkfree."}],"providerMetadata":{"dateUpdated":"2026-10-03T11:01:36.115Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e3ee194a790896fa92fea20b5385a354be2f2c12"},{"url":"https://git.kernel.org/stable/c/b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797"},{"url":"https://git.kernel.org/stable/c/92f581cac93a71723456ac79ef54d9f60a251b42"},{"url":"https://git.kernel.org/stable/c/a5833fdf53350b8b95a558fcf0056ddb1c0fe154"},{"url":"https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36"},{"url":"https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12"},{"url":"https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1"},{"url":"https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596"}],"title":"net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98015","datePublished":"2026-09-25T10:23:37.724Z","dateReserved":"2026-09-25T10:19:56.069Z","dateUpdated":"2026-10-03T11:01:36.115Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-25 11:17:29","lastModifiedDate":"2026-10-03 11:18:24","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98015","Ordinal":"1","Title":"net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_p","CVE":"CVE-2026-98015","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98015","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put\n\nIn mlx5_eswitch_termtbl_put(), the zero-ref cleanup check reads\ntt->ref_count after termtbl_mutex has been released.  Two concurrent\ncallers on the same mlx5_termtbl_handle race: one decrements ref_count\nto zero, removes the hash entry, and calls kfree(tt) while the other\nhas already dropped the mutex and is about to evaluate\nif (!tt->ref_count), producing a use-after-free.\n\nFix this by capturing the result of the decrement into a stack-local\nlast variable before dropping the mutex.  The cleanup decision is now\nmade entirely under termtbl_mutex, and tt is not touched after\nkfree.","Type":"Description","Title":"net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_p"}]}}}