CVE-2026-98015

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98015", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:19:56.069Z", "datePublished": "2026-09-25T10:23:37.724Z", "dateUpdated": "2026-10-19T09:12:20.637Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:12:20.637Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"], "versions": [{"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "e3ee194a790896fa92fea20b5385a354be2f2c12", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "92f581cac93a71723456ac79ef54d9f60a251b42", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "a5833fdf53350b8b95a558fcf0056ddb1c0fe154", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "304ea40ef4561671503c36e47da44a0a31b71e36", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "e393789e92310d7c66f57c876101779c90816a12", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "18b2969073879b9cce24e1a78b118bdad54518d1", "status": "affected", "versionType": "git"}, {"version": "10caabdaad5ace85577a453da97d1f8d3b944427", "lessThan": "7ee07f601f8f507c9faf25c68a49396ab8950596", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.3"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-98015", "lastModified": "2026-10-19T10:17:55.007", "metrics": {}, "published": "2026-09-25T11:17:29.927", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18b2969073879b9cce24e1a78b118bdad54518d1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/304ea40ef4561671503c36e47da44a0a31b71e36"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7ee07f601f8f507c9faf25c68a49396ab8950596"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/92f581cac93a71723456ac79ef54d9f60a251b42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a5833fdf53350b8b95a558fcf0056ddb1c0fe154"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b1398c9dfb5d3d4faaf6905ff7d98110a5d2c797"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e393789e92310d7c66f57c876101779c90816a12"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e3ee194a790896fa92fea20b5385a354be2f2c12"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put", "id": "2541026", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541026"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put\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.\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.", "A flaw was found in the Linux kernel's mlx5 driver. A local attacker can cause a Denial of Service (DoS) via a use-after-free vulnerability in the network switch offload mechanism. This issue arises when concurrent operations race while releasing termination table handles in the mlx5_eswitch_termtbl_put() function, allowing memory to be accessed after it has already been freed."], "name": "CVE-2026-98015", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98015\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98015\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98015.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[10caabdaad5ace85577a453da97d1f8d3b944427,304ea40ef4561671503c36e47da44a0a31b71e36)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[10caabdaad5ace85577a453da97d1f8d3b944427,e393789e92310d7c66f57c876101779c90816a12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[10caabdaad5ace85577a453da97d1f8d3b944427,18b2969073879b9cce24e1a78b118bdad54518d1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[10caabdaad5ace85577a453da97d1f8d3b944427,7ee07f601f8f507c9faf25c68a49396ab8950596)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.3"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T15:30:06.905227+00:00", "updated": "2026-10-01T01:45:16.946660+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}