CVE-2026-98725

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98725", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.366Z", "datePublished": "2026-10-18T15:47:02.735Z", "dateUpdated": "2026-10-30T12:39:06.682Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:39:06.682Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()\n\nnvmet_auth_challenge() receives its output buffer as a void pointer.\nsizeof(*d) therefore evaluates to one with GCC and undercounts the fixed\nchallenge header by 15 bytes. A short AUTH_RECEIVE buffer can pass the\ncheck before the challenge is copied past the end of its allocation.\n\nUse the typed challenge pointer when calculating the response size.\n\n BUG: KASAN: slab-out-of-bounds in nvmet_execute_auth_receive (drivers/nvme/target/fabrics-cmd-auth.c:442 drivers/nvme/target/fabrics-cmd-auth.c:569)\n Write of size 32 by task kworker/1:1H/64\n Workqueue: nvmet_tcp_wq nvmet_tcp_io_work\n Call Trace:\n nvmet_execute_auth_receive (drivers/nvme/target/fabrics-cmd-auth.c:442 drivers/nvme/target/fabrics-cmd-auth.c:569)\n nvmet_tcp_try_recv_pdu (drivers/nvme/target/tcp.c:1119 drivers/nvme/target/tcp.c:1243)\n nvmet_tcp_io_work (drivers/nvme/target/tcp.c:1350 drivers/nvme/target/tcp.c:1382 drivers/nvme/target/tcp.c:1445)\n process_one_work (kernel/workqueue.c:3322)\n worker_thread (kernel/workqueue.c:3405 kernel/workqueue.c:3486)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:158)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n The buggy address is located 16 bytes inside of\n allocated 33-byte region [ffff888000554e80, ffff888000554ea1)\n Kernel panic - not syncing: KASAN: panic_on_warn set ..."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/nvme/target/fabrics-cmd-auth.c"], "versions": [{"version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "lessThan": "e94ff1771c4cb398749789557f0b6feb871e3486", "status": "affected", "versionType": "git"}, {"version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "lessThan": "ef4dfad231a787aded76e5b03788ddb18c8aebab", "status": "affected", "versionType": "git"}, {"version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "lessThan": "9d61131acd742cf97ee64e453383e41b46568513", "status": "affected", "versionType": "git"}, {"version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "lessThan": "7fd3c363eba4f2aceb4b3f31cd1cf65e0dcbaee4", "status": "affected", "versionType": "git"}, {"version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "lessThan": "8a9b4c0eef19c207663c1ee888257307c869ca86", "status": "affected", "versionType": "git"}, {"version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "lessThan": "fa6778e030bed9841ddcdf96bc7018da9ac03562", "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/nvme/target/fabrics-cmd-auth.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "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": "6.0", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e94ff1771c4cb398749789557f0b6feb871e3486"}, {"url": "https://git.kernel.org/stable/c/ef4dfad231a787aded76e5b03788ddb18c8aebab"}, {"url": "https://git.kernel.org/stable/c/9d61131acd742cf97ee64e453383e41b46568513"}, {"url": "https://git.kernel.org/stable/c/7fd3c363eba4f2aceb4b3f31cd1cf65e0dcbaee4"}, {"url": "https://git.kernel.org/stable/c/8a9b4c0eef19c207663c1ee888257307c869ca86"}, {"url": "https://git.kernel.org/stable/c/fa6778e030bed9841ddcdf96bc7018da9ac03562"}], "title": "nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/nvme/target/fabrics-cmd-auth.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e94ff1771c4cb398749789557f0b6feb871e3486", "status": "affected", "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "versionType": "git"}, {"lessThan": "ef4dfad231a787aded76e5b03788ddb18c8aebab", "status": "affected", "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "versionType": "git"}, {"lessThan": "9d61131acd742cf97ee64e453383e41b46568513", "status": "affected", "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "versionType": "git"}, {"lessThan": "7fd3c363eba4f2aceb4b3f31cd1cf65e0dcbaee4", "status": "affected", "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "versionType": "git"}, {"lessThan": "8a9b4c0eef19c207663c1ee888257307c869ca86", "status": "affected", "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "versionType": "git"}, {"lessThan": "fa6778e030bed9841ddcdf96bc7018da9ac03562", "status": "affected", "version": "db1312dd95488b5e6ff362ff66fcf953a46b1821", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/nvme/target/fabrics-cmd-auth.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.0"}, {"lessThan": "6.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "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\nnvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()\n\nnvmet_auth_challenge() receives its output buffer as a void pointer.\nsizeof(*d) therefore evaluates to one with GCC and undercounts the fixed\nchallenge header by 15 bytes. A short AUTH_RECEIVE buffer can pass the\ncheck before the challenge is copied past the end of its allocation.\n\nUse the typed challenge pointer when calculating the response size.\n\n BUG: KASAN: slab-out-of-bounds in nvmet_execute_auth_receive (drivers/nvme/target/fabrics-cmd-auth.c:442 drivers/nvme/target/fabrics-cmd-auth.c:569)\n Write of size 32 by task kworker/1:1H/64\n Workqueue: nvmet_tcp_wq nvmet_tcp_io_work\n Call Trace:\n nvmet_execute_auth_receive (drivers/nvme/target/fabrics-cmd-auth.c:442 drivers/nvme/target/fabrics-cmd-auth.c:569)\n nvmet_tcp_try_recv_pdu (drivers/nvme/target/tcp.c:1119 drivers/nvme/target/tcp.c:1243)\n nvmet_tcp_io_work (drivers/nvme/target/tcp.c:1350 drivers/nvme/target/tcp.c:1382 drivers/nvme/target/tcp.c:1445)\n process_one_work (kernel/workqueue.c:3322)\n worker_thread (kernel/workqueue.c:3405 kernel/workqueue.c:3486)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:158)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:245)\n The buggy address is located 16 bytes inside of\n allocated 33-byte region [ffff888000554e80, ffff888000554ea1)\n Kernel panic - not syncing: KASAN: panic_on_warn set ..."}], "id": "CVE-2026-98725", "lastModified": "2026-10-30T13:21:21.280", "metrics": {}, "published": "2026-10-18T16:17:26.120", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7fd3c363eba4f2aceb4b3f31cd1cf65e0dcbaee4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8a9b4c0eef19c207663c1ee888257307c869ca86"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9d61131acd742cf97ee64e453383e41b46568513"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e94ff1771c4cb398749789557f0b6feb871e3486"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ef4dfad231a787aded76e5b03788ddb18c8aebab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fa6778e030bed9841ddcdf96bc7018da9ac03562"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()", "id": "2555068", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555068"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()\nnvmet_auth_challenge() receives its output buffer as a void pointer.\nsizeof(*d) therefore evaluates to one with GCC and undercounts the fixed\nchallenge header by 15 bytes. A short AUTH_RECEIVE buffer can pass the\ncheck before the challenge is copied past the end of its allocation.\nUse the typed challenge pointer when calculating the response size.\nBUG: KASAN: slab-out-of-bounds in nvmet_execute_auth_receive (drivers/nvme/target/fabrics-cmd-auth.c:442 drivers/nvme/target/fabrics-cmd-auth.c:569)\nWrite of size 32 by task kworker/1:1H/64\nWorkqueue: nvmet_tcp_wq nvmet_tcp_io_work\nCall Trace:\nnvmet_execute_auth_receive (drivers/nvme/target/fabrics-cmd-auth.c:442 drivers/nvme/target/fabrics-cmd-auth.c:569)\nnvmet_tcp_try_recv_pdu (drivers/nvme/target/tcp.c:1119 drivers/nvme/target/tcp.c:1243)\nnvmet_tcp_io_work (drivers/nvme/target/tcp.c:1350 drivers/nvme/target/tcp.c:1382 drivers/nvme/target/tcp.c:1445)\nprocess_one_work (kernel/workqueue.c:3322)\nworker_thread (kernel/workqueue.c:3405 kernel/workqueue.c:3486)\nkthread (kernel/kthread.c:436)\nret_from_fork (arch/x86/kernel/process.c:158)\nret_from_fork_asm (arch/x86/entry/entry_64.S:245)\nThe buggy address is located 16 bytes inside of\nallocated 33-byte region [ffff888000554e80, ffff888000554ea1)\nKernel panic - not syncing: KASAN: panic_on_warn set ...", "A flaw was found in the Linux kernel's NVMe over Fabrics (NVMe-oF) target authentication component. A remote attacker connecting to the NVMe target service can exploit this vulnerability by sending a crafted authentication request, causing a Denial of Service (DoS) through a system crash or potential memory corruption. This issue occurs due to an incorrect buffer size calculation during authentication challenge processing, which allows an undersized buffer to bypass validation checks and results in an out-of-bounds write."], "name": "CVE-2026-98725", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not 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": "Not 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": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98725\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98725\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98725.mbox"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[db1312dd95488b5e6ff362ff66fcf953a46b1821,9d61131acd742cf97ee64e453383e41b46568513)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[db1312dd95488b5e6ff362ff66fcf953a46b1821,7fd3c363eba4f2aceb4b3f31cd1cf65e0dcbaee4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[db1312dd95488b5e6ff362ff66fcf953a46b1821,8a9b4c0eef19c207663c1ee888257307c869ca86)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[db1312dd95488b5e6ff362ff66fcf953a46b1821,fa6778e030bed9841ddcdf96bc7018da9ac03562)"}}], "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": "6.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc6,*)"}}], "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": "2026-10-18T19:30:14.460957+00:00", "updated": "2026-10-23T08:00:17.754468+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}