CVE-2026-99019

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99019", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.386Z", "datePublished": "2026-10-23T12:20:55.832Z", "dateUpdated": "2026-10-30T12:40:58.753Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:40:58.753Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ch: Do not keep references to data transfer element devices\n\nch_readconfig() looks up the scsi_device of every data transfer element\nwhose SCSI id the changer reports in READ ELEMENT STATUS, and stores it in\nch->dt[]. scsi_device_lookup() takes a reference, and nothing ever drops\nit: ch_destroy() frees the array with kfree(). ch->dt[] is read nowhere\nelse - it only supplies the vendor, model and revision printed in the same\nloop.\n\nOnce such a drive is removed, its scsi_device can never be released. It\nstays on the host's device list at its address, so a new device there is\nrefused by anything that walks the list - target_core_pscsi reports\n\"scsi_device_get() failed for H:C:T:L\" - and the low-level driver's module\ncan no longer be unloaded. Only a reboot recovers.\n\nIt shows with any changer that reports its drives' ids; with the mhvtl\nvirtual library (IBM 3573-TL personality), each create and remove of a\nlibrary with four drives leaves four references behind, counted by the\nmodule's use count in lsmod. With ch not bound the count is unchanged, and\nwith this patch applied it is unchanged too.\n\nDrop the reference as soon as the name has been printed, and remove the now\nunused dt[] array. That also removes the array leaked when ch_probe() fails\nafter ch_readconfig().\n\nThe same leak was reported with an RFC patch in 2022, which was not merged."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/scsi/ch.c"], "versions": [{"version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "lessThan": "7412c6fb671dda9776deebb283daf0bb2f1b48e5", "status": "affected", "versionType": "git"}, {"version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "lessThan": "03287b176e8f7cc5680a7053e2d53bd5cb05d80c", "status": "affected", "versionType": "git"}, {"version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "lessThan": "72ad7b08ffd5d9495715db0d74ce325a485f1b52", "status": "affected", "versionType": "git"}, {"version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "lessThan": "ec6ecab1b7577ae555ee6b81480814d123dd9ec0", "status": "affected", "versionType": "git"}, {"version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "lessThan": "cef2cedb6f7a394b278775b3d6ffb9b20ecd61db", "status": "affected", "versionType": "git"}, {"version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "lessThan": "a34a230ccea1b8b667ae59dca11295a2c8f81738", "status": "affected", "versionType": "git"}, {"version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "lessThan": "1d35a17f1c2ed4154731895694a1a3557f0da766", "status": "affected", "versionType": "git"}, {"version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "lessThan": "27c0f718d3b3c99e6d315308e95d987d0382a8a8", "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/scsi/ch.c"], "versions": [{"version": "2.6.13", "status": "affected"}, {"version": "0", "lessThan": "2.6.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "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": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.58", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.11", "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": "2.6.13", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "6.18.58"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "7.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.13", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7412c6fb671dda9776deebb283daf0bb2f1b48e5"}, {"url": "https://git.kernel.org/stable/c/03287b176e8f7cc5680a7053e2d53bd5cb05d80c"}, {"url": "https://git.kernel.org/stable/c/72ad7b08ffd5d9495715db0d74ce325a485f1b52"}, {"url": "https://git.kernel.org/stable/c/ec6ecab1b7577ae555ee6b81480814d123dd9ec0"}, {"url": "https://git.kernel.org/stable/c/cef2cedb6f7a394b278775b3d6ffb9b20ecd61db"}, {"url": "https://git.kernel.org/stable/c/a34a230ccea1b8b667ae59dca11295a2c8f81738"}, {"url": "https://git.kernel.org/stable/c/1d35a17f1c2ed4154731895694a1a3557f0da766"}, {"url": "https://git.kernel.org/stable/c/27c0f718d3b3c99e6d315308e95d987d0382a8a8"}], "title": "scsi: ch: Do not keep references to data transfer element devices", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/scsi/ch.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7412c6fb671dda9776deebb283daf0bb2f1b48e5", "status": "affected", "version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "versionType": "git"}, {"lessThan": "03287b176e8f7cc5680a7053e2d53bd5cb05d80c", "status": "affected", "version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "versionType": "git"}, {"lessThan": "72ad7b08ffd5d9495715db0d74ce325a485f1b52", "status": "affected", "version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "versionType": "git"}, {"lessThan": "ec6ecab1b7577ae555ee6b81480814d123dd9ec0", "status": "affected", "version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "versionType": "git"}, {"lessThan": "cef2cedb6f7a394b278775b3d6ffb9b20ecd61db", "status": "affected", "version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "versionType": "git"}, {"lessThan": "a34a230ccea1b8b667ae59dca11295a2c8f81738", "status": "affected", "version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "versionType": "git"}, {"lessThan": "1d35a17f1c2ed4154731895694a1a3557f0da766", "status": "affected", "version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "versionType": "git"}, {"lessThan": "27c0f718d3b3c99e6d315308e95d987d0382a8a8", "status": "affected", "version": "daa6eda65a53e5addf86c6bc829129ff51b08bda", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/scsi/ch.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.13"}, {"lessThan": "2.6.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "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": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.58", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.11", "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\nscsi: ch: Do not keep references to data transfer element devices\n\nch_readconfig() looks up the scsi_device of every data transfer element\nwhose SCSI id the changer reports in READ ELEMENT STATUS, and stores it in\nch->dt[]. scsi_device_lookup() takes a reference, and nothing ever drops\nit: ch_destroy() frees the array with kfree(). ch->dt[] is read nowhere\nelse - it only supplies the vendor, model and revision printed in the same\nloop.\n\nOnce such a drive is removed, its scsi_device can never be released. It\nstays on the host's device list at its address, so a new device there is\nrefused by anything that walks the list - target_core_pscsi reports\n\"scsi_device_get() failed for H:C:T:L\" - and the low-level driver's module\ncan no longer be unloaded. Only a reboot recovers.\n\nIt shows with any changer that reports its drives' ids; with the mhvtl\nvirtual library (IBM 3573-TL personality), each create and remove of a\nlibrary with four drives leaves four references behind, counted by the\nmodule's use count in lsmod. With ch not bound the count is unchanged, and\nwith this patch applied it is unchanged too.\n\nDrop the reference as soon as the name has been printed, and remove the now\nunused dt[] array. That also removes the array leaked when ch_probe() fails\nafter ch_readconfig().\n\nThe same leak was reported with an RFC patch in 2022, which was not merged."}], "id": "CVE-2026-99019", "lastModified": "2026-10-30T13:21:37.843", "metrics": {}, "published": "2026-10-23T13:17:24.770", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/03287b176e8f7cc5680a7053e2d53bd5cb05d80c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1d35a17f1c2ed4154731895694a1a3557f0da766"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/27c0f718d3b3c99e6d315308e95d987d0382a8a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/72ad7b08ffd5d9495715db0d74ce325a485f1b52"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7412c6fb671dda9776deebb283daf0bb2f1b48e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a34a230ccea1b8b667ae59dca11295a2c8f81738"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cef2cedb6f7a394b278775b3d6ffb9b20ecd61db"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ec6ecab1b7577ae555ee6b81480814d123dd9ec0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: kernel: Denial of Service via reference count leak in SCSI changer driver", "id": "2559700", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559700"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: ch: Do not keep references to data transfer element devices\nch_readconfig() looks up the scsi_device of every data transfer element\nwhose SCSI id the changer reports in READ ELEMENT STATUS, and stores it in\nch->dt[]. scsi_device_lookup() takes a reference, and nothing ever drops\nit: ch_destroy() frees the array with kfree(). ch->dt[] is read nowhere\nelse - it only supplies the vendor, model and revision printed in the same\nloop.\nOnce such a drive is removed, its scsi_device can never be released. It\nstays on the host's device list at its address, so a new device there is\nrefused by anything that walks the list - target_core_pscsi reports\n\"scsi_device_get() failed for H:C:T:L\" - and the low-level driver's module\ncan no longer be unloaded. Only a reboot recovers.\nIt shows with any changer that reports its drives' ids; with the mhvtl\nvirtual library (IBM 3573-TL personality), each create and remove of a\nlibrary with four drives leaves four references behind, counted by the\nmodule's use count in lsmod. With ch not bound the count is unchanged, and\nwith this patch applied it is unchanged too.\nDrop the reference as soon as the name has been printed, and remove the now\nunused dt[] array. That also removes the array leaked when ch_probe() fails\nafter ch_readconfig().\nThe same leak was reported with an RFC patch in 2022, which was not merged.", "A flaw was found in the Linux kernel's SCSI changer driver, which can lead to a Denial of Service (DoS). The driver retains unreleased device references after reading changer configuration data, preventing removed devices from being properly cleaned up. An attacker or local user interacting with SCSI media changer devices can exploit this reference count leak to block subsequent device registration and prevent driver module unloading, requiring a system reboot to recover."], "name": "CVE-2026-99019", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not 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": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-23T12:20:55Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-99019\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-99019\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99019.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,ec6ecab1b7577ae555ee6b81480814d123dd9ec0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,cef2cedb6f7a394b278775b3d6ffb9b20ecd61db)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,a34a230ccea1b8b667ae59dca11295a2c8f81738)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,1d35a17f1c2ed4154731895694a1a3557f0da766)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,27c0f718d3b3c99e6d315308e95d987d0382a8a8)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.160,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.114,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.58,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.11,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,ec6ecab1b7577ae555ee6b81480814d123dd9ec0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,cef2cedb6f7a394b278775b3d6ffb9b20ecd61db)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,a34a230ccea1b8b667ae59dca11295a2c8f81738)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,1d35a17f1c2ed4154731895694a1a3557f0da766)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[daa6eda65a53e5addf86c6bc829129ff51b08bda,27c0f718d3b3c99e6d315308e95d987d0382a8a8)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.160,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.114,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.58,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.11,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-23T17:00:15.614918+00:00", "updated": "2026-10-29T20:00:29.073369+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}