CVE-2026-93263

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93263", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.097Z", "datePublished": "2026-09-24T15:52:02.877Z", "dateUpdated": "2026-10-19T09:08:16.442Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:08:16.442Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: eswin: Zero-initialize stack-allocated clk_init_data\n\neswin_clk_register_pll() and eswin_register_clkdiv() declare a struct\nclk_init_data on the stack and only initialize some of its fields\n(parent_data respectively parent_hws). clk_core_populate_parent_map()\nchecks parent_names first and parent_data second before falling back\nto parent_hws, so leftover stack garbage in the uninitialized fields\nhijacks parent resolution and the clk core dereferences a bogus\npointer:\n\n Unable to handle kernel NULL pointer dereference at virtual address 000000000000000c\n Oops [#1]\n epc : __clk_register+0x31a/0x7f0\n [<ffffffff805dc774>] __clk_register+0x31a/0x7f0\n [<ffffffff805dcd76>] devm_clk_hw_register+0x2a/0x94\n [<ffffffff805e319a>] eswin_register_clkdiv+0x80/0xd0\n [<ffffffff805e34a0>] eswin_clk_register_clks+0x162/0x1a0\n [<ffffffff805e3736>] eic7700_clk_probe+0x146/0x180\n [<ffffffff8065d23c>] platform_probe+0x3c/0x7a\n\nObserved on EIC7700 hardware (with the driver backported to a 6.17\ntree); whether the bug triggers depends entirely on what the stack\nhappens to contain when the registration helpers run.\n\nZero-initialize both structures."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/clk/eswin/clk.c"], "versions": [{"version": "cd44f127c1d42833a32ba0a0965255ee6184f8c1", "lessThan": "1183dc2450a268a536a15da8b106ec520cdbd19f", "status": "affected", "versionType": "git"}, {"version": "cd44f127c1d42833a32ba0a0965255ee6184f8c1", "lessThan": "011d8de504bc84402aabc1dda1cf0552fe9a5af2", "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/clk/eswin/clk.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "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": "7.1", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1183dc2450a268a536a15da8b106ec520cdbd19f"}, {"url": "https://git.kernel.org/stable/c/011d8de504bc84402aabc1dda1cf0552fe9a5af2"}], "title": "clk: eswin: Zero-initialize stack-allocated clk_init_data", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/clk/eswin/clk.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "1183dc2450a268a536a15da8b106ec520cdbd19f", "status": "affected", "version": "cd44f127c1d42833a32ba0a0965255ee6184f8c1", "versionType": "git"}, {"lessThan": "011d8de504bc84402aabc1dda1cf0552fe9a5af2", "status": "affected", "version": "cd44f127c1d42833a32ba0a0965255ee6184f8c1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/clk/eswin/clk.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.1"}, {"lessThan": "7.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "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\nclk: eswin: Zero-initialize stack-allocated clk_init_data\n\neswin_clk_register_pll() and eswin_register_clkdiv() declare a struct\nclk_init_data on the stack and only initialize some of its fields\n(parent_data respectively parent_hws). clk_core_populate_parent_map()\nchecks parent_names first and parent_data second before falling back\nto parent_hws, so leftover stack garbage in the uninitialized fields\nhijacks parent resolution and the clk core dereferences a bogus\npointer:\n\n Unable to handle kernel NULL pointer dereference at virtual address 000000000000000c\n Oops [#1]\n epc : __clk_register+0x31a/0x7f0\n [<ffffffff805dc774>] __clk_register+0x31a/0x7f0\n [<ffffffff805dcd76>] devm_clk_hw_register+0x2a/0x94\n [<ffffffff805e319a>] eswin_register_clkdiv+0x80/0xd0\n [<ffffffff805e34a0>] eswin_clk_register_clks+0x162/0x1a0\n [<ffffffff805e3736>] eic7700_clk_probe+0x146/0x180\n [<ffffffff8065d23c>] platform_probe+0x3c/0x7a\n\nObserved on EIC7700 hardware (with the driver backported to a 6.17\ntree); whether the bug triggers depends entirely on what the stack\nhappens to contain when the registration helpers run.\n\nZero-initialize both structures."}], "id": "CVE-2026-93263", "lastModified": "2026-10-19T10:17:17.657", "metrics": {}, "published": "2026-09-24T16:17:23.067", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/011d8de504bc84402aabc1dda1cf0552fe9a5af2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1183dc2450a268a536a15da8b106ec520cdbd19f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: clk: eswin: Zero-initialize stack-allocated clk_init_data", "id": "2540357", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540357"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nclk: eswin: Zero-initialize stack-allocated clk_init_data\neswin_clk_register_pll() and eswin_register_clkdiv() declare a struct\nclk_init_data on the stack and only initialize some of its fields\n(parent_data respectively parent_hws). clk_core_populate_parent_map()\nchecks parent_names first and parent_data second before falling back\nto parent_hws, so leftover stack garbage in the uninitialized fields\nhijacks parent resolution and the clk core dereferences a bogus\npointer:\nUnable to handle kernel NULL pointer dereference at virtual address 000000000000000c\nOops [#1]\nepc : __clk_register+0x31a/0x7f0\n[<ffffffff805dc774>] __clk_register+0x31a/0x7f0\n[<ffffffff805dcd76>] devm_clk_hw_register+0x2a/0x94\n[<ffffffff805e319a>] eswin_register_clkdiv+0x80/0xd0\n[<ffffffff805e34a0>] eswin_clk_register_clks+0x162/0x1a0\n[<ffffffff805e3736>] eic7700_clk_probe+0x146/0x180\n[<ffffffff8065d23c>] platform_probe+0x3c/0x7a\nObserved on EIC7700 hardware (with the driver backported to a 6.17\ntree); whether the bug triggers depends entirely on what the stack\nhappens to contain when the registration helpers run.\nZero-initialize both structures.", "A flaw was found in the Linux kernel's ESWIN clock driver. Due to uninitialized stack memory during clock registration, leftover data can cause the clock framework to dereference an invalid pointer. This issue can trigger a kernel crash during device initialization, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-93263", "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": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93263\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93263\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93263.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cd44f127c1d42833a32ba0a0965255ee6184f8c1,1183dc2450a268a536a15da8b106ec520cdbd19f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[cd44f127c1d42833a32ba0a0965255ee6184f8c1,011d8de504bc84402aabc1dda1cf0552fe9a5af2)"}}], "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": "7.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,7.1)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "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": "2026-09-25T04:15:13.334543+00:00", "updated": "2026-10-01T23:15:16.131381+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}