CVE-2026-98795

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98795", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.370Z", "datePublished": "2026-10-18T15:48:39.633Z", "dateUpdated": "2026-10-19T09:25:48.008Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:25:48.008Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sparx5: skip ptp deinit if init was skipped\n\nsparx5_ptp_init() returns early on the base lan969x variants\nbecause they do not have the SPX5_FEATURE_PTP flag. It also returns early\nwhen no \"ptp\" interrupt is described. Unbinding the driver then causes a\nNULL pointer dereference when cleaning up uninitialized tx_skbs queues:\n\n Unable to handle kernel NULL pointer dereference at virtual address\n 0000000000000008\n Call trace:\n skb_queue_purge_reason+0x68/0x120 (P)\n sparx5_ptp_deinit+0x64/0xc0\n mchp_sparx5_remove+0x38/0x70\n platform_remove+0x20/0x30\n device_remove+0x4c/0x80\n\nBefore per-port tx_skbs were added, a NULL dereference would have happened\nwhen calling ptp_clock_unregister() on the never-registered PTP clocks.\n\nFix by returning early in sparx5_ptp_deinit() if PTP is not used."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c"], "versions": [{"version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff", "lessThan": "35c706d6eb1963735814c5f5bb2674a96eacf3cc", "status": "affected", "versionType": "git"}, {"version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff", "lessThan": "2879b65bfa548e10d59c5fba91d17f8a00cd7029", "status": "affected", "versionType": "git"}, {"version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff", "lessThan": "0d2c49915bc3aea4521cda5e4d42f24f63b94585", "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/microchip/sparx5/sparx5_ptp.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "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": "5.18", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/35c706d6eb1963735814c5f5bb2674a96eacf3cc"}, {"url": "https://git.kernel.org/stable/c/2879b65bfa548e10d59c5fba91d17f8a00cd7029"}, {"url": "https://git.kernel.org/stable/c/0d2c49915bc3aea4521cda5e4d42f24f63b94585"}], "title": "net: sparx5: skip ptp deinit if init was skipped", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "35c706d6eb1963735814c5f5bb2674a96eacf3cc", "status": "affected", "version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff", "versionType": "git"}, {"lessThan": "2879b65bfa548e10d59c5fba91d17f8a00cd7029", "status": "affected", "version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff", "versionType": "git"}, {"lessThan": "0d2c49915bc3aea4521cda5e4d42f24f63b94585", "status": "affected", "version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.18"}, {"lessThan": "5.18", "status": "unaffected", "version": "0", "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\nnet: sparx5: skip ptp deinit if init was skipped\n\nsparx5_ptp_init() returns early on the base lan969x variants\nbecause they do not have the SPX5_FEATURE_PTP flag. It also returns early\nwhen no \"ptp\" interrupt is described. Unbinding the driver then causes a\nNULL pointer dereference when cleaning up uninitialized tx_skbs queues:\n\n Unable to handle kernel NULL pointer dereference at virtual address\n 0000000000000008\n Call trace:\n skb_queue_purge_reason+0x68/0x120 (P)\n sparx5_ptp_deinit+0x64/0xc0\n mchp_sparx5_remove+0x38/0x70\n platform_remove+0x20/0x30\n device_remove+0x4c/0x80\n\nBefore per-port tx_skbs were added, a NULL dereference would have happened\nwhen calling ptp_clock_unregister() on the never-registered PTP clocks.\n\nFix by returning early in sparx5_ptp_deinit() if PTP is not used."}], "id": "CVE-2026-98795", "lastModified": "2026-10-19T10:19:43.517", "metrics": {}, "published": "2026-10-18T16:17:33.490", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d2c49915bc3aea4521cda5e4d42f24f63b94585"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2879b65bfa548e10d59c5fba91d17f8a00cd7029"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/35c706d6eb1963735814c5f5bb2674a96eacf3cc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: sparx5: skip ptp deinit if init was skipped", "id": "2555166", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555166"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: sparx5: skip ptp deinit if init was skipped\nsparx5_ptp_init() returns early on the base lan969x variants\nbecause they do not have the SPX5_FEATURE_PTP flag. It also returns early\nwhen no \"ptp\" interrupt is described. Unbinding the driver then causes a\nNULL pointer dereference when cleaning up uninitialized tx_skbs queues:\nUnable to handle kernel NULL pointer dereference at virtual address\n0000000000000008\nCall trace:\nskb_queue_purge_reason+0x68/0x120 (P)\nsparx5_ptp_deinit+0x64/0xc0\nmchp_sparx5_remove+0x38/0x70\nplatform_remove+0x20/0x30\ndevice_remove+0x4c/0x80\nBefore per-port tx_skbs were added, a NULL dereference would have happened\nwhen calling ptp_clock_unregister() on the never-registered PTP clocks.\nFix by returning early in sparx5_ptp_deinit() if PTP is not used.", "A flaw was found in the Linux kernel's Microchip Sparx5 network driver. When operating on devices where Precision Time Protocol (PTP) initialization is skipped, the driver does not check if PTP was initialized before executing its deinitialization routines. A local privileged user could trigger this vulnerability by unbinding the driver or removing the device, resulting in a NULL pointer dereference, kernel crash, and Denial of Service (DoS)."], "name": "CVE-2026-98795", "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": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98795\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98795\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98795.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0933bd04047c3b96ba49545a8f91e7e6f8f666ff,35c706d6eb1963735814c5f5bb2674a96eacf3cc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0933bd04047c3b96ba49545a8f91e7e6f8f666ff,2879b65bfa548e10d59c5fba91d17f8a00cd7029)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0933bd04047c3b96ba49545a8f91e7e6f8f666ff,0d2c49915bc3aea4521cda5e4d42f24f63b94585)"}}], "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": "5.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.18)"}}, {"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,*]"}}], "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": "2026-10-18T21:45:05.269347+00:00", "updated": "2026-10-24T01:45:17.370630+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}