{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40347", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.187Z", "datePublished": "2025-12-16T13:30:21.539Z", "dateUpdated": "2026-05-11T21:47:36.548Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:47:36.548Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: fix the deadlock of enetc_mdio_lock\n\nAfter applying the workaround for err050089, the LS1028A platform\nexperiences RCU stalls on RT kernel. This issue is caused by the\nrecursive acquisition of the read lock enetc_mdio_lock. Here list some\nof the call stacks identified under the enetc_poll path that may lead to\na deadlock:\n\nenetc_poll\n -> enetc_lock_mdio\n -> enetc_clean_rx_ring OR napi_complete_done\n -> napi_gro_receive\n -> enetc_start_xmit\n -> enetc_lock_mdio\n -> enetc_map_tx_buffs\n -> enetc_unlock_mdio\n -> enetc_unlock_mdio\n\nAfter enetc_poll acquires the read lock, a higher-priority writer attempts\nto acquire the lock, causing preemption. The writer detects that a\nread lock is already held and is scheduled out. However, readers under\nenetc_poll cannot acquire the read lock again because a writer is already\nwaiting, leading to a thread hang.\n\nCurrently, the deadlock is avoided by adjusting enetc_lock_mdio to prevent\nrecursive lock acquisition."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/freescale/enetc/enetc.c"], "versions": [{"version": "6d36ecdbc4410e61a0e02adc5d3abeee22a8ffd3", "lessThan": "2781ca82ce8cad263d80b617addb727e6a84c9e5", "status": "affected", "versionType": "git"}, {"version": "6d36ecdbc4410e61a0e02adc5d3abeee22a8ffd3", "lessThan": "1f92f5bd057a4fad9dab6af17963cdd21e5da6ed", "status": "affected", "versionType": "git"}, {"version": "6d36ecdbc4410e61a0e02adc5d3abeee22a8ffd3", "lessThan": "2e55a49dc3b2a6b23329e4fbbd8a5feb20e220aa", "status": "affected", "versionType": "git"}, {"version": "6d36ecdbc4410e61a0e02adc5d3abeee22a8ffd3", "lessThan": "50bd33f6b3922a6b760aa30d409cae891cec8fb5", "status": "affected", "versionType": "git"}, {"version": "bf9c564716a13dde6a990d3b02c27cd6e39608bf", "status": "affected", "versionType": "git"}, {"version": "ff966263f5f9fdf9740f03fed0762ce73c230a6a", "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/freescale/enetc/enetc.c"], "versions": [{"version": "5.12", "status": "affected"}, {"version": "0", "lessThan": "5.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.115", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.56", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.6", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "5.12", "versionEndExcluding": "6.6.115"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.12.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.17.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.12", "versionEndExcluding": "6.18"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11.7"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2781ca82ce8cad263d80b617addb727e6a84c9e5"}, {"url": "https://git.kernel.org/stable/c/1f92f5bd057a4fad9dab6af17963cdd21e5da6ed"}, {"url": "https://git.kernel.org/stable/c/2e55a49dc3b2a6b23329e4fbbd8a5feb20e220aa"}, {"url": "https://git.kernel.org/stable/c/50bd33f6b3922a6b760aa30d409cae891cec8fb5"}], "title": "net: enetc: fix the deadlock of enetc_mdio_lock", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: fix the deadlock of enetc_mdio_lock\n\nAfter applying the workaround for err050089, the LS1028A platform\nexperiences RCU stalls on RT kernel. This issue is caused by the\nrecursive acquisition of the read lock enetc_mdio_lock. Here list some\nof the call stacks identified under the enetc_poll path that may lead to\na deadlock:\n\nenetc_poll\n -> enetc_lock_mdio\n -> enetc_clean_rx_ring OR napi_complete_done\n -> napi_gro_receive\n -> enetc_start_xmit\n -> enetc_lock_mdio\n -> enetc_map_tx_buffs\n -> enetc_unlock_mdio\n -> enetc_unlock_mdio\n\nAfter enetc_poll acquires the read lock, a higher-priority writer attempts\nto acquire the lock, causing preemption. The writer detects that a\nread lock is already held and is scheduled out. However, readers under\nenetc_poll cannot acquire the read lock again because a writer is already\nwaiting, leading to a thread hang.\n\nCurrently, the deadlock is avoided by adjusting enetc_lock_mdio to prevent\nrecursive lock acquisition."}], "id": "CVE-2025-40347", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-16T14:15:46.470", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1f92f5bd057a4fad9dab6af17963cdd21e5da6ed"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2781ca82ce8cad263d80b617addb727e6a84c9e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e55a49dc3b2a6b23329e4fbbd8a5feb20e220aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/50bd33f6b3922a6b760aa30d409cae891cec8fb5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: net: enetc: fix the deadlock of enetc_mdio_lock", "id": "2422720", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422720"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-40347", "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": "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"}], "public_date": "2025-12-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40347\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40347\nhttps://lore.kernel.org/linux-cve-announce/2025121634-CVE-2025-40347-275c@gregkh/T"], "threat_severity": "Important"}

{}