CVE-2026-80999

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80999", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.812Z", "datePublished": "2026-09-11T19:42:53.509Z", "dateUpdated": "2026-10-19T08:46:23.651Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:46:23.651Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: realtek: use gpiod_set_value_cansleep for reset GPIO\n\nrtl83xx_reset_assert() and rtl83xx_reset_deassert() are only called from\nthe probe path, which may sleep and is not timing-critical. When the\nreset GPIO is provided by a sleeping controller such as an I2C I/O\nexpander, gpiod_set_value() warns:\n\n WARNING: drivers/gpio/gpiolib.c:4030 at gpiod_set_value+0x44/0x80, CPU#1: kworker/u16:4/61\n Hardware name: B&O MAP CA33 Rev f (UNKNOWN) (DT)\n Workqueue: events_unbound deferred_probe_work_func\n pc : gpiod_set_value+0x44/0x80\n lr : rtl83xx_probe+0x1d8/0x3a0\n Call trace:\n gpiod_set_value+0x44/0x80 (P)\n rtl83xx_probe+0x1d8/0x3a0\n realtek_mdio_probe+0x24/0xa0\n mdio_probe+0x38/0x78\n really_probe+0xc4/0x3e0\n __driver_probe_device+0x15c/0x1b8\n driver_probe_device+0xb4/0x120\n __device_attach_driver+0xb8/0x1a0\n bus_for_each_drv+0x88/0xf0\n __device_attach+0xa0/0x1d8\n device_initial_probe+0x54/0x68\n bus_probe_device+0x38/0xa0\n deferred_probe_work_func+0xb8/0x120\n process_one_work+0x184/0x4e8\n worker_thread+0x188/0x308\n kthread+0x130/0x150\n ret_from_fork+0x10/0x20\n\nSwitch both helpers to gpiod_set_value_cansleep() so such a reset GPIO can\nbe used without triggering the warning.\n\nThe reset GPIO has been driven with the non-sleeping gpiod_set_value()\nsince the driver was added in v4.19. The call has since been refactored\nacross several files - from realtek-smi.c / realtek-mdio.c into the common\nrtl83xx.c module and then into the rtl83xx_reset_assert() and\nrtl83xx_reset_deassert() helpers (both in v6.9). This patch therefore\napplies as-is only to kernels that carry those helpers (v6.9+); older\nstable kernels need the same gpiod_set_value_cansleep() conversion at the\ncorresponding open-coded call sites."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/dsa/realtek/rtl83xx.c"], "versions": [{"version": "d8652956cf37c5caa8c19e0b99ce5ca235c6d5de", "lessThan": "c32cf5292a0dd70c4afc138b4dc45743a190cd5a", "status": "affected", "versionType": "git"}, {"version": "d8652956cf37c5caa8c19e0b99ce5ca235c6d5de", "lessThan": "f71087e7c63aa3e99bf65d7ddf91eb4fd3545778", "status": "affected", "versionType": "git"}, {"version": "d8652956cf37c5caa8c19e0b99ce5ca235c6d5de", "lessThan": "1610a8c2b93e815e3dc8643a2a69ab1c37975a6a", "status": "affected", "versionType": "git"}, {"version": "d8652956cf37c5caa8c19e0b99ce5ca235c6d5de", "lessThan": "fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc", "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/dsa/realtek/rtl83xx.c"], "versions": [{"version": "4.19", "status": "affected"}, {"version": "0", "lessThan": "4.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "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": "4.19", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c32cf5292a0dd70c4afc138b4dc45743a190cd5a"}, {"url": "https://git.kernel.org/stable/c/f71087e7c63aa3e99bf65d7ddf91eb4fd3545778"}, {"url": "https://git.kernel.org/stable/c/1610a8c2b93e815e3dc8643a2a69ab1c37975a6a"}, {"url": "https://git.kernel.org/stable/c/fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc"}], "title": "net: dsa: realtek: use gpiod_set_value_cansleep for reset GPIO", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/dsa/realtek/rtl83xx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c32cf5292a0dd70c4afc138b4dc45743a190cd5a", "status": "affected", "version": "d8652956cf37c5caa8c19e0b99ce5ca235c6d5de", "versionType": "git"}, {"lessThan": "f71087e7c63aa3e99bf65d7ddf91eb4fd3545778", "status": "affected", "version": "d8652956cf37c5caa8c19e0b99ce5ca235c6d5de", "versionType": "git"}, {"lessThan": "1610a8c2b93e815e3dc8643a2a69ab1c37975a6a", "status": "affected", "version": "d8652956cf37c5caa8c19e0b99ce5ca235c6d5de", "versionType": "git"}, {"lessThan": "fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc", "status": "affected", "version": "d8652956cf37c5caa8c19e0b99ce5ca235c6d5de", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/dsa/realtek/rtl83xx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.19"}, {"lessThan": "4.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "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: dsa: realtek: use gpiod_set_value_cansleep for reset GPIO\n\nrtl83xx_reset_assert() and rtl83xx_reset_deassert() are only called from\nthe probe path, which may sleep and is not timing-critical. When the\nreset GPIO is provided by a sleeping controller such as an I2C I/O\nexpander, gpiod_set_value() warns:\n\n WARNING: drivers/gpio/gpiolib.c:4030 at gpiod_set_value+0x44/0x80, CPU#1: kworker/u16:4/61\n Hardware name: B&O MAP CA33 Rev f (UNKNOWN) (DT)\n Workqueue: events_unbound deferred_probe_work_func\n pc : gpiod_set_value+0x44/0x80\n lr : rtl83xx_probe+0x1d8/0x3a0\n Call trace:\n gpiod_set_value+0x44/0x80 (P)\n rtl83xx_probe+0x1d8/0x3a0\n realtek_mdio_probe+0x24/0xa0\n mdio_probe+0x38/0x78\n really_probe+0xc4/0x3e0\n __driver_probe_device+0x15c/0x1b8\n driver_probe_device+0xb4/0x120\n __device_attach_driver+0xb8/0x1a0\n bus_for_each_drv+0x88/0xf0\n __device_attach+0xa0/0x1d8\n device_initial_probe+0x54/0x68\n bus_probe_device+0x38/0xa0\n deferred_probe_work_func+0xb8/0x120\n process_one_work+0x184/0x4e8\n worker_thread+0x188/0x308\n kthread+0x130/0x150\n ret_from_fork+0x10/0x20\n\nSwitch both helpers to gpiod_set_value_cansleep() so such a reset GPIO can\nbe used without triggering the warning.\n\nThe reset GPIO has been driven with the non-sleeping gpiod_set_value()\nsince the driver was added in v4.19. The call has since been refactored\nacross several files - from realtek-smi.c / realtek-mdio.c into the common\nrtl83xx.c module and then into the rtl83xx_reset_assert() and\nrtl83xx_reset_deassert() helpers (both in v6.9). This patch therefore\napplies as-is only to kernels that carry those helpers (v6.9+); older\nstable kernels need the same gpiod_set_value_cansleep() conversion at the\ncorresponding open-coded call sites."}], "id": "CVE-2026-80999", "lastModified": "2026-10-19T09:17:32.893", "metrics": {}, "published": "2026-09-11T20:19:07.433", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1610a8c2b93e815e3dc8643a2a69ab1c37975a6a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c32cf5292a0dd70c4afc138b4dc45743a190cd5a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f71087e7c63aa3e99bf65d7ddf91eb4fd3545778"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Realtek DSA driver uses incorrect GPIO function, causing warnings", "id": "2532457", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532457"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-663", "details": ["A flaw was found in the Linux kernel's Realtek Digital Subscriber Line (DSA) driver. The driver incorrectly uses gpiod_set_value() instead of gpiod_set_value_cansleep() for reset GPIO operations. This can lead to system warnings when the reset GPIO is managed by a sleeping controller, potentially causing unexpected behavior or instability during the probe path."], "name": "CVE-2026-80999", "public_date": "2026-09-11T19:42:53Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80999\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80999\nhttps://git.kernel.org/stable/c/1610a8c2b93e815e3dc8643a2a69ab1c37975a6a\nhttps://git.kernel.org/stable/c/c32cf5292a0dd70c4afc138b4dc45743a190cd5a\nhttps://git.kernel.org/stable/c/f71087e7c63aa3e99bf65d7ddf91eb4fd3545778\nhttps://git.kernel.org/stable/c/fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d8652956cf37c5caa8c19e0b99ce5ca235c6d5de,c32cf5292a0dd70c4afc138b4dc45743a190cd5a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d8652956cf37c5caa8c19e0b99ce5ca235c6d5de,f71087e7c63aa3e99bf65d7ddf91eb4fd3545778)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d8652956cf37c5caa8c19e0b99ce5ca235c6d5de,1610a8c2b93e815e3dc8643a2a69ab1c37975a6a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d8652956cf37c5caa8c19e0b99ce5ca235c6d5de,fb58b6a696b30bcbfbe0cfc0a91b19c816a955fc)"}}], "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": "4.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.109,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.50,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.4,7.3.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "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": "2026-09-12T21:00:12.575110+00:00", "updated": "2026-09-21T03:45:08.568291+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}