CVE-2026-31550

{"id": "CVE-2026-31550", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "670c672608a1ffcbc7ac0f872734843593bb8b15", "lessThan": "0e84e74849d2d7e9b23a09c2d5e0d9357db1ca59", "versionType": "git"}, {"status": "affected", "version": "670c672608a1ffcbc7ac0f872734843593bb8b15", "lessThan": "c5e734f6a0740dce92e7c919e632cb43fa5d4e53", "versionType": "git"}, {"status": "affected", "version": "670c672608a1ffcbc7ac0f872734843593bb8b15", "lessThan": "622ab02e955c35c125ff2b65d8327b2c52db8758", "versionType": "git"}, {"status": "affected", "version": "670c672608a1ffcbc7ac0f872734843593bb8b15", "lessThan": "9443202d91388026dbf7312972a74fbfd27ee82f", "versionType": "git"}, {"status": "affected", "version": "670c672608a1ffcbc7ac0f872734843593bb8b15", "lessThan": "ea4fa54b83bb2e4a21e9026824bfe271b1a6ee1e", "versionType": "git"}, {"status": "affected", "version": "670c672608a1ffcbc7ac0f872734843593bb8b15", "lessThan": "18605b1b936b66b1f34dcf8e9ad4f1fbcf7a7c13", "versionType": "git"}, {"status": "affected", "version": "670c672608a1ffcbc7ac0f872734843593bb8b15", "lessThan": "572f17180f26619809b8e0593d926762aa8660ff", "versionType": "git"}, {"status": "affected", "version": "670c672608a1ffcbc7ac0f872734843593bb8b15", "lessThan": "b826d2c0b0ecb844c84431ba6b502e744f5d919a", "versionType": "git"}], "programFiles": ["drivers/pmdomain/bcm/bcm2835-power.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.1"}, {"status": "unaffected", "version": "0", "lessThan": "5.1", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.253", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.203", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.167", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.130", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.78", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.20", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.10", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/pmdomain/bcm/bcm2835-power.c"], "defaultStatus": "affected"}]}], "published": "2026-04-24T15:16:29.207", "references": [{"url": "https://git.kernel.org/stable/c/0e84e74849d2d7e9b23a09c2d5e0d9357db1ca59", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/18605b1b936b66b1f34dcf8e9ad4f1fbcf7a7c13", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/572f17180f26619809b8e0593d926762aa8660ff", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/622ab02e955c35c125ff2b65d8327b2c52db8758", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9443202d91388026dbf7312972a74fbfd27ee82f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b826d2c0b0ecb844c84431ba6b502e744f5d919a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c5e734f6a0740dce92e7c919e632cb43fa5d4e53", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ea4fa54b83bb2e4a21e9026824bfe271b1a6ee1e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npmdomain: bcm: bcm2835-power: Increase ASB control timeout\n\nThe bcm2835_asb_control() function uses a tight polling loop to wait\nfor the ASB bridge to acknowledge a request. During intensive workloads,\nthis handshake intermittently fails for V3D's master ASB on BCM2711,\nresulting in \"Failed to disable ASB master for v3d\" errors during\nruntime PM suspend. As a consequence, the failed power-off leaves V3D in\na broken state, leading to bus faults or system hangs on later accesses.\n\nAs the timeout is insufficient in some scenarios, increase the polling\ntimeout from 1us to 5us, which is still negligible in the context of a\npower domain transition. Also, replace the open-coded ktime_get_ns()/\ncpu_relax() polling loop with readl_poll_timeout_atomic()."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\npmdomain: bcm: bcm2835-power: Aumentar el tiempo de espera del control ASB\n\nLa funci\u00f3n bcm2835_asb_control() utiliza un bucle de sondeo ajustado para esperar a que el puente ASB reconozca una solicitud. Durante cargas de trabajo intensivas, este \u2019handshake\u2019 falla intermitentemente para el ASB maestro de V3D en BCM2711, lo que resulta en errores \u2019Failed to disable ASB master for v3d\u2019 durante la suspensi\u00f3n de PM en tiempo de ejecuci\u00f3n. Como consecuencia, el apagado fallido deja a V3D en un estado defectuoso, lo que lleva a fallos de bus o cuelgues del sistema en accesos posteriores.\n\nDado que el tiempo de espera es insuficiente en algunos escenarios, se aumenta el tiempo de espera del sondeo de 1us a 5us, lo cual sigue siendo insignificante en el contexto de una transici\u00f3n de dominio de energ\u00eda. Adem\u00e1s, se reemplaza el bucle de sondeo \u2019open-coded\u2019 ktime_get_ns()/cpu_relax() con readl_poll_timeout_atomic()."}], "lastModified": "2026-11-11T23:10:00.263", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7A7963C2-E27E-41F4-A575-6430E58CBEED", "versionEndExcluding": "5.10.253", "versionStartIncluding": "5.1.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045", "versionEndExcluding": "5.15.203", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2EDC6BAF-B710-4E26-B6AA-D68922EE7B43", "versionEndExcluding": "6.1.167", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C57BB918-DF28-46B3-94F7-144176841267", "versionEndExcluding": "6.6.130", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "28D591F5-B196-4CC9-905C-DC80F116E7A8", "versionEndExcluding": "6.12.78", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E5571059-6552-48E7-9BEF-3E358C387171", "versionEndExcluding": "6.18.20", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96D34333-38BE-4414-9E79-6EB764329581", "versionEndExcluding": "6.19.10", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.1:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D89FA266-EDB9-412A-B18E-1B5A0FCC3C0D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}