{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31389", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.084Z", "datePublished": "2026-04-03T15:15:55.068Z", "dateUpdated": "2026-04-03T15:15:55.068Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-03T15:15:55.068Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: fix use-after-free on controller registration failure\n\nMake sure to deregister from driver core also in the unlikely event that\nper-cpu statistics allocation fails during controller registration to\navoid use-after-free (of driver resources) and unclocked register\naccesses."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/spi/spi.c"], "versions": [{"version": "6598b91b5ac32bc756d7c3000a31f775d4ead1c4", "lessThan": "0e23f50086da7d0b183dfeac26021acfcdee086b", "status": "affected", "versionType": "git"}, {"version": "6598b91b5ac32bc756d7c3000a31f775d4ead1c4", "lessThan": "6bbd385b30c7fb6c7ee0669e9ada91490938c051", "status": "affected", "versionType": "git"}, {"version": "6598b91b5ac32bc756d7c3000a31f775d4ead1c4", "lessThan": "afe27c1f43aa57530011f419be6ddf71306565d2", "status": "affected", "versionType": "git"}, {"version": "6598b91b5ac32bc756d7c3000a31f775d4ead1c4", "lessThan": "80f3e8cd2b4ad355b2ad2024cf423f6d183404f7", "status": "affected", "versionType": "git"}, {"version": "6598b91b5ac32bc756d7c3000a31f775d4ead1c4", "lessThan": "23b51bad2eb8787aa74324cfccefb258515ae5ba", "status": "affected", "versionType": "git"}, {"version": "6598b91b5ac32bc756d7c3000a31f775d4ead1c4", "lessThan": "8634e05b08ead636e926022f4a98416e13440df9", "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/spi/spi.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.167", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.130", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.78", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.20", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.10", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0-rc5", "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": "6.0", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.78"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.19.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.0-rc5"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0e23f50086da7d0b183dfeac26021acfcdee086b"}, {"url": "https://git.kernel.org/stable/c/6bbd385b30c7fb6c7ee0669e9ada91490938c051"}, {"url": "https://git.kernel.org/stable/c/afe27c1f43aa57530011f419be6ddf71306565d2"}, {"url": "https://git.kernel.org/stable/c/80f3e8cd2b4ad355b2ad2024cf423f6d183404f7"}, {"url": "https://git.kernel.org/stable/c/23b51bad2eb8787aa74324cfccefb258515ae5ba"}, {"url": "https://git.kernel.org/stable/c/8634e05b08ead636e926022f4a98416e13440df9"}], "title": "spi: fix use-after-free on controller registration failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: fix use-after-free on controller registration failure\n\nMake sure to deregister from driver core also in the unlikely event that\nper-cpu statistics allocation fails during controller registration to\navoid use-after-free (of driver resources) and unclocked register\naccesses."}], "id": "CVE-2026-31389", "lastModified": "2026-04-03T16:16:36.823", "metrics": {}, "published": "2026-04-03T16:16:36.823", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0e23f50086da7d0b183dfeac26021acfcdee086b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/23b51bad2eb8787aa74324cfccefb258515ae5ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6bbd385b30c7fb6c7ee0669e9ada91490938c051"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/80f3e8cd2b4ad355b2ad2024cf423f6d183404f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8634e05b08ead636e926022f4a98416e13440df9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/afe27c1f43aa57530011f419be6ddf71306565d2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: spi: fix use-after-free on controller registration failure", "id": "2454859", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454859"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's Serial Peripheral Interface (SPI) subsystem. During controller registration, a use-after-free vulnerability can occur if the allocation of per-CPU statistics fails. This could allow a local attacker to cause system instability or a denial of service by accessing freed memory."], "name": "CVE-2026-31389", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31389\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31389\nhttps://lore.kernel.org/linux-cve-announce/2026040324-CVE-2026-31389-036b@gregkh/T"], "statement": "This vulnerability occurs only during an unlikely error path when per-CPU statistics allocation fails during SPI controller registration. Under normal system operation with adequate memory, this path is not exercised. The practical exploitability is very limited as it requires triggering a specific allocation failure during driver initialization.", "threat_severity": "Moderate"}