{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31443", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.090Z", "datePublished": "2026-04-22T13:53:40.616Z", "dateUpdated": "2026-05-11T22:08:48.361Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:08:48.361Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix crash when the event log is disabled\n\nIf reporting errors to the event log is not supported by the hardware,\nand an error that causes Function Level Reset (FLR) is received, the\ndriver will try to restore the event log even if it was not allocated.\n\nAlso, only try to free the event log if it was properly allocated."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/dma/idxd/device.c", "drivers/dma/idxd/init.c"], "versions": [{"version": "6078a315aec15e0776fa90347cf4eba7478cdbd7", "lessThan": "aa0ffc6d3990ec35976308a068dc23178037e564", "status": "affected", "versionType": "git"}, {"version": "6078a315aec15e0776fa90347cf4eba7478cdbd7", "lessThan": "0e761079d653c25f838380cf7cef2730832110cc", "status": "affected", "versionType": "git"}, {"version": "6078a315aec15e0776fa90347cf4eba7478cdbd7", "lessThan": "52d2edea0d63c935e82631e4b9e4a94eccf97b5b", "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/dma/idxd/device.c", "drivers/dma/idxd/init.c"], "versions": [{"version": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.21", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.11", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.14", "versionEndExcluding": "6.18.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "6.19.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/aa0ffc6d3990ec35976308a068dc23178037e564"}, {"url": "https://git.kernel.org/stable/c/0e761079d653c25f838380cf7cef2730832110cc"}, {"url": "https://git.kernel.org/stable/c/52d2edea0d63c935e82631e4b9e4a94eccf97b5b"}], "title": "dmaengine: idxd: Fix crash when the event log is disabled", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: dmaengine: idxd: Fix crash when the event log is disabled", "id": "2460686", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460686"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["A flaw was found in the Linux kernel's dmaengine: idxd driver. When hardware does not support event logging and an error triggers a Function Level Reset (FLR), the driver attempts to restore or free an event log that was never allocated. This improper handling can lead to a system crash, resulting in a Denial of Service (DoS) for affected systems."], "name": "CVE-2026-31443", "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": "2026-04-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31443\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31443\nhttps://lore.kernel.org/linux-cve-announce/2026042245-CVE-2026-31443-0b7d@gregkh/T"], "threat_severity": "Moderate"}

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