342 lines
17 KiB
JSON
342 lines
17 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-21934",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-12-29T08:45:45.789Z",
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"datePublished": "2025-04-01T15:41:02.804Z",
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"dateUpdated": "2026-08-05T11:55:27.199Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:55:27.199Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrapidio: fix an API misues when rio_add_net() fails\n\nrio_add_net() calls device_register() and fails when device_register()\nfails. Thus, put_device() should be used rather than kfree(). Add\n\"mport->net = NULL;\" to avoid a use after free issue."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerability is reached only through the RIO_DEV_ADD ioctl on the local character device /dev/rio_mportN, which requires local access to the system. RapidIO is a board-level fabric interconnect, not an IP network path, so no remote or adjacent reachability exists.\nAC:L - The attacker controls both sides of the unlocked mport->net race: two concurrent RIO_DEV_ADD ioctls both allocate a net and both register a device named \"rnet_<id>\" under the same parent, so the loser's device_register() fails deterministically with -EEXIST, and the sequence is freely retryable. Reclaiming the freed struct rio_net (which embeds a full struct device, landing in a common kmalloc cache) via standard heap spray is routine.\nPR:L - The driver performs no capable() or permission check on any ioctl path — access is gated purely by /dev/rio_mportN node permissions, and RapidIO deployments commonly delegate fabric enumeration to non-root userspace management daemons via group-accessible device nodes. An unprivileged user with access to the mport device node can fully drive the bug.\nUI:N - Exploitation is entirely self-driven through ioctl calls by the attacker's own process; no victim action, mount, or file open by another user is needed.\nS:U - The freed object, the corruption, and the resulting privilege gain all live within the kernel's own security authority, with no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The dangling mport->net is used as a struct device parent and list head, so after slab reclamation the attacker can leak kernel pointers written back into the sprayed object and dereference attacker-influenced sysfs/kobject pointers, yielding arbitrary kernel memory disclosure.\nI:H - list_add_tail(&rdev->net_list, &rdev->net->devices) inserts into a freed, attacker-reclaimed list head, giving a controllable write-what-where primitive, and device_add() increments a refcount inside the freed object — both leverageable into arbitrary kernel memory write and control-flow hijack.\nA:H - Even without full exploitation, the use-after-free on mport->net and the subsequent double free via rio_free_net()/device_unregister() on freed memory reliably produce slab corruption, oops, or kernel panic."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/rapidio/devices/rio_mport_cdev.c"
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],
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"versions": [
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{
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"version": "e8de370188d098bb49483c287b44925957c3c9b6",
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"lessThan": "d4ec862ce80f64db923a1d942b5d11cf6fc87d36",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e8de370188d098bb49483c287b44925957c3c9b6",
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"lessThan": "88ddad53e4cfb6de861c6d4fb7b25427f46baed5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e8de370188d098bb49483c287b44925957c3c9b6",
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"lessThan": "cdd9f58f7fe41a55fae4305ea51fc234769fd466",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e8de370188d098bb49483c287b44925957c3c9b6",
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"lessThan": "a5f5e520e8fbc6294020ff8afa36f684d92c6e6a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e8de370188d098bb49483c287b44925957c3c9b6",
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"lessThan": "2537f01d57f08c527e40bbb5862aa6ff43344898",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e8de370188d098bb49483c287b44925957c3c9b6",
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"lessThan": "22e4977141dfc6d109bf29b495bf2187b4250990",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e8de370188d098bb49483c287b44925957c3c9b6",
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"lessThan": "f0aa4ee1cbbf7789907e5a3f6810de01c146c211",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "e8de370188d098bb49483c287b44925957c3c9b6",
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"lessThan": "b2ef51c74b0171fde7eb69b6152d3d2f743ef269",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/rapidio/devices/rio_mport_cdev.c"
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],
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"versions": [
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{
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"version": "4.6",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.6",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.291",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.235",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.179",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.131",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.83",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.19",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.13.7",
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"lessThanOrEqual": "6.13.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.14",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.6",
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"versionEndExcluding": "5.4.291"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"url": "https://git.kernel.org/stable/c/d4ec862ce80f64db923a1d942b5d11cf6fc87d36"
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},
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{
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"url": "https://git.kernel.org/stable/c/88ddad53e4cfb6de861c6d4fb7b25427f46baed5"
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},
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{
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"url": "https://git.kernel.org/stable/c/cdd9f58f7fe41a55fae4305ea51fc234769fd466"
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},
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{
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"url": "https://git.kernel.org/stable/c/a5f5e520e8fbc6294020ff8afa36f684d92c6e6a"
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},
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{
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"url": "https://git.kernel.org/stable/c/2537f01d57f08c527e40bbb5862aa6ff43344898"
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},
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{
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"url": "https://git.kernel.org/stable/c/22e4977141dfc6d109bf29b495bf2187b4250990"
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},
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{
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"url": "https://git.kernel.org/stable/c/f0aa4ee1cbbf7789907e5a3f6810de01c146c211"
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},
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{
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"url": "https://git.kernel.org/stable/c/b2ef51c74b0171fde7eb69b6152d3d2f743ef269"
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}
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],
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"title": "rapidio: fix an API misues when rio_add_net() fails",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "HIGH"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2025-21934",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2025-10-01T19:22:15.227028Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2025-10-01T19:26:33.096Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
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},
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T19:39:30.684Z"
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}
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}
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]
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}
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} |