194 lines
9.5 KiB
JSON
194 lines
9.5 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2024-27392",
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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": "2024-02-25T13:47:42.677Z",
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"datePublished": "2024-05-01T13:05:20.117Z",
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"dateUpdated": "2026-08-05T11:29:25.994Z"
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:29:25.994Z"
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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\nnvme: host: fix double-free of struct nvme_id_ns in ns_update_nuse()\n\nWhen nvme_identify_ns() fails, it frees the pointer to the struct\nnvme_id_ns before it returns. However, ns_update_nuse() calls kfree()\nfor the pointer even when nvme_identify_ns() fails. This results in\nKASAN double-free, which was observed with blktests nvme/045 with\nproposed patches [1] on the kernel v6.8-rc7. Fix the double-free by\nskipping kfree() when nvme_identify_ns() fails."
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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 vulnerable path is entered only by a local `read()` on the world-readable sysfs attribute `/sys/block/nvmeXnY/nuse`; a remote NVMe-oF target can supply the failing Identify status but cannot itself initiate the code path.\nAC:L - There is no race to win — the second `kfree()` executes unconditionally in the same call once `nvme_identify_ns()` returns an error, and in an NVMe-over-TCP/fabrics deployment the attacker controls the target's Identify response (or forces a reconnect) so the controller is non-LIVE and every read hits the error leg reliably.\nPR:L - `nuse` is a `DEVICE_ATTR_RO` (0444) attribute with no capability check on the read path, so any unprivileged local user or container process with `/sys` mounted can trigger it.\nUI:N - The attacker performs the sysfs read itself; no action by any other user or administrator is required.\nS:U - The corruption is confined to the kernel heap of the same system and does not cross a virtualization, IOMMU, or other security-authority boundary.\nC:H - A double free of a 4096-byte kmalloc-4k object lets two subsequent allocations alias the same memory, producing type confusion/use-after-free that can be leveraged to read arbitrary kernel memory.\nI:H - Freelist corruption from the double free gives the attacker overlapping ownership of a heap object, a well-known route to arbitrary kernel write and control-flow hijack/privilege escalation.\nA:H - The double free trips KASAN/`CONFIG_SLAB_FREELIST_HARDENED` BUG checks and otherwise corrupts the SLUB freelist, causing kernel oops or panic; it can be re-triggered by repeated reads."
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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/nvme/host/sysfs.c"
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],
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"versions": [
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{
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"version": "a1a825ab6a60380240ca136596732fdb80bad87a",
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"lessThan": "534f9dc7fe495b3f9cc84363898ac50c5a25fccb",
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"status": "affected",
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"status": "affected",
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}
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"programFiles": [
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"drivers/nvme/host/sysfs.c"
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],
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{
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"version": "6.8",
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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": "6.8",
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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": "6.8.2",
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"lessThanOrEqual": "6.8.*",
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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": "6.9",
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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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"versionStartIncluding": "6.8",
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"versionEndExcluding": "6.8.2"
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"references": [
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}
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],
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"title": "nvme: host: fix double-free of struct nvme_id_ns in ns_update_nuse()",
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"x_generator": {
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"id": "CVE-2024-27392",
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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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