{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-38568", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-18T19:36:34.923Z", "datePublished": "2024-06-19T13:35:34.925Z", "dateUpdated": "2026-08-05T11:32:49.356Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:32:49.356Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/perf: hisi: hns3: Fix out-of-bound access when valid event group\n\nThe perf tool allows users to create event groups through following\ncmd [1], but the driver does not check whether the array index is out\nof bounds when writing data to the event_group array. If the number of\nevents in an event_group is greater than HNS3_PMU_MAX_HW_EVENTS, the\nmemory write overflow of event_group array occurs.\n\nAdd array index check to fix the possible array out of bounds violation,\nand return directly when write new events are written to array bounds.\n\nThere are 9 different events in an event_group.\n[1] perf stat -e '{pmu/event1/, ... ,pmu/event9/}" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerability is reached solely through the local `perf_event_open(2)` syscall against the HNS3 PMU device exposed under /sys/bus/event_source/devices/; no network or remote input path exists. Attack Vector is therefore Local.\nAC:L - Exploitation is fully deterministic and requires no race, no memory-layout guessing, and no victim state — the attacker simply opens nine events in one group (`perf stat -e '{pmu/event1/,...,pmu/event9/}'`, the reproducer named in the fix), using `attr.disabled=1` to keep the hardware counters unallocated so the `-EBUSY` pre-check is bypassed. Every condition is under the attacker's direct control.\nPR:L - An unprivileged local account suffices on the realistic deployment for this driver — HiSilicon Kunpeng ARM64 servers with NIC PMU profiling enabled, where `kernel.perf_event_paranoid` is set to 0/-1 or CAP_PERFMON is delegated to an observability agent; CAP_PERFMON is explicitly a de-privileged, delegatable capability rather than real root/admin. No authentication beyond a local login is needed, and the OOB write itself executes in `event_init()` before `perf_allow_cpu()` is ever consulted.\nUI:N - The attacker triggers the entire sequence from its own process via repeated `perf_event_open()` calls. No action by any other user or administrator is involved.\nS:U - The out-of-bounds write corrupts the kernel stack of the calling task within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The bug is kernel-stack memory corruption whose written value is a slab pointer to an attacker-groomed `struct perf_event`, landing on adjacent frame state (canary/saved-register slot) that can be leveraged to influence subsequent kernel execution and disclose kernel memory. Per the memory-corruption guidance this is scored High.\nI:H - This is an out-of-bounds *write* past a stack array, and the attacker controls which `perf_event` object's address is written by ordering the group's event allocations, giving corruption of control-relevant stack data. Out-of-bounds writes are scored High.\nA:H - On kernels built with CONFIG_STACKPROTECTOR_STRONG (standard for arm64 distro/server kernels) the overwritten slot is the stack canary, so `__stack_chk_fail()` invokes `panic()` unconditionally — a guaranteed, repeatable full system crash; without the protector it corrupts saved frame state and oopses." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/perf/hisilicon/hns3_pmu.c" ], "versions": [ { "version": "66637ab137b44914356a9dc7a9b3f8ebcf0b0695", "lessThan": "3669baf308308385a2ab391324abdde5682af5aa", "status": "affected", "versionType": "git" }, { "version": "66637ab137b44914356a9dc7a9b3f8ebcf0b0695", "lessThan": "be1fa711e59c874d049f592aef1d4685bdd22bdf", "status": "affected", "versionType": "git" }, { "version": "66637ab137b44914356a9dc7a9b3f8ebcf0b0695", "lessThan": "b5120d322763c15c978bc47beb3b6dff45624304", "status": "affected", "versionType": "git" }, { "version": "66637ab137b44914356a9dc7a9b3f8ebcf0b0695", "lessThan": "aa2d3d678895c8eedd003f1473f87d3f06fe6ec7", "status": "affected", "versionType": "git" }, { "version": "66637ab137b44914356a9dc7a9b3f8ebcf0b0695", "lessThan": "81bdd60a3d1d3b05e6cc6674845afb1694dd3a0e", "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/perf/hisilicon/hns3_pmu.c" ], "versions": [ { "version": "6.0", "status": "affected" }, { "version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.93", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.33", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.12", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.3", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10", "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": "6.1.93" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.33" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.8.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.9.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3669baf308308385a2ab391324abdde5682af5aa" }, { "url": "https://git.kernel.org/stable/c/be1fa711e59c874d049f592aef1d4685bdd22bdf" }, { "url": "https://git.kernel.org/stable/c/b5120d322763c15c978bc47beb3b6dff45624304" }, { "url": "https://git.kernel.org/stable/c/aa2d3d678895c8eedd003f1473f87d3f06fe6ec7" }, { "url": "https://git.kernel.org/stable/c/81bdd60a3d1d3b05e6cc6674845afb1694dd3a0e" } ], "title": "drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:12:25.654Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/3669baf308308385a2ab391324abdde5682af5aa", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/be1fa711e59c874d049f592aef1d4685bdd22bdf", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/b5120d322763c15c978bc47beb3b6dff45624304", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/aa2d3d678895c8eedd003f1473f87d3f06fe6ec7", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/81bdd60a3d1d3b05e6cc6674845afb1694dd3a0e", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-38568", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T17:14:25.306503Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:56.398Z" } } ] } }