{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-35847", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.105Z", "datePublished": "2024-05-17T14:47:26.175Z", "dateUpdated": "2026-08-05T11:30:16.581Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:30:16.581Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v3-its: Prevent double free on error\n\nThe error handling path in its_vpe_irq_domain_alloc() causes a double free\nwhen its_vpe_init() fails after successfully allocating at least one\ninterrupt. This happens because its_vpe_irq_domain_free() frees the\ninterrupts along with the area bitmap and the vprop_page and\nits_vpe_irq_domain_alloc() subsequently frees the area bitmap and the\nvprop_page again.\n\nFix this by unconditionally invoking its_vpe_irq_domain_free() which\nhandles all cases correctly and by removing the bitmap/vprop_page freeing\nfrom its_vpe_irq_domain_alloc().\n\n[ tglx: Massaged change log ]" } ], "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 only path into `its_vpe_irq_domain_alloc()` is the local `/dev/kvm` ioctl chain (`KVM_CREATE_VM`/`KVM_CREATE_VCPU`/`KVM_CREATE_DEVICE`/`KVM_DEV_ARM_ VGIC_CTRL_INIT` → `vgic_v4_init()` → `its_alloc_vcpu_irqs()`). No network, adjacent, or remote-peer input reaches this code.\nAC:L - The attacker deterministically creates the failure condition by exhausting the global 65536-entry `its_vpeid_ida` with its own VMs/vCPUs, then launching a multi-vCPU VM so vCPU 0 succeeds and vCPU 1 gets `-ENOSPC` — and it also chooses `nr_vcpus`, which selects the bitmap's kmalloc size class for grooming. Nothing depends on a race or on state outside the attacker's control; GICv4 hardware is the vulnerable configuration, not an attacker-uncontrolled precondition.\nPR:L - Only an unprivileged local account with an fd on `/dev/kvm` is needed — the `kvm` group on ordinary distros, world-accessible on many Android/ChromeOS/cloud images, and routinely passed into containers and untrusted-tenant VMM processes. There is no capability check on `vgic_init()`/`vgic_v4_init()`/`its_alloc_vcpu_irqs()`.\nUI:N - The attacker performs every step itself — draining the VPE ID space with its own VMs, then creating the VM whose vGIC init trips the error path. No victim action or other user's involvement is required.\nS:U - The defect and its consequences are confined to host kernel memory within a single security authority; no VM-escape, IOMMU, or sandbox boundary is crossed by the corruption itself.\nC:H - The `kmalloc()` inside the second `free_lpi_range()` reallocates the just-freed bitmap as a live `struct lpi_range`, which is then freed again, leaving a list-linked object on the slab freelist — a use-after-free the attacker can realloc and read back, giving uncontrolled disclosure of kernel memory. The duplicated `free_lpi_range()` additionally hands identical LPI IDs to two different devices/VMs, aliasing interrupt configuration and pending state across owners.\nI:H - The same dangling `lpi_range` can be re-allocated with attacker-controlled bytes, so `merge_lpi_ranges()`/`list_del()` operate on a forged `list_head` — a write-what-where primitive suitable for control-flow hijacking and privilege escalation. The order-4 `vprop_page` is also released twice, corrupting buddy-allocator state.\nA:H - Even unexploited, the double `kfree()`/`free_pages()` trips SLUB double-free detection, page refcount underflow, or later freelist corruption, producing an oops or panic. Any local user with `/dev/kvm` can trigger it at will and repeatedly." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/irqchip/irq-gic-v3-its.c" ], "versions": [ { "version": "7d75bbb4bc1ad90386776459d37e4ddfe605671e", "lessThan": "f5417ff561b8ac9a7e53c747b8627a7ab58378ae", "status": "affected", "versionType": "git" }, { "version": "7d75bbb4bc1ad90386776459d37e4ddfe605671e", "lessThan": "b72d2b1448b682844f995e660b77f2a1fabc1662", "status": "affected", "versionType": "git" }, { "version": "7d75bbb4bc1ad90386776459d37e4ddfe605671e", "lessThan": "aa44d21574751a7d6bca892eb8e0e9ac68372e52", "status": "affected", "versionType": "git" }, { "version": "7d75bbb4bc1ad90386776459d37e4ddfe605671e", "lessThan": "5dbdbe1133911ca7d8466bb86885adec32ad9438", "status": "affected", "versionType": "git" }, { "version": "7d75bbb4bc1ad90386776459d37e4ddfe605671e", "lessThan": "dd681710ab77c8beafe2e263064cb1bd0e2d6ca9", "status": "affected", "versionType": "git" }, { "version": "7d75bbb4bc1ad90386776459d37e4ddfe605671e", "lessThan": "03170e657f62c26834172742492a8cb8077ef792", "status": "affected", "versionType": "git" }, { "version": "7d75bbb4bc1ad90386776459d37e4ddfe605671e", "lessThan": "5b012f77abde89bf0be8a0547636184fea618137", "status": "affected", "versionType": "git" }, { "version": "7d75bbb4bc1ad90386776459d37e4ddfe605671e", "lessThan": "c26591afd33adce296c022e3480dea4282b7ef91", "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/irqchip/irq-gic-v3-its.c" ], "versions": [ { "version": "4.14", "status": "affected" }, { "version": "0", "lessThan": "4.14", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.313", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.275", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.216", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.158", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.90", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.30", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.9", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "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": "4.14", "versionEndExcluding": "4.19.313" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.4.275" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.10.216" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.15.158" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.1.90" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.6.30" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.8.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/f5417ff561b8ac9a7e53c747b8627a7ab58378ae" }, { "url": "https://git.kernel.org/stable/c/b72d2b1448b682844f995e660b77f2a1fabc1662" }, { "url": "https://git.kernel.org/stable/c/aa44d21574751a7d6bca892eb8e0e9ac68372e52" }, { "url": "https://git.kernel.org/stable/c/5dbdbe1133911ca7d8466bb86885adec32ad9438" }, { "url": "https://git.kernel.org/stable/c/dd681710ab77c8beafe2e263064cb1bd0e2d6ca9" }, { "url": "https://git.kernel.org/stable/c/03170e657f62c26834172742492a8cb8077ef792" }, { "url": "https://git.kernel.org/stable/c/5b012f77abde89bf0be8a0547636184fea618137" }, { "url": "https://git.kernel.org/stable/c/c26591afd33adce296c022e3480dea4282b7ef91" } ], "title": "irqchip/gic-v3-its: Prevent double free on error", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-12T15:13:12.628141Z", "id": "CVE-2024-35847", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-12T15:13:20.451Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:48.906Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/f5417ff561b8ac9a7e53c747b8627a7ab58378ae", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/b72d2b1448b682844f995e660b77f2a1fabc1662", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/aa44d21574751a7d6bca892eb8e0e9ac68372e52", "tags": [ "x_transferred" ] }, { "url": 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