{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-56554", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T14:03:05.990Z", "datePublished": "2024-12-27T14:22:55.764Z", "dateUpdated": "2026-08-05T11:45:01.708Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:45:01.708Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix freeze UAF in binder_release_work()\n\nWhen a binder reference is cleaned up, any freeze work queued in the\nassociated process should also be removed. Otherwise, the reference is\nfreed while its ref->freeze.work is still queued in proc->work leading\nto a use-after-free issue as shown by the following KASAN report:\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in binder_release_work+0x398/0x3d0\n Read of size 8 at addr ffff31600ee91488 by task kworker/5:1/211\n\n CPU: 5 UID: 0 PID: 211 Comm: kworker/5:1 Not tainted 6.11.0-rc7-00382-gfc6c92196396 #22\n Hardware name: linux,dummy-virt (DT)\n Workqueue: events binder_deferred_func\n Call trace:\n binder_release_work+0x398/0x3d0\n binder_deferred_func+0xb60/0x109c\n process_one_work+0x51c/0xbd4\n worker_thread+0x608/0xee8\n\n Allocated by task 703:\n __kmalloc_cache_noprof+0x130/0x280\n binder_thread_write+0xdb4/0x42a0\n binder_ioctl+0x18f0/0x25ac\n __arm64_sys_ioctl+0x124/0x190\n invoke_syscall+0x6c/0x254\n\n Freed by task 211:\n kfree+0xc4/0x230\n binder_deferred_func+0xae8/0x109c\n process_one_work+0x51c/0xbd4\n worker_thread+0x608/0xee8\n ==================================================================\n\nThis commit fixes the issue by ensuring any queued freeze work is removed\nwhen cleaning up a binder reference." } ], "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 only through ioctl(BINDER_WRITE_READ) on the local /dev/binder device file; there is no network-facing path, so the attacker needs local system access.\nAC:L - This is a missing-dequeue logic error where the attacker fully controls both the freeze-notification registration and the ref teardown, allowing the freed-while-queued condition to be set up reliably without winning any uncontrollable race.\nPR:L - Triggering requires only opening the binder device and issuing standard binder commands, which any unprivileged local app can do on Android; no elevated capability gates the freeze-notification path.\nUI:N - The attacking process performs the registration, ref drop, and work processing itself; no action from any other user is required.\nS:U - The use-after-free is confined to kernel memory within the same security authority; exploitation yields standard local kernel compromise without crossing a VM/IOMMU boundary.\nC:H - The freed binder_ref_freeze object can be reallocated with attacker-controlled data before the stale pointer is read in binder_release_work(), enabling disclosure of kernel memory.\nI:H - The freed object remains linked on proc->todo and is manipulated as list-work after reallocation, so heap spraying of the reclaimed slot provides a write/control-flow primitive typical of exploitable UAFs.\nA:H - The use-after-free reliably corrupts kernel state and causes an oops/panic, producing a kernel crash and denial of service." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/android/binder.c" ], "versions": [ { "version": "d579b04a52a183db47dfcb7a44304d7747d551e1", "lessThan": "fe39e0ea2d0ba7f508ff453c4c9a44a95ec0de29", "status": "affected", "versionType": "git" }, { "version": "d579b04a52a183db47dfcb7a44304d7747d551e1", "lessThan": "7e20434cbca814cb91a0a261ca0106815ef48e5f", "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/android/binder.c" ], "versions": [ { "version": "6.12", "status": "affected" }, { "version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.4", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13", "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": "6.12", "versionEndExcluding": "6.12.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/fe39e0ea2d0ba7f508ff453c4c9a44a95ec0de29" }, { "url": "https://git.kernel.org/stable/c/7e20434cbca814cb91a0a261ca0106815ef48e5f" } ], "title": "binder: fix freeze UAF in binder_release_work()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-56554", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-02-10T17:12:48.386933Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-10T17:21:08.609Z" } } ] } }