{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2024-36888", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-30T15:25:07.065Z", "datePublished": "2024-05-30T15:28:56.214Z", "dateUpdated": "2024-08-02T03:43:49.849Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-30T15:28:56.214Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nworkqueue: Fix selection of wake_cpu in kick_pool()\n\nWith cpu_possible_mask=0-63 and cpu_online_mask=0-7 the following\nkernel oops was observed:\n\nsmp: Bringing up secondary CPUs ...\nsmp: Brought up 1 node, 8 CPUs\nUnable to handle kernel pointer dereference in virtual kernel address space\nFailing address: 0000000000000000 TEID: 0000000000000803\n[..]\n Call Trace:\narch_vcpu_is_preempted+0x12/0x80\nselect_idle_sibling+0x42/0x560\nselect_task_rq_fair+0x29a/0x3b0\ntry_to_wake_up+0x38e/0x6e0\nkick_pool+0xa4/0x198\n__queue_work.part.0+0x2bc/0x3a8\ncall_timer_fn+0x36/0x160\n__run_timers+0x1e2/0x328\n__run_timer_base+0x5a/0x88\nrun_timer_softirq+0x40/0x78\n__do_softirq+0x118/0x388\nirq_exit_rcu+0xc0/0xd8\ndo_ext_irq+0xae/0x168\next_int_handler+0xbe/0xf0\npsw_idle_exit+0x0/0xc\ndefault_idle_call+0x3c/0x110\ndo_idle+0xd4/0x158\ncpu_startup_entry+0x40/0x48\nrest_init+0xc6/0xc8\nstart_kernel+0x3c4/0x5e0\nstartup_continue+0x3c/0x50\n\nThe crash is caused by calling arch_vcpu_is_preempted() for an offline\nCPU. To avoid this, select the cpu with cpumask_any_and_distribute()\nto mask __pod_cpumask with cpu_online_mask. In case no cpu is left in\nthe pool, skip the assignment.\n\ntj: This doesn't fully fix the bug as CPUs can still go down between picking\nthe target CPU and the wake call. Fixing that likely requires adding\ncpu_online() test to either the sched or s390 arch code. However, regardless\nof how that is fixed, workqueue shouldn't be picking a CPU which isn't\nonline as that would result in unpredictable and worse behavior." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/workqueue.c" ], "versions": [ { "version": "8639ecebc9b1", "lessThan": "c57824d4fe07", "status": "affected", "versionType": "git" }, { "version": "8639ecebc9b1", "lessThan": "6d559e70b3eb", "status": "affected", "versionType": "git" }, { "version": "8639ecebc9b1", "lessThan": "57a01eafdcf7", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "kernel/workqueue.c" ], "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.31", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.10", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c57824d4fe07c2131f8c48687cbd5ee2be60c767" }, { "url": "https://git.kernel.org/stable/c/6d559e70b3eb6623935cbe7f94c1912c1099777b" }, { "url": "https://git.kernel.org/stable/c/57a01eafdcf78f6da34fad9ff075ed5dfdd9f420" } ], "title": "workqueue: Fix selection of wake_cpu in kick_pool()", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-476", "lang": "en", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "affected": [ { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "8639ecebc9b1", "status": "affected", "lessThan": "c57824d4fe07", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "8639ecebc9b1", "status": "affected", "lessThan": "6d559e70b3eb", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "8639ecebc9b1", "status": "affected", "lessThan": "57a01eafdcf7", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "0", "status": "unaffected", "lessThan": "6.6", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "6.6.31", "status": "unaffected", "lessThan": "67", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "6.8.10", "status": "unaffected", "lessThan": "6.9", "versionType": "custom" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "6.9", "status": "unaffected" } ] }, { "vendor": "linux", "product": "linux_kernel", "cpes": [ "cpe:2.3:o:linux:linux_kernel:6.6:-:*:*:*:*:*:*" ], "defaultStatus": "unknown", "versions": [ { "version": "6.6", "status": "affected" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-03T16:08:09.861765Z", "id": "CVE-2024-36888", "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": "2024-06-06T19:30:56.460Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:43:49.849Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/c57824d4fe07c2131f8c48687cbd5ee2be60c767", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/6d559e70b3eb6623935cbe7f94c1912c1099777b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/57a01eafdcf78f6da34fad9ff075ed5dfdd9f420", "tags": [ "x_transferred" ] } ] } ] } }