{ "document": { "aggregate_severity": { "text": "High" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/oraclelinux6els/vex/2022/cve-2022-48760-els_os-oraclelinux6els.json" } ], "title": "Security update on CVE-2022-48760", "tracking": { "current_release_date": "2025-12-23T22:15:38Z", "generator": { "date": "2025-12-23T22:15:38Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2022-48760-ELS_OS-ORACLELINUX6ELS", "initial_release_date": "2022-01-01T00:00:00Z", "revision_history": [ { "date": "2022-01-01T00:00:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-10-21T19:30:20Z", "number": "2", "summary": "Official Publication" }, { "date": "2025-12-23T22:15:38Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Oracle Linux 6", "product": { "name": "Oracle Linux 6", "product_id": "Oracle-Linux-6", "product_identification_helper": { "cpe": "cpe:2.3:o:oracle:linux:6:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Oracle Linux" } ], "category": "vendor", "name": "Oracle Corporation" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "python-perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "product": { "name": "python-perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "product_id": "python-perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/python-perf@2.6.32-754.35.8.el6.tuxcare.els26?arch=x86_64" } } }, { "category": "product_version", "name": 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"kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "product_id": "kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/kernel-headers@2.6.32-754.35.8.el6.tuxcare.els26?arch=x86_64" } } } ], "category": "architecture", "name": "x86_64" }, { "branches": [ { "category": "product_version", "name": "kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product": { "name": "kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product_id": "kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/kernel-abi-whitelists@2.6.32-754.35.8.el6.tuxcare.els26?arch=noarch" } } }, { "category": "product_version", "name": "kernel-doc-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product": { "name": "kernel-doc-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product_id": "kernel-doc-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/kernel-doc@2.6.32-754.35.8.el6.tuxcare.els26?arch=noarch" } } }, { "category": "product_version", "name": "kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product": { "name": "kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product_id": "kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/kernel-firmware@2.6.32-754.35.8.el6.tuxcare.els26?arch=noarch" } } } ], "category": "architecture", "name": "noarch" }, { "branches": [ { "category": "product_version", "name": "kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.i686", "product": { "name": "kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.i686", "product_id": "kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.i686", "product_identification_helper": { "purl": "pkg:rpm/cloudlinux/kernel-debug-devel@2.6.32-754.35.8.el6.tuxcare.els26?arch=i686" } } } ], "category": "architecture", "name": "i686" } ], "category": "vendor", "name": "CloudLinux" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "python-perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64 as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:python-perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" }, "product_reference": "python-perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64 as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" }, "product_reference": "perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch" }, "product_reference": "kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-debug-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64 as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-debug-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" }, "product_reference": "kernel-debug-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64 as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" }, "product_reference": "kernel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64 as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" }, "product_reference": "kernel-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.i686 as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.i686" }, "product_reference": "kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.i686", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64 as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" }, "product_reference": "kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-doc-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-doc-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch" }, "product_reference": "kernel-doc-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64 as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" }, "product_reference": "kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "relates_to_product_reference": "Oracle-Linux-6" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch as a component of Oracle Linux 6", "product_id": "Oracle-Linux-6:kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch" }, "product_reference": "kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "relates_to_product_reference": "Oracle-Linux-6" } ] }, "vulnerabilities": [ { "cve": "CVE-2022-48760", "cwe": { "id": "CWE-667", "name": "Improper Locking" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: core: Fix hang in usb_kill_urb by adding memory barriers\n\nThe syzbot fuzzer has identified a bug in which processes hang waiting\nfor usb_kill_urb() to return. It turns out the issue is not unlinking\nthe URB; that works just fine. Rather, the problem arises when the\nwakeup notification that the URB has completed is not received.\n\nThe reason is memory-access ordering on SMP systems. In outline form,\nusb_kill_urb() and __usb_hcd_giveback_urb() operating concurrently on\ndifferent CPUs perform the following actions:\n\nCPU 0\t\t\t\t\tCPU 1\n----------------------------\t\t---------------------------------\nusb_kill_urb():\t\t\t\t__usb_hcd_giveback_urb():\n ...\t\t\t\t\t ...\n atomic_inc(&urb->reject);\t\t atomic_dec(&urb->use_count);\n ...\t\t\t\t\t ...\n wait_event(usb_kill_urb_queue,\n\tatomic_read(&urb->use_count) == 0);\n\t\t\t\t\t if (atomic_read(&urb->reject))\n\t\t\t\t\t\twake_up(&usb_kill_urb_queue);\n\nConfining your attention to urb->reject and urb->use_count, you can\nsee that the overall pattern of accesses on CPU 0 is:\n\n\twrite urb->reject, then read urb->use_count;\n\nwhereas the overall pattern of accesses on CPU 1 is:\n\n\twrite urb->use_count, then read urb->reject.\n\nThis pattern is referred to in memory-model circles as SB (for \"Store\nBuffering\"), and it is well known that without suitable enforcement of\nthe desired order of accesses -- in the form of memory barriers -- it\nis entirely possible for one or both CPUs to execute their reads ahead\nof their writes. The end result will be that sometimes CPU 0 sees the\nold un-decremented value of urb->use_count while CPU 1 sees the old\nun-incremented value of urb->reject. Consequently CPU 0 ends up on\nthe wait queue and never gets woken up, leading to the observed hang\nin usb_kill_urb().\n\nThe same pattern of accesses occurs in usb_poison_urb() and the\nfailure pathway of usb_hcd_submit_urb().\n\nThe problem is fixed by adding suitable memory barriers. To provide\nproper memory-access ordering in the SB pattern, a full barrier is\nrequired on both CPUs. The atomic_inc() and atomic_dec() accesses\nthemselves don't provide any memory ordering, but since they are\npresent, we can use the optimized smp_mb__after_atomic() memory\nbarrier in the various routines to obtain the desired effect.\n\nThis patch adds the necessary memory barriers.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "Oracle-Linux-6:kernel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "Oracle-Linux-6:kernel-debug-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.i686", "Oracle-Linux-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:kernel-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:kernel-doc-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "Oracle-Linux-6:kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "Oracle-Linux-6:kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:python-perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2022-48760" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/26fbe9772b8c459687930511444ce443011f86bf", "url": "https://git.kernel.org/stable/c/26fbe9772b8c459687930511444ce443011f86bf" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/546ba238535d925254e0b3f12012a5c55801e2f3", "url": "https://git.kernel.org/stable/c/546ba238535d925254e0b3f12012a5c55801e2f3" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/5904dfd3ddaff3bf4a41c3baf0a8e8f31ed4599b", "url": "https://git.kernel.org/stable/c/5904dfd3ddaff3bf4a41c3baf0a8e8f31ed4599b" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/5f138ef224dffd15d5e5c5b095859719e0038427", "url": "https://git.kernel.org/stable/c/5f138ef224dffd15d5e5c5b095859719e0038427" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/9340226388c66a7e090ebb00e91ed64a753b6c26", "url": "https://git.kernel.org/stable/c/9340226388c66a7e090ebb00e91ed64a753b6c26" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/9c61fce322ac2ef7fecf025285353570d60e41d6", "url": "https://git.kernel.org/stable/c/9c61fce322ac2ef7fecf025285353570d60e41d6" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/b50f5ca60475710bbc9a3af32fbfc17b1e69c2f0", "url": "https://git.kernel.org/stable/c/b50f5ca60475710bbc9a3af32fbfc17b1e69c2f0" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/c9a18f7c5b071dce5e6939568829d40994866ab0", "url": "https://git.kernel.org/stable/c/c9a18f7c5b071dce5e6939568829d40994866ab0" }, { "category": "external", "summary": "https://git.kernel.org/stable/c/e3b131e30e612ff0e32de6c1cb4f69f89db29193", "url": "https://git.kernel.org/stable/c/e3b131e30e612ff0e32de6c1cb4f69f89db29193" } ], "release_date": "2024-06-20T12:15:00Z", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1" }, "products": [ "Oracle-Linux-6:kernel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:kernel-abi-whitelists-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "Oracle-Linux-6:kernel-debug-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.i686", "Oracle-Linux-6:kernel-debug-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:kernel-devel-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:kernel-doc-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "Oracle-Linux-6:kernel-firmware-0:2.6.32-754.35.8.el6.tuxcare.els26.noarch", "Oracle-Linux-6:kernel-headers-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64", "Oracle-Linux-6:python-perf-0:2.6.32-754.35.8.el6.tuxcare.els26.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }