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Pero wmfw_adsp1_sizes solo se usa en el firmware ADSP1. Para ADSP2 y Halo Core, la estructura equivalente es wmfw_adsp2_sizes, que es 4 bytes m\u00e1s larga. Por lo tanto, la verificaci\u00f3n de longitud no garantiza que haya suficientes bytes en el b\u00fafer del firmware para un encabezado con wmfw_adsp2_sizes. Este parche divide el control de longitud en tres partes separadas. 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{"affected_release": [{"advisory": "RHSA-2024:7001", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.22.1.rt7.363.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-09-24T00:00:00Z"}, {"advisory": "RHSA-2024:7000", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.22.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-09-24T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9497", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.92.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-11-13T00:00:00Z"}, {"advisory": "RHSA-2024:9498", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.92.1.rt14.377.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-11-13T00:00:00Z"}], "bugzilla": {"description": "kernel: firmware: cs_dsp: Fix overflow checking of wmfw header", "id": "2300408", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2300408"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H", "status": "verified"}, "cwe": "CWE-122", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nfirmware: cs_dsp: Fix overflow checking of wmfw header\nFix the checking that firmware file buffer is large enough for the\nwmfw header, to prevent overrunning the buffer.\nThe original code tested that the firmware data buffer contained\nenough bytes for the sums of the size of the structs\nwmfw_header + wmfw_adsp1_sizes + wmfw_footer\nBut wmfw_adsp1_sizes is only used on ADSP1 firmware. For ADSP2 and\nHalo Core the equivalent struct is wmfw_adsp2_sizes, which is\n4 bytes longer. So the length check didn't guarantee that there\nare enough bytes in the firmware buffer for a header with\nwmfw_adsp2_sizes.\nThis patch splits the length check into three separate parts. Each\nof the wmfw_header, wmfw_adsp?_sizes and wmfw_footer are checked\nseparately before they are used.", "A vulnerability was found in the Linux kernel's firmware driver cs_dsp.c, where a buffer overflow is possible in the wmfw header due to insufficient buffer size checks. The issue stems from the size of one of the structs that the code checks, the wmfw_adsp?_sizes struct, which can vary depending on whether the firmware used is ADSP1 or ADSP2 and Halo Core. In the second case, the wmfw_adsp2_sizes struct is 4 bytes longer, which can cause a buffer overflow, potentially leading to undefined behavior in the system."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-41039", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-41039\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-41039\nhttps://lore.kernel.org/linux-cve-announce/2024072924-CVE-2024-41039-b3bc@gregkh/T"], "statement": "Red Hat believes this flaw to be of moderate severity because successful exploitation of this vulnerability would require elevated privileges to be able to access/modify the firmware loading mechanism. It also presents an elevated attack complexity given that the attacker requires knowledge of the Cirrus Logic DSP firmware to be able to craft special firmware to exploit the buffer overflow. Finally, depending on when the vulnerability is executed (ex. at boot time or during runtime) the impact on the system might change drastically; in one scenario it might cause a kernel crash in another just the audio driver might stop working.\nWithin regulated environments, a combination of the following controls acts as a significant barrier to successfully exploiting a CWE-122: Heap-based Buffer Overflow vulnerability and therefore downgrades the severity of this particular CVE from Moderate to Low.\nAccess to the platform is granted only after successful hard token, multi-factor authentication (MFA), which is coupled with least privilege principles to ensure that only authorized roles and users can execute or manipulate code. Red Hat enforces the principle of least functionality, ensuring that only essential features, services, and ports are enabled. This minimizes the number of components that could be affected by heap-based buffer overflow exploitations. The environment leverages malicious code protections such as IPS/IDS and antimalware solutions that detect and respond to indicators in real time, preventing or limiting the impact of exploitation attempts. Static code analysis and peer code review techniques ensure all user inputs are thoroughly validated, preventing improperly validated inputs from causing system instability, exposing sensitive data, or escalating risks. Finally, memory protection mechanisms such as Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) enhance resilience against memory buffer overflows and denial-of-service attacks.", "threat_severity": "Moderate"}

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