CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Improve EP11 CPRB length and overflow checks The xcrb_msg_to_type6_ep11cprb_msgx() function lacks proper input validation, creating security vulnerabilities: 1. Missing minimum size validation: The ep11_cprb structure and subsequent payload fields (pld_tag, pld_lenfmt) are copied from userspace without verifying sufficient buffer length. 2. Arithmetic overflow in length calculations: CEIL4 alignment could overflow, bypassing size checks and enabling buffer overflows. 3. The payload is asn1 encoded but the function just uses a simple c struct overlay to access some fields of the payload. Fix by using size_t for length calculations, adding U32_MAX boundary checks after alignment, and validating minimum request size and minimum reply size before copying from userspace. Do a very simple asn1 parsing of the payload up to the function value field.
Засегнати продукти
- Linux Linux: 20b0b0159390fa5c00a435195649680fefda81e0 преди f463f474773aa49ed1d6087d95d44cea7099fdc7; e2c6d91eb8b1533753755f07803e47eceed263d0 преди 2976b9d2e716c7e5487ca7c29a7bd076cf9adf08; e2c6d91eb8b1533753755f07803e47eceed263d0 преди 17ac0bc866fc624cd05f022dcd8b730c0af11bb1; f9da85d4780515f65983e0af151458599adaef3d; 6.12.114 преди 6.13
- Linux Linux: 7.1; преди 7.1; 7.1.10 до 7.1.*; от 7.2 нататък
История
- 26 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-80545
- https://nvd.nist.gov/vuln/detail/CVE-2026-80545
- https://git.kernel.org/stable/c/f463f474773aa49ed1d6087d95d44cea7099fdc7
- https://git.kernel.org/stable/c/2976b9d2e716c7e5487ca7c29a7bd076cf9adf08
- https://git.kernel.org/stable/c/17ac0bc866fc624cd05f022dcd8b730c0af11bb1