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CVSS
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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
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Време до експлоатация
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: xen/gntalloc: validate grant count before allocation gntalloc_ioctl_alloc() allocates the grant-id array before checking whether the requested count fits within the global grant limit. Counts above that limit cannot succeed, so reject them before the user-controlled allocation reaches kcalloc(). Use a subtraction-based check while holding gref_mutex so adding the requested count cannot wrap. Also cast the count before advancing the per-file index so the page-size multiplication is performed in 64-bit arithmetic.
Засегнати продукти
- Linux Linux: dd3140588d9551235ebc2a0dacdca098e7677573 преди e2806390aa1c4d5b3f7a68f10a56ae12c71c00d8; dd3140588d9551235ebc2a0dacdca098e7677573 преди 71a0cf87e19fb35c4292ca88985e376e613c900a; dd3140588d9551235ebc2a0dacdca098e7677573 преди 641de086a05f349de7fc548612432bc2fed721ca; dd3140588d9551235ebc2a0dacdca098e7677573 преди 720554c04acba80018ded069d3e0984bebaee891; dd3140588d9551235ebc2a0dacdca098e7677573 преди 84d5727cef8eb9c8a28210ad248f1c70b223b065; dd3140588d9551235ebc2a0dacdca098e7677573 преди 231542f4e43cf9837cb520664545e85fbe666b7b; dd3140588d9551235ebc2a0dacdca098e7677573 преди 2299822f3f466b5dcad2377bf63986199f881a6b
- Linux Linux: 2.6.39; преди 2.6.39; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; от 7.2 нататък
История
- 23 октомври 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-98900
- https://nvd.nist.gov/vuln/detail/CVE-2026-98900
- https://git.kernel.org/stable/c/e2806390aa1c4d5b3f7a68f10a56ae12c71c00d8
- https://git.kernel.org/stable/c/71a0cf87e19fb35c4292ca88985e376e613c900a
- https://git.kernel.org/stable/c/641de086a05f349de7fc548612432bc2fed721ca
- https://git.kernel.org/stable/c/720554c04acba80018ded069d3e0984bebaee891
- https://git.kernel.org/stable/c/84d5727cef8eb9c8a28210ad248f1c70b223b065
- https://git.kernel.org/stable/c/231542f4e43cf9837cb520664545e85fbe666b7b
- https://git.kernel.org/stable/c/2299822f3f466b5dcad2377bf63986199f881a6b