CVE-2026-99097: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: tee: shm: reject zero-sized allocations in tee_dyn_shm_alloc_helper() tee_dyn_shm_alloc_helper() derives nr_pages from a caller-supplied size and passes it to alloc_pages_exact() without checking it. For size == 0 nr_pages is 0, and alloc_pages_exact(0) calls get_order(0), which is documented as undefined and returns BITS_PER_LONG - PAGE_SHIFT. The page allocator then trips its order > MAX_PAGE_ORDER warning and fails the allocation; on a panic_on_warn kernel that ends the boot. This can be triggered by TEE_IOC_SHM_ALLOC with struct tee_ioctl_shm_alloc_data where size is 0. Reject a zero page count, as register_shm_helper() already does for the register path.

Засегнати продукти

• Linux Linux: cf4441503e20a0c0a36e0a98dcf57de3d3844c91 преди e5dc7af9c3a5373ee7a84959126e7dfa9e4ad50d; cf4441503e20a0c0a36e0a98dcf57de3d3844c91 преди 65cb86860a80ffc6af897d53f5bd4b1733bca0ec; cf4441503e20a0c0a36e0a98dcf57de3d3844c91 преди c2a97703359e25ec7ef8b2b0ef32fb3982add90a; cf4441503e20a0c0a36e0a98dcf57de3d3844c91 преди b7f925fd5226deb953c8dcdc9677d3fcc2717c00
• Linux Linux: 6.10; преди 6.10; 6.12.113 до 6.12.*; 6.18.57 до 6.18.*; 7.2.11 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-99097
• https://nvd.nist.gov/vuln/detail/CVE-2026-99097
• https://git.kernel.org/stable/c/e5dc7af9c3a5373ee7a84959126e7dfa9e4ad50d
• https://git.kernel.org/stable/c/65cb86860a80ffc6af897d53f5bd4b1733bca0ec
• https://git.kernel.org/stable/c/c2a97703359e25ec7ef8b2b0ef32fb3982add90a
• https://git.kernel.org/stable/c/b7f925fd5226deb953c8dcdc9677d3fcc2717c00