CVE-2026-98248: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: arm64: percpu: Fix LSE operations on {8,16}-bit types The assembly for __percpu_##name##_case_##sz() and __percpu_##name##_return_case_##sz() doesn't use the 'sfx' macro argument to form the LSE instruction. Without 'sfx', a W register argument will imply a 32-bit memory location, and consequently {8,16}-bit ops will erroneously read and write 32 bits of memory when the LSE instruction is used. Fix this by appending 'sfx' to 'op_lse' to LSE instruction. It is not necessary (and not valid) to append 'sfx' to 'op_llsc', as 'op_llsc' is a register-register operation which does not access memory (and does not take a size suffix).

Засегнати продукти

• Linux Linux: 959bf2fd03b59fc107584c21425f3dc73c49f762 преди d69ab4480e49bf925f4781afcc9f284affcb96b6; 959bf2fd03b59fc107584c21425f3dc73c49f762 преди 390742871a723b52de9b92a94c0d1c85a2531e3e; 959bf2fd03b59fc107584c21425f3dc73c49f762 преди 843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003; 959bf2fd03b59fc107584c21425f3dc73c49f762 преди 8cf2093f5372952a9ebc805c418d45df7112cd14
• Linux Linux: 5.0; преди 5.0; 6.12.112 до 6.12.*; 6.18.54 до 6.18.*; 7.2.8 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-2026-98248
• https://nvd.nist.gov/vuln/detail/CVE-2026-98248
• https://git.kernel.org/stable/c/d69ab4480e49bf925f4781afcc9f284affcb96b6
• https://git.kernel.org/stable/c/390742871a723b52de9b92a94c0d1c85a2531e3e
• https://git.kernel.org/stable/c/843ace1d0a39e9b1cfcbfb3856a7b0fbdd9cd003
• https://git.kernel.org/stable/c/8cf2093f5372952a9ebc805c418d45df7112cd14