CVE-2026-68234: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix bo->pin leaking in amdgpu_bo_create_reserved amdgpu_bo_create_reserved() only allocates a new BO when *bo_ptr (struct amdgpu_bo **bo_ptr as input parameter) is NULL, it simply skips creation when *bo_ptr is non-NULL. But it unconditionally reserves, pins, gart allocates and maps the BO afterwards. When the same non-NULL BO pointer is passed in again, for example firmware buffers that live in adev and are re-loaded on every resume / cp_resume / start under AMDGPU_FW_LOAD_DIRECT, amdgpu_bo_pin() just increases pin_count unconditionally, however the matching teardown only unpins once, so pin_count never drops to zero, so TTM is not able to move, swap or evict a BO, causing BO leaks. This commit fixes this issue by only pinning the bo once at creation, and repeated calls no longer take additional pin references. (cherry picked from commit 3ddc0ae76202c447b6aec61e907b852bc94671cf)

Засегнати продукти

• Linux Linux: 53766e5adac75872e9d413cdbfd0e47ae40701f9 преди 7aea619d9f186dcf0f1289879e9edb69d2b56639; 53766e5adac75872e9d413cdbfd0e47ae40701f9 преди b572d0814c1366701ca704286589fab025802566; 53766e5adac75872e9d413cdbfd0e47ae40701f9 преди e06e0885725a16304b7723aeb478a78cca9dc96a; 53766e5adac75872e9d413cdbfd0e47ae40701f9 преди 51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc; 53766e5adac75872e9d413cdbfd0e47ae40701f9 преди 2f390b4c83011452753fd84972f657d2b00a952b; 53766e5adac75872e9d413cdbfd0e47ae40701f9 преди ba7b6444097a73ccd3d3ac9e2be4ebb73d226460; 53766e5adac75872e9d413cdbfd0e47ae40701f9 преди 9743f60013273987abf415dc47474683d22aaee9; 53766e5adac75872e9d413cdbfd0e47ae40701f9 преди a2f895f3c852063258d62e9f74b081de07ca95df
• Linux Linux: 4.14; преди 4.14; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 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-2026-68234
• https://nvd.nist.gov/vuln/detail/CVE-2026-68234
• https://git.kernel.org/stable/c/7aea619d9f186dcf0f1289879e9edb69d2b56639
• https://git.kernel.org/stable/c/b572d0814c1366701ca704286589fab025802566
• https://git.kernel.org/stable/c/e06e0885725a16304b7723aeb478a78cca9dc96a
• https://git.kernel.org/stable/c/51eeef1949c11d3dcb5f422a5d9b3f09ebe8a1bc
• https://git.kernel.org/stable/c/2f390b4c83011452753fd84972f657d2b00a952b
• https://git.kernel.org/stable/c/ba7b6444097a73ccd3d3ac9e2be4ebb73d226460
• https://git.kernel.org/stable/c/9743f60013273987abf415dc47474683d22aaee9
• https://git.kernel.org/stable/c/a2f895f3c852063258d62e9f74b081de07ca95df