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CVE-2026-31699: Linux, грешка в паметта

7.1

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp: Don't attempt to copy CSR to userspace if PSP command failed When retrieving the PEK CSR, don't attempt to copy the blob to userspace if the firmware command failed. If the failure was due to an invalid length, i.e. the userspace buffer+length was too small, copying the number of bytes _firmware_ requires will overflow the kernel-allocated buffer and leak data to userspace. BUG: KASAN: slab-out-of-bounds in instrument_copy_to_user ../include/linux/instrumented.h:129 [inline] BUG: KASAN: slab-out-of-bounds in _inline_copy_to_user ../include/linux/uaccess.h:205 [inline] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x66/0xa0 ../lib/usercopy.c:26 Read of size 2084 at addr ffff898144612e20 by task syz.9.219/21405 CPU: 14 UID: 0 PID: 21405 Comm: syz.9.219 Tainted: G U O 7.0.0-smp-DEV #28 PREEMPTLAZY Tainted: [U]=USER, [O]=OOT_MODULE Hardware name: Google, Inc. Arcadia_IT_80/Arcadia_IT_80, BIOS 12.62.0-0 11/19/2025 Call Trace: <TASK> dump_stack_lvl+0xc5/0x110 ../lib/dump_stack.c:120 print_address_description ../mm/kasan/report.c:378 [inline] print_report+0xbc/0x260 ../mm/kasan/report.c:482 kasan_report+0xa2/0xe0 ../mm/kasan/report.c:595 check_region_inline ../mm/kasan/generic.c:-1 [inline] kasan_check_range+0x264/0x2c0 ../mm/kasan/generic.c:200 instrument_copy_to_user ../include/linux/instrumented.h:129 [inline] _inline_copy_to_user ../include/linux/uaccess.h:205 [inline] _copy_to_user+0x66/0xa0 ../lib/usercopy.c:26 copy_to_user ../include/linux/uaccess.h:236 [inline] sev_ioctl_do_pek_csr+0x31f/0x590 ../drivers/crypto/ccp/sev-dev.c:1872 sev_ioctl+0x3a4/0x490 ../drivers/crypto/ccp/sev-dev.c:2562 vfs_ioctl ../fs/ioctl.c:51 [inline] __do_sys_ioctl ../fs/ioctl.c:597 [inline] __se_sys_ioctl+0x11d/0x1b0 ../fs/ioctl.c:583 do_syscall_x64 ../arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe0/0x800 ../ar

Засегнати продукти

  • Linux Linux: e799035609e1526761aa2f896a974b233d04d36d преди 502d10a1d9d477e6c7fc7021a2dac7018f4ab8b5; e799035609e1526761aa2f896a974b233d04d36d преди 0fb87e44b81385f940b482cba5b3f0bd18fb8185; e799035609e1526761aa2f896a974b233d04d36d преди 372116eece159adff631b1508344c8b85ebf9559; e799035609e1526761aa2f896a974b233d04d36d преди 607ba280f2adb5092cf5386c3935afac2ca0031a; e799035609e1526761aa2f896a974b233d04d36d преди 59e9ae81f8670ccc780bc75f45a355736f640ec9; e799035609e1526761aa2f896a974b233d04d36d преди 111dcc6d0f016076745824a787d25609d0022f4c; e799035609e1526761aa2f896a974b233d04d36d преди 3b4fd8f15765d9a3105b834dba8a05d025e5e16e; e799035609e1526761aa2f896a974b233d04d36d преди abe4a6d6f606113251868c2c4a06ba904bb41eed
  • Linux Linux: 4.16; преди 4.16; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.136 до 6.6.*; 6.12.84 до 6.12.*; 6.18.25 до 6.18.*; 7.0.2 до 7.0.*; от 7.1 нататък
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: всички версии

Вид слабост

История

  • 1 май 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-31699: Linux, грешка в паметта | freedomonline.bg