CVE-2026-89751: falha em Linux
x86/tdx: Fix off-by-one in port I/O handling
Publicada em · Atualizada em
3Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackepss 0.2%
probabilidade de exploração
0.2%top 94% das CVEs
exploração observada
nãonenhuma fonte reporta
In the Linux kernel, the following vulnerability has been resolved:
x86/tdx: Fix off-by-one in port I/O handling
handle_in() and handle_out() in arch/x86/coco/tdx/tdx.c use:
u64 mask = GENMASK(BITS_PER_BYTE * size, 0);
GENMASK(h, l) includes bit h. For size=1 (INB), this produces
GENMASK(8, 0) = 0x1FF (9 bits) instead of GENMASK(7, 0) = 0xFF (8
bits). The mask is one bit too wide for all I/O sizes.
Fix the mask calculation.
Produtos afetados
Linux · LinuxCVEs relacionadas — Linux
No mesmo produto, das mais perigosas para as menos.
CVE-2024-53197HIGHALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devicesEPSS 4.1%KEVCVE-2026-31431HIGHcrypto: algif_aead - Revert to operating out-of-placeEPSS 3.4%KEVCVE-2024-53104HIGHmedia: uvcvideo: Skip parsing frames of type UVC_VS_UNDEFINED in uvc_parse_formatEPSS 3.4%KEVCVE-2025-39682CRITICALtls: fix handling of zero-length records on the rx_listEPSS 2.9%KEVCVE-2024-36971HIGHnet: fix __dst_negative_advice() raceEPSS 2.7%KEVCVE-2024-53150HIGHALSA: usb-audio: Fix out of bounds reads when finding clock sourcesEPSS 1.4%KEV
Referências
https://git.kernel.org/stable/c/0f63e656b1c679d32ac595de29d10c03efca6a25https://git.kernel.org/stable/c/220011fe95fc78b2bc2d7d43893bc73957a5c811https://git.kernel.org/stable/c/222b7005e4519f633b4cd666226256abbab46a1ahttps://git.kernel.org/stable/c/bb45f705c4440dd3c689328319b88dd28770bbb8https://git.kernel.org/stable/c/c4a22154870813d10aa0b4c734a574c726f9d4b0https://git.kernel.org/stable/c/c6875423ad849ac234ab9812eb72f37ff8a490b4