CVE-2026-89775

LOW

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

0.0/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Peaked at 2 mentions on most recent observed day (2026-09-17)
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-09-16: 1Mentions · 2026-09-17: 209-1609-17
Referenced assets3 URLs
Full discourse3 posts
  • Rıdvan Yağlı@ridvanyagli

    🔴 Linux KVM/arm64'te kritik CVE-2026-89775 - Guest-to-Host Escape açığı (CVSS 9.3) ! Nested virtualization etkin sistemlerde, negatif S1 walking level değerinin hatalı işlenmesi nedeniyle VNCR-TLB invalidation boyutu 0 hesaplanabiliyor ve gerekli invalidation atlanabiliyor. Bu durum, serbest bırakılmış host kernel belleğinin writable olarak map'li kalmasına ve uygun koşullarda Guest-to-Host Escape gerçekleştirilmesine yol açabiliyor. Fix mainline'da 8053393680d4 commit'iyle yayınlandı, upstream'de yamalandı. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8053393680d4

    00073435
    2.3K followersView on X
  • NEXSIGHT@NEXSIGHTNEWS

    LinuxカーネルのKVM/arm64にゲスト仮想マシンからホストへ抜け出せる脆弱性CVE-2026-89775(CVSS 9.3)— ネスト仮想化を有効にしたarm64ホストが対象、6.18.51と7.2.5以降では修正済み https://cyber.nexsight.co/articles/2026/09/17/kvm-arm64-cve-2026-89775-guest-to-host-escape-2026-09-17/

    0000146
    66 followersView on X
  • Daily CyberSecurity@Daily_CyberSec

    A critical KVM guest escape (CVE-2026-89775) enables an LPE to gain root on Linux hosts. Patch this KVM guest escape vulnerability now. #KVM #LinuxKernel #CVE202689775 #Cybersecurity #InfoSec https://securityonline.info/kvm-guest-escape-cve-2026-89775/

    00010294
    12.9K followersView on X

Explore more