VulnSocial

CVE-2026-80580General

LOWCVSS 7.8 · HIGH

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

NVD description

In the Linux kernel, the following vulnerability has been resolved: fbdev: bound mode sysfs output to the sysfs buffer mode_string() uses snprintf() which can return a value larger than the remaining buffer space. show_modes() accumulates the return value into i without checking whether i has reached PAGE_SIZE, causing the offset to advance past the sysfs buffer if the modelist is long enough. Add a size parameter to mode_string() and use scnprintf() to return only the bytes actually written. Add an early return when offset already exceeds the buffer. In show_modes(), stop accumulating once the buffer is full.

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0.0/ 10 priority

Sources & remediation

Other references

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

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

What's happening

  • Technical details provided in 2 signals
  • General: 2 classified signals
  • Disclosure: 1 classified signal
  • Peaked at 2 mentions on most recent observed day (2026-08-27)
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-08-26: 1Mentions · 2026-08-27: 2Technical Details · 2026-08-27: 208-2608-27
Signal classification2 categories
General
266.7%
Disclosure
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-08-261
General1
2026-08-272
Disclosure1General1
Full discourse3 posts
  • CVE@CVEnew
    General

    CVE-2026-80580 In the Linux kernel, the following vulnerability has been resolved: fbdev: bound mode sysfs output to the sysfs buffer mode_string() uses snprintf() which can retur… https://www.cve.org/CVERecord?id=CVE-2026-80580

    Post summary

    The post announces that CVE-2026-80580 in the Linux kernel’s fbdev subsystem has been resolved, but does not provide a PoC, exploit code, or specific patch details, nor does it indicate active exploitation.

    000101.3K
    58.0K followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-80580 In the Linux kernel, the following vulnerability has been resolved: fbdev: bound mode sysfs output to the sysfs buffer mode_string() uses snprintf() which can retur… https://www.cve.org/CVERecord?id=CVE-2026-80580 ----- Traducción: CVE-2026-80580 En … https://infoflow.cloud`

    Post summary

    The text announces the resolution of CVE‑2026‑80580 in the Linux kernel, noting some technical details and linking to the official CVE record, but it provides no proof‑of‑concept, exploit code, or active exploitation evidence.

    0000060
    102 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-80580 Linux Kernel fbdev Buffer Overflow in mode_string() https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-80580

    Post summary

    A brief notice of CVE‑2026‑80580 has been posted, but no further technical detail, PoC, or exploitation status is provided.

    00000106
    4.1K followersView on X

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