CVE-2026-80783: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-80783DEBIAN-CVE-2026-80783
Published 04-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80783 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.7% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2026-0506OPENSUSE-SU-2026:11773-1

Timeline

  1. 04-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event() magicmouse_raw_event() handles DOUBLE_REPORT_ID (0xf7) packets, which pack two touch reports into one, by splitting the packet and calling itself on each half. The only guard against runaway recursion is a "size < 1" check, which stops zero-sized calls but does not bound the recursion depth. A malicious HID device that matches this driver can send a report starting with DOUBLE_REPORT_ID and filled with the sequence [0xf7, 0x00]. Each level consumes two bytes and recurses on the remainder, so an incoming report of up to HID_MAX_BUFFER_SIZE (16 KiB) drives roughly 8000 nested calls. That easily exhausts the 16 KiB kernel stack, leading to a stack overflow: a panic with CONFIG_VMAP_STACK, or memory corruption without it. A double report only ever wraps two normal reports; it is never legitimately nested. Refuse to re-enter the DOUBLE_REPORT_ID case from a recursive call so the recursion depth is bounded to two, while all valid packets keep being parsed exactly as before.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.111-1 | < 7.1.12-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ a462230e16acc8664145216da3c928d03556691a, < 26c45abed62536aabf4033fb6d64cf72e93374e9 | ≥ a462230e16acc8664145216da3c928d03556691a, < 8a10a624996f16628234306b46f0cf36707d78bd | ≥ a462230e16acc8664145216da3c928d03556691a, < d16df755b4493b6d37803c628b2c621d096796a8 | ≥ a462230e16acc8664145216da3c928d03556691a, < bec338b07beb883726b32192c8f01c601bc76fda | ≥ a462230e16acc8664145216da3c928d03556691a, < 70589b0c005db003f6d8ae4db3c4d54fed7b83e4 | ≥ a462230e16acc8664145216da3c928d03556691a, < a33a596d3ad8dfe6c96a368097a028abeee16c17 | ≥ a462230e16acc8664145216da3c928d03556691a, < d095de37f78c5f32a4252ef0f99b84ba76550b86 | ≥ a462230e16acc8664145216da3c928d03556691a, < db8d634128d2ba88d79c0b601e983ebe14bb0519 | 2.6.37

3 vendors · 172 products

References

13 links
Show all 13 references