CVE-2026-80802: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-80802DEBIAN-CVE-2026-80802
Published 04-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80802 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.5% 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
0.24%
0%100%
Low · +0.05 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: nfc: fdp: bound the device-reported read length and fix an skb leak fdp_nci_i2c_read() takes the next packet length from two device-supplied bytes and never validates it. The value is a u16 used as the i2c_master_recv() count into a 261-byte on-stack buffer: a malicious, counterfeit or malfunctioning controller (or an i2c bus interposer) can drive it far past the buffer for a stack out-of-bounds write that clobbers the canary and return address, or below the minimum frame size (directly, or by truncating the computed sum) so the header/LRC strip and the next length read run past a short receive. Reject a length outside [FDP_NCI_I2C_MIN_PAYLOAD, FDP_NCI_I2C_MAX_PAYLOAD], as a corrupted packet already is, and force resynchronization. The same loop allocates one data skb per iteration and assumes a length packet followed by a data packet; a device that sends two data packets in one call leaks the first skb when the second allocation overwrites it. Free a previously allocated skb before allocating the next.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

+0.05 pp

From 0.19% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.24%

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 | < 6.12.107-1 | < 7.1.12-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ a06347c04c13e380afce0c9816df51f00b83faf1, < d9498ab9a78cb63d78dbe4f221d8cc6c91f285ee | ≥ a06347c04c13e380afce0c9816df51f00b83faf1, < 1fc32327b927a6e2cde086f82575c29880844228 | ≥ a06347c04c13e380afce0c9816df51f00b83faf1, < 8d2c243b79854628ff076c38748c020042f02f57 | ≥ a06347c04c13e380afce0c9816df51f00b83faf1, < fc3c2bd5b1ec6c7cbc8a50e32d9bcec114f25463 | ≥ a06347c04c13e380afce0c9816df51f00b83faf1, < 0d723090645b82c1cb27cfd7ebf81f0e7c96bcae | ≥ a06347c04c13e380afce0c9816df51f00b83faf1, < db7e464b350969c6ea8340de00d9796e5fd5123b | ≥ a06347c04c13e380afce0c9816df51f00b83faf1, < e5eec121f2c3bc4c7022613bedd9121a8aa4c949 | ≥ a06347c04c13e380afce0c9816df51f00b83faf1, < 1aa3fc769b0c45bd19f8dab1697084c2b3f6d706 | ≥ a06347c04c13e380afce0c9816df51f00b83faf1, < 7ad21dcfeb5181af0c3ee2608808c0c0a5283aa1 | 4.4

3 vendors · 172 products

References

13 links
Show all 13 references