CVE-2026-80794: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-80794DEBIAN-CVE-2026-80794
Published 04-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80794 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: nci: fix uninit-value in the RF discover/activated NTF handlers nci_rf_discover_ntf_packet() and nci_rf_intf_activated_ntf_packet() each parse a notification into an on-stack struct (nci_rf_discover_ntf / nci_rf_intf_activated_ntf) that is not initialised. The RF technology-specific parameters are only extracted when rf_tech_specific_params_len is non-zero, so a notification that reports a zero length leaves the rf_tech_specific_params union uninitialised - and both handlers then pass it to nci_add_new_protocol(), which reads it: - discover: nci_add_new_target() -> nci_add_new_protocol(); - activated: nci_target_auto_activated() -> nci_add_new_protocol(). nci_add_new_protocol() uses nfca_poll->nfcid1_len as both a branch condition and a memcpy() length and copies nfcid1/sens_res/sel_res into ndev->targets, which is later exposed to user space via NFC_CMD_GET_TARGET. BUG: KMSAN: uninit-value in nci_add_new_protocol+0x624/0x6c0 nci_add_new_protocol+0x624/0x6c0 nci_ntf_packet+0x25b2/0x3c30 nci_rx_work+0x318/0x5d0 process_scheduled_works+0x84b/0x17a0 worker_thread+0xc10/0x11b0 kthread+0x376/0x500 Local variable ntf.i created at: nci_ntf_packet+0xbc2/0x3c30 Zero-initialise both on-stack notifications so the union reads back as zero when no technology-specific parameters are present.

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≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < 1007a6b429d756513abd25bd00290908f2e89a4a | ≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < 4bda9ef8392710f21e99027467f3f4afdfb5c99a | ≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < fe69fed3495f676578d49414a069ad7d8468e2ce | ≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < 7489f59d1ea2d3298aa41de7baf193e5e6e132f6 | ≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < 7086dab72b3ed95df96842801e10e935cfeb27a3 | ≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < 0d4b5cfab6891a5ca0f6aef209beebba4bd7c095 | ≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < 5bd00c0e1470d90d77a7c60242854257ddf14e00 | ≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < d6f743d3d388913135681cde051c08823730194f | ≥ e8c0dacd9836dc2dcb28d236c9cc3cfaa9965a20, < 8cbe06c1e699c0a165dae5093a2550e65f914818 | 3.3

3 vendors · 172 products

References

13 links
Show all 13 references