CVE-2026-80790: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-80790DEBIAN-CVE-2026-80790
Published 04-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80790 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: nvmet-fc: fix invalid free in LS IOD error path nvmet_fc_alloc_ls_iodlist() advances iod while initializing the LS IOD array. If an rqstbuf allocation or response buffer DMA mapping fails, the unwind loop decrements iod past the start of the array. The final kfree(iod) therefore frees an address before the allocated object. This can be reproduced with nvme-fcloop and failslab by setting fail-nth to 6 before creating a target port. KASAN reports: BUG: KASAN: invalid-free in nvmet_fc_register_targetport Free of addr ffff88816cf8ff48 by task nvmet_fail_nth/9552 Free the original allocation base stored in tgtport->iod instead. With this fix applied, the same sysfs write with fail-nth=6 returns -ENOMEM without any KASAN report.

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

Ubuntu168 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≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < b189c6e408896ccc23d2e76d7738847cdebf1532 | ≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 449e9c4f8db84ad9d9bb288029b230bcf590faa2 | ≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 1a8f007faefe8c226ec65896589f8d59b0a8d5a5 | ≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < d094582cce9c08516d714e7436a8f3b9211dda90 | ≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 371fb1bf902adaa59be32bd7e904a5317e604fd0 | ≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 8bce9cd08aae4283badf8ddc11fbb6f57b75a81e | ≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < bb9489f0dce58da730d3479588d6710d7a2c1b45 | ≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 94334ea92f4d7535f66f86e33681efa94827eddc | ≥ c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < ba98d6796d12258e837ece065d2ecb59d76ce4ff | 4.10

3 vendors · 171 products

References

13 links
Show all 13 references