CVE-2026-80862: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-80862DEBIAN-CVE-2026-80862
Published 04-09-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-80862 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.4% 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
0.16%
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. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix usage of page_frag_cache nvme uses page_frag_cache to preallocate PDU for each preallocated request of block device. Block devices are created in parallel threads, consequently page_frag_cache is used in not thread-safe manner. That leads to incorrect refcounting of backstore pages and premature free. That can be catched by !sendpage_ok inside network stack: WARNING: CPU: 7 PID: 467 at ../net/core/skbuff.c:6931 skb_splice_from_iter+0xfa/0x310. tcp_sendmsg_locked+0x782/0xce0 tcp_sendmsg+0x27/0x40 sock_sendmsg+0x8b/0xa0 nvme_tcp_try_send_cmd_pdu+0x149/0x2a0 Then random panic may occur. Fix that by serializing the usage of page_frag_cache.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

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

Ubuntu120 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< 6.12.111-1 | < 7.1.13-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 4e893ca8117022de68ce1b61c0309e3d17bb8a25, < d19f98c79f1b7e09e4cdf5c20d626e571e487467 | ≥ 4e893ca8117022de68ce1b61c0309e3d17bb8a25, < 64561afb42d8390695bf810d9bbd087cbca00291 | ≥ 4e893ca8117022de68ce1b61c0309e3d17bb8a25, < 0a9750263ffacbbd2048a391fd4bd22e2146c57d | ≥ 4e893ca8117022de68ce1b61c0309e3d17bb8a25, < 6e4cf281558709b92ec2ca3054fe2ffc69266ef9 | ≥ 4e893ca8117022de68ce1b61c0309e3d17bb8a25, < 36ac05f7cfd59d90c597071304b14e98090d5dd1 | c57506918b078ecab7dedebef0f34dbc23ae2e46 | ≥ 6.6.160, < 6.7 | 6.12

3 vendors · 123 products

References

9 links