7.5

CVE-2026-80987: linux

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-80987DEBIAN-CVE-2026-80987
Published 11-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-80987 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.50%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:11805-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: NTB: ntb_transport: Reject oversized TX buffers ntb_process_tx() handles an oversized buffer by calling tx_handler() with a NULL data pointer and returning success. ntb_netdev therefore neither frees the skb in its completion callback nor takes its enqueue error path, leaking it. Reject oversized buffers in ntb_transport_tx_enqueue() before acquiring a queue entry and return -EMSGSIZE. The caller retains ownership of the buffer, and the preceding netdev patch frees the skb when enqueue returns this permanent error.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

-0.01 pp

From 0.51% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.50%

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
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ fce8a7bb5b4bfb8a27324703fd5b002ee9247e90, < 4890152a3069f5cb58cc24b08cfd5fe95e568fa1 | ≥ fce8a7bb5b4bfb8a27324703fd5b002ee9247e90, < 668aa3238548584ca9772da9cf43ae8c2389bbf1 | ≥ fce8a7bb5b4bfb8a27324703fd5b002ee9247e90, < 9b0fa8a9e1057614a533cc3f18b17f82aab028d8 | ≥ fce8a7bb5b4bfb8a27324703fd5b002ee9247e90, < b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88 | ≥ fce8a7bb5b4bfb8a27324703fd5b002ee9247e90, < a7f22105a7df8c7fd74d0af27ace6fa94fe03d87 | ≥ fce8a7bb5b4bfb8a27324703fd5b002ee9247e90, < 6b6bbc6c878d64eacc60877df49fce7b1b6a08d0 | ≥ fce8a7bb5b4bfb8a27324703fd5b002ee9247e90, < 75a604e9f1cfdebda421062fdf42225ca32154cd | ≥ fce8a7bb5b4bfb8a27324703fd5b002ee9247e90, < a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7 | 3.9

3 vendors · 172 products

References

12 links
Show all 12 references