5.6

CVE-2026-72017: linux

CVSS: 5.6v4.0MediumReceived
AliasesUBUNTU-CVE-2026-72017DEBIAN-CVE-2026-72017
Published 15-08-2026Last modified 23-08-2026
Open JSON

Vulnerability summary

CVE-2026-72017 is a medium (CVSS 5.6) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.6/10
010
Medium · v4.0 (OSV · Ubuntu), selected by version preference
EPSS score
0.21%
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 18 · Related 18
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23881-1SUSE-SU-2026:23887-1SUSE-SU-2026:23897-1SUSE-SU-2026:23902-1SUSE-SU-2026:24181-1

Timeline

  1. 15-08-2026
    PublishedVulnerability first disclosed.
  2. 23-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: macb: drop in-flight Tx SKBs on close The MACB driver has since forever leaked the outgoing SKBs that have not yet been marked as completed. They live in queue->tx_skb which gets freed without remorse nor checking. macb_free_consistent() gets called in a few codepaths, but only close will trigger the added expressions. In macb_open() and macb_alloc_consistent() failure cases, queues' tx_skb just got allocated and are empty.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.21%

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) | < 6.8.0-147.147 | < 7.0.0-38.38
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70 | < 7.0.0-1014.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.101-1 | < 7.1.5-1
  • linux-6.12< 6.12.101-1~deb12u1
Linux1 product
  • linux≥ 89e5785fc8a6b9eafd37f2318a9a76d479c796be, < 0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655 | ≥ 89e5785fc8a6b9eafd37f2318a9a76d479c796be, < 6124bd785073659c99385094657b77382ebce11b | ≥ 89e5785fc8a6b9eafd37f2318a9a76d479c796be, < 2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4 | ≥ 89e5785fc8a6b9eafd37f2318a9a76d479c796be, < 26b131b2d5b55a81ef6182769d28105a870c0eb2 | ≥ 89e5785fc8a6b9eafd37f2318a9a76d479c796be, < 109241d9880488aafd8e104832b4d4859ad57244 | ≥ 89e5785fc8a6b9eafd37f2318a9a76d479c796be, < 27f575836cfebbf872dec020428742b10650a955 | 2.6.20

3 vendors · 172 products

References

18 links
Show all 18 references