CVE-2026-72050

Availability loss via unreleased BPID bitmap

Published Aug 15, 2026 · Updated Aug 15, 2026

Memory leakage in the octeontx2-af driver in Linux 6.9 allows attackers to reduce availability through BPID setup failures. During nix_setup_bpids(), a devm_kcalloc() failure returns without releasing the BPID bitmap previously allocated by rvu_alloc_bitmap(). Reachability requires the OcteonTX2 AF driver to enter BPID mapping setup and encounter an allocation failure; each failed setup leaves kernel heap memory allocated.

CVSS severity2.1
Low
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in the octeontx2-af driver in Linux 6.9 allows attackers to reduce availability through BPID setup failures. During nix_setup_bpids(), a devm_kcalloc() failure returns without releasing the BPID bitmap previously allocated by rvu_alloc_bitmap(). Reachability requires the OcteonTX2 AF driver to enter BPID mapping setup and encounter an allocation failure; each failed setup leaves kernel heap memory allocated.

The record

CVE
CVE-2026-72050
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.9
  2. Affected versionversion=d6212d2e41a0cb1ff6b059db79c70752cdafc95e <19c148cb82d11bb7cc7d86038a94e608a297e63c
  3. Affected versionversion=d6212d2e41a0cb1ff6b059db79c70752cdafc95e <36323f54cd323122a1be89ab2c316a6e55a94e30
  4. Affected versionversion=d6212d2e41a0cb1ff6b059db79c70752cdafc95e <7a939b683a74bd7d7ce4e3b7f696b491c8d71af4
  5. Affected versionversion=d6212d2e41a0cb1ff6b059db79c70752cdafc95e <d0c880c9f4051100517040d065caff60e913b659

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.9; version=d6212d2e41a0cb1ff6b059db79c70752cdafc95e <19c148cb82d11bb7cc7d86038a94e608a297e63c; version=d6212d2e41a0cb1ff6b059db79c70752cdafc95e <36323f54cd323122a1be89ab2c316a6e55a94e30; version=d6212d2e41a0cb1ff6b059db79c70752cdafc95e <7a939b683a74bd7d7ce4e3b7f696b491c8d71af4; version=d6212d2e41a0cb1ff6b059db79c70752cdafc95e <d0c880c9f4051100517040d065caff60e913b659

Published CVSS scores

2.1SUSECVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
2.9SUSECVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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