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CVE-2026-74720
bpf: Preserve pointer state for commuted arithmetic
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve pointer state for commuted arithmetic When scalar += pointer is handled in adjust_ptr_min_max_vals(), the destination register inherits the pointer state from the source pointer. Copying only selected fields is fragile because pointer provenance is tracked by several bpf_reg_state fields. Use the caller's temporary offset register to preserve the scalar operand while replacing the destination with the full pointer state. This preserves the frame number for PTR_TO_STACK registers and keeps parent identity fields consistent.

Details
INFO

Published Date :

Aug. 22, 2026, 4:16 p.m.

Last Modified :

Aug. 22, 2026, 4:16 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-74720 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Apply kernel updates to preserve pointer state during arithmetic operations.
  • Update the Linux kernel to the resolved version.
  • Verify pointer state preservation in arithmetic operations.
  • Test for regressions after applying the update.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-74720.

URL Resource
https://git.kernel.org/stable/c/29c239f8dbec5ab33a61796724d189bddee6cd4b
https://git.kernel.org/stable/c/8109c25e0c41f5f19a1c2380bb49c991a877494e
https://git.kernel.org/stable/c/86b203aadc2930e0a4f9c6277b5b80ff3664c472
https://git.kernel.org/stable/c/8cb23101a3fcc7432b451ea3d0f14a90711f4acf
https://git.kernel.org/stable/c/a4c6f804b44c5c790269b25e0e61cf4e9f117c86
https://git.kernel.org/stable/c/d1959028190a7649b926f5867a58de5fe221b23c
https://git.kernel.org/stable/c/db6382ed3361bdd8129572a3423956cba1dae829
https://git.kernel.org/stable/c/eaffa1495e4fe6330aeff9f323ea3d48b01f118a
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-74720 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-74720 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-74720 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-74720 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 22, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f4d7e40a5b7157e1329c3c5b10f60d8289fc2941', 'lessThan': '86b203aadc2930e0a4f9c6277b5b80ff3664c472', 'versionType': 'git'}, {'status': 'affected', 'version': 'f4d7e40a5b7157e1329c3c5b10f60d8289fc2941', 'lessThan': '8109c25e0c41f5f19a1c2380bb49c991a877494e', 'versionType': 'git'}, {'status': 'affected', 'version': 'f4d7e40a5b7157e1329c3c5b10f60d8289fc2941', 'lessThan': 'd1959028190a7649b926f5867a58de5fe221b23c', 'versionType': 'git'}, {'status': 'affected', 'version': 'f4d7e40a5b7157e1329c3c5b10f60d8289fc2941', 'lessThan': '8cb23101a3fcc7432b451ea3d0f14a90711f4acf', 'versionType': 'git'}, {'status': 'affected', 'version': 'f4d7e40a5b7157e1329c3c5b10f60d8289fc2941', 'lessThan': '29c239f8dbec5ab33a61796724d189bddee6cd4b', 'versionType': 'git'}, {'status': 'affected', 'version': 'f4d7e40a5b7157e1329c3c5b10f60d8289fc2941', 'lessThan': 'db6382ed3361bdd8129572a3423956cba1dae829', 'versionType': 'git'}, {'status': 'affected', 'version': 'f4d7e40a5b7157e1329c3c5b10f60d8289fc2941', 'lessThan': 'eaffa1495e4fe6330aeff9f323ea3d48b01f118a', 'versionType': 'git'}, {'status': 'affected', 'version': 'f4d7e40a5b7157e1329c3c5b10f60d8289fc2941', 'lessThan': 'a4c6f804b44c5c790269b25e0e61cf4e9f117c86', 'versionType': 'git'}], 'programFiles': ['kernel/bpf/verifier.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.152', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.104', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.45', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.9', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/bpf/verifier.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Preserve pointer state for commuted arithmetic When scalar += pointer is handled in adjust_ptr_min_max_vals(), the destination register inherits the pointer state from the source pointer. Copying only selected fields is fragile because pointer provenance is tracked by several bpf_reg_state fields. Use the caller's temporary offset register to preserve the scalar operand while replacing the destination with the full pointer state. This preserves the frame number for PTR_TO_STACK registers and keeps parent identity fields consistent.
    Added Reference https://git.kernel.org/stable/c/29c239f8dbec5ab33a61796724d189bddee6cd4b
    Added Reference https://git.kernel.org/stable/c/8109c25e0c41f5f19a1c2380bb49c991a877494e
    Added Reference https://git.kernel.org/stable/c/86b203aadc2930e0a4f9c6277b5b80ff3664c472
    Added Reference https://git.kernel.org/stable/c/8cb23101a3fcc7432b451ea3d0f14a90711f4acf
    Added Reference https://git.kernel.org/stable/c/a4c6f804b44c5c790269b25e0e61cf4e9f117c86
    Added Reference https://git.kernel.org/stable/c/d1959028190a7649b926f5867a58de5fe221b23c
    Added Reference https://git.kernel.org/stable/c/db6382ed3361bdd8129572a3423956cba1dae829
    Added Reference https://git.kernel.org/stable/c/eaffa1495e4fe6330aeff9f323ea3d48b01f118a
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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