CVE-2026-63869: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-p8w8-3vc5-9f6x
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CVSS 7.6
CWE-190
Published
Advisory Summary

CVE-2026-63869 is a HIGH (CVSS 7.6) security vulnerability vulnerability (CWE-190: Integer Overflow or Wraparound) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. this occurs when an integer value is incremented to a value that is too large to store in the associated representation. when this occurs, the value may become a very small or negative number.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-63869 at a Glance

CVE Identifier CVE-2026-63869
GHSA Identifier GHSA-p8w8-3vc5-9f6x
Severity HIGH
CVSS v3.1 Base Score 7.6
CWE Classification CWE-190: Integer Overflow or Wraparound
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L).

Attack Vector Adjacent (AV:A)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability Low (A:L)

How to Fix CVE-2026-63869

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-63869, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-190: Integer Overflow or Wraparound, where the product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. this occurs when an integer value is incremented to a value that is too large to store in the associated representation. when this occurs, the value may become a very small or negative number. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap When parsing the radiotap header of an injected frame, ieee80211_parse_tx_radiotap() uses the IEEE80211_RADIOTAP_ANTENNA value directly as a shift count: info->control.antennas |= BIT(*iterator.this_arg); *iterator.this_arg is an 8-bit value taken straight from the frame supplied by userspace, so BIT() can be asked to shift by up to 255. That is undefined behaviour on the unsigned long and is reported by UBSAN: UBSAN: shift-out-of-bounds in net/mac80211/tx.c:2174:30 shift exponent 235 is too large for 64-bit type 'unsigned long' Call Trace: ieee80211_parse_tx_radiotap+0xadb/0x1950 net/mac80211/tx.c:2174 ieee80211_monitor_start_xmit+0xb1f/0x1250 net/mac80211/tx.c:2451 ... packet_sendmsg+0x3eb6/0x50f0 net/packet/af_packet.c:3109 info->control.antennas is a 2-bit bitmap (u8 antennas:2), so only antenna indices 0 and 1 can ever be represented. Ignore any larger value instead of shifting out of bounds.

References

NVD — CVE-2026-63869 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63869
git.kernel.org/stable/c/033ce021a2... WEB
https://git.kernel.org/stable/c/033ce021a220913ac02416fcb5ac883a9ff8b6c7
git.kernel.org/stable/c/6c0cf89f36... WEB
https://git.kernel.org/stable/c/6c0cf89f36ac0c0fd8687a4ccdce2efb23a9c663
git.kernel.org/stable/c/9b40c59bab... WEB
https://git.kernel.org/stable/c/9b40c59bab08f2a99abf969cc0bb92fa49de004b
git.kernel.org/stable/c/f6d3dc8e84... WEB
https://git.kernel.org/stable/c/f6d3dc8e8492bf8435e0b23c99472af7bafd6b44

Frequently Asked Questions

What is CVE-2026-63869?
CVE-2026-63869 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-190: Integer Overflow or Wraparound.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-63869?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-63869?
CVE-2026-63869 has a CVSS v3.1 base score of 7.6 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
What CWE is associated with CVE-2026-63869?
CVE-2026-63869 is classified under CWE-190: Integer Overflow or Wraparound (The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.).
How can I check Maven dependencies for CVE-2026-63869?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
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  "id" : "GHSA-p8w8-3vc5-9f6x",
  "modified" : "2026-07-20T15:31:49Z",
  "published" : "2026-07-19T15:30:28Z",
  "aliases" : [ "CVE-2026-63869" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap\n\nWhen parsing the radiotap header of an injected frame,\nieee80211_parse_tx_radiotap() uses the IEEE80211_RADIOTAP_ANTENNA value\ndirectly as a shift count:\n\n\tinfo->control.antennas |= BIT(*iterator.this_arg);\n\n*iterator.this_arg is an 8-bit value taken straight from the frame\nsupplied by userspace, so BIT() can be asked to shift by up to 255. That\nis undefined behaviour on the unsigned long and is reported by UBSAN:\n\n  UBSAN: shift-out-of-bounds in net/mac80211/tx.c:2174:30\n  shift exponent 235 is too large for 64-bit type 'unsigned long'\n  Call Trace:\n   ieee80211_parse_tx_radiotap+0xadb/0x1950 net/mac80211/tx.c:2174\n   ieee80211_monitor_start_xmit+0xb1f/0x1250 net/mac80211/tx.c:2451\n   ...\n   packet_sendmsg+0x3eb6/0x50f0 net/packet/af_packet.c:3109\n\ninfo->control.antennas is a 2-bit bitmap (u8 antennas:2), so only antenna\nindices 0 and 1 can ever be represented. Ignore any larger value instead\nof shifting out of bounds.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-63869"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/033ce021a220913ac02416fcb5ac883a9ff8b6c7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6c0cf89f36ac0c0fd8687a4ccdce2efb23a9c663"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9b40c59bab08f2a99abf969cc0bb92fa49de004b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f6d3dc8e8492bf8435e0b23c99472af7bafd6b44"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-190" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T15:16:53Z"
  }
}