CVE-2026-52980: Software Security Vulnerability Vulnerability
MODERATECVE-2026-52980 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-476: NULL Pointer Dereference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product dereferences a pointer that it expects to be valid but is null.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-52980 at a Glance
Security Impact
CVSS: 5.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2026-52980
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.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-52980, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze 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-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. 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
References
Frequently Asked Questions
What is CVE-2026-52980?
Which Software versions are affected?
What version fixes CVE-2026-52980?
What is the CVSS score of CVE-2026-52980?
What CWE is associated with CVE-2026-52980?
How can I check Maven dependencies for CVE-2026-52980?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-748m-jm5v-3475",
"modified" : "2026-07-14T18:31:49Z",
"published" : "2026-06-24T18:32:42Z",
"aliases" : [ "CVE-2026-52980" ],
"details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/fair: Clear rel_deadline when initializing forked entities\n\nA yield-triggered crash can happen when a newly forked sched_entity\nenters the fair class with se->rel_deadline unexpectedly set.\n\nThe failing sequence is:\n\n 1. A task is forked while se->rel_deadline is still set.\n 2. __sched_fork() initializes vruntime, vlag and other sched_entity\n state, but does not clear rel_deadline.\n 3. On the first enqueue, enqueue_entity() calls place_entity().\n 4. Because se->rel_deadline is set, place_entity() treats se->deadline\n as a relative deadline and converts it to an absolute deadline by\n adding the current vruntime.\n 5. However, the forked entity's deadline is not a valid inherited\n relative deadline for this new scheduling instance, so the conversion\n produces an abnormally large deadline.\n 6. If the task later calls sched_yield(), yield_task_fair() advances\n se->vruntime to se->deadline.\n 7. The inflated vruntime is then used by the following enqueue path,\n where the vruntime-derived key can overflow when multiplied by the\n entity weight.\n 8. This corrupts cfs_rq->sum_w_vruntime, breaks EEVDF eligibility\n calculation, and can eventually make all entities appear ineligible.\n pick_next_entity() may then return NULL unexpectedly, leading to a\n later NULL dereference.\n\nA captured trace shows the effect clearly. Before yield, the entity's\nvruntime was around:\n\n 9834017729983308\n\nAfter yield_task_fair() executed:\n\n se->vruntime = se->deadline\n\nthe vruntime jumped to:\n\n 19668035460670230\n\nand the deadline was later advanced further to:\n\n 19668035463470230\n\nThis shows that the deadline had already become abnormally large before\nyield_task_fair() copied it into vruntime.\n\nrel_deadline is only meaningful when se->deadline really carries a\nrelative deadline that still needs to be placed against vruntime. A\nfreshly forked sched_entity should not inherit or retain this state.\nClear se->rel_deadline in __sched_fork(), together with the other\nsched_entity runtime state, so that the first enqueue does not interpret\nthe new entity's deadline as a stale relative deadline.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-52980"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/3da56dc063cd77b9c0b40add930767fab4e389f3"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/8f4a16200785f49cf02c5b71bdfe7a9dab63f23a"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/c71bf35caba12bfd9bc23e32b0bcd9e02d1cf1ac"
}, {
"type" : "WEB",
"url" : "https://git.kernel.org/stable/c/f3c16e1f4a314a20717ab90a41885f8111a242ab"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-476" ],
"severity" : "MODERATE",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-06-24T17:17:08Z"
}
}