VulnerabilityPublished 24 Dec 2025Updated 21 Oct 2026

CVE-2025-68378: Linux kernel · bpf: Fix stackmap overflow check in __bpf_get_stackid()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in d6028caa0ee39dccd005468adfa3223b92bd3ad3 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:07 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in d6028caa0ee39dccd005468adfa3223b92bd3ad3, d1f424a77b6bd27b361737ed73df49a0158f1590, 4669a8db976c8cbd5427fe9945f12c5fa5168ff3 +6

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=5.10.110 <5.11 >=5.15.33 <5.16 >=5.16.19 <5.17 >=5.17.2 <5.18	Fixed in d6028caa0ee39dccd005468adfa3223b92bd3ad3 d1f424a77b6bd27b361737ed73df49a0158f1590 4669a8db976c8cbd5427fe9945f12c5fa5168ff3 23f852daa4bab4d579110e034e4d513f7d490846 5.18 5.17 5.16 5.11 2a008f6de163279deffd488c1deab081bce5667c
LinuxLinux	Affected =5.18	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stackmap overflow check in __bpf_get_stackid() Syzkaller reported a KASAN slab-out-of-bounds write in __bpf_get_stackid() when copying stack trace data. The issue occurs when the perf trace contains more stack entries than the stack map bucket can hold, leading to an out-of-bounds write in the bucket's data array.

References

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