CVE-2008-4302

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-05-02. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 5.5Exploit: Exploit-DB (verified) · public exploitExposed services: Not assessed

A fix is available — apply it.

fs/splice.c in the splice subsystem in the Linux kernel before 2.6.22.2 does not properly handle a failure of the add_to_page_cache_lru function, and subsequently attempts to unlock a page that was not locked, which allows local users to cause a denial of service (kernel BUG and system crash), as demonstrated by the fio I/O tool.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
55
EG Risk 55/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation65% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 29, 2008

Last Modified

April 23, 2026

Advisory Details (6)

Auto-updated May 30, 2026
Patch available.
generic

oss-security - CVE request: kernel: splice: fix bad unlock_page() in error case

http://www.openwall.com/lists/oss-security/2008/09/16/10
generic

[SECURITY] [DSA 1653-1] New Linux 2.6.18 packages fix several vulnerabilities

http://www.debian.org/security/2008/dsa-1653
generic

About Secunia Research | Flexera

http://secunia.com/advisories/32759
generic

About Secunia Research | Flexera

http://secunia.com/advisories/32485
generic

About Secunia Research | Flexera

http://secunia.com/advisories/32237
generic

LKML: Jens Axboe: [PATCH] splice: fix bad unlock_page() in error case

http://lkml.org/lkml/2007/7/20/168

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatkernel-0:2.6.18-92.1.18.el52008-11-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 1 ecosystem)
Debian:4.0(3)
PackageVulnerable rangeFix by version rangeDependents
fai-kernels1.17 ... 1.17etch1 (23 versions)
  • every version up to 1.17+etch.22etch3: fixed in 1.17+etch.22etch3
—
linux-2.62.6.18.dfsg.1-12 ... 2.6.18.dfsg.1-22etch2 (28 versions)
  • every version up to 2.6.18.dfsg.1-22etch3: fixed in 2.6.18.dfsg.1-22etch3
—
user-mode-linux2.6.18-1um-2 ... 2.6.18-1um-2etch4 (21 versions)
  • every version up to 2.6.18-1um-2etch.22etch3: fixed in 2.6.18-1um-2etch.22etch3
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 132 total refreshes for this CVE.

  1. 2026-10-09 20:00 UTCEPSS rescore
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-32384✓ verified
    First seen Jul 20, 2007

    Linux Kernel 2.6.x - 'add_to_page_cache_lru()' Local Denial of Service

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2008-4302?
CVE-2008-4302 is a medium vulnerability published on September 29, 2008. fs/splice.c in the splice subsystem in the Linux kernel before 2.6.22.2 does not properly handle a failure of the addtopagecachelru function, and subsequently attempts to unlock a page that was not locked, which allows local users to cause a denial of service (kernel BUG and system crash), as…
When was CVE-2008-4302 disclosed?
CVE-2008-4302 was first published on September 29, 2008, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2008-4302 actively exploited?
CVE-2008-4302 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2008-4302?
CVE-2008-4302 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2008-4302?
A fix for CVE-2008-4302 is available: update to the fixed version the vendor names in its advisory.

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