CVE-2008-2931

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-01. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The do_change_type function in fs/namespace.c in the Linux kernel before 2.6.22 does not verify that the caller has the CAP_SYS_ADMIN capability, which allows local users to gain privileges or cause a denial of service by modifying the properties of a mountpoint.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

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 (value × EchelonGraph’s weight)
Severity78% × 45%
The EG Score, 7.8 of 10.
Exploitation0% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability30% × 15%
EchelonGraph's default before algorithm v3.4: CISA had not published Automatable for this CVE.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
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
0.4%
EPSS %ILE
29th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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 none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

Published

July 9, 2008

Last Modified

April 23, 2026

Advisory Details (4)

Auto-updated May 30, 2026
Patch available.
generic

About Secunia Research | Flexera

http://secunia.com/advisories/32023
generic

About Secunia Research | Flexera

http://secunia.com/advisories/31614
generic

About Secunia Research | Flexera

http://secunia.com/advisories/31551
generic

About Secunia Research | Flexera

http://secunia.com/advisories/30982

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-image-2.6.20-17-itanium (2.6.20-17.39) @ feisty2026-05-30ubuntu
redhatkernel-0:2.6.18-92.1.13.el52008-09-24redhat

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 (22 versions)
  • every version up to 1.17+etch.22etch2: fixed in 1.17+etch.22etch2
—
linux-2.62.6.18.dfsg.1-12 ... 2.6.18.dfsg.1-22etch1 (27 versions)
  • every version up to 2.6.18.dfsg.1-22etch2: fixed in 2.6.18.dfsg.1-22etch2
—
user-mode-linux2.6.18-1um-2 ... 2.6.18-1um-2etch4 (20 versions)
  • every version up to 2.6.18-1um-2etch.22etch2: fixed in 2.6.18-1um-2etch.22etch2
—

Weakness Classification(1)

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

All Vendor Advisories

(2)

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 8× in last 7d / 18× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 82 of 113 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 18 repeat rows among the latest 100 are merged into the row they repeat. The 31 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 13:38 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  2. 2026-10-10 19:53 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  3. 2026-10-09 20:00 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  4. 2026-10-08 16:33 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-10-07 23:37 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  6. 2026-10-06 15:09 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  7. 2026-10-05 17:37 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  8. 2026-10-04 23:15 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  9. 2026-10-03 14:20 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  10. 2026-10-01 19:42 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  11. 2026-09-30 14:57 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  12. 2026-09-29 07:50 UTCEG score recompute
  13. 2026-09-26 15:52 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  14. 2026-09-18 19:20 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  15. 2026-09-17 19:20 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  16. 2026-09-15 03:04 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  17. 2026-09-13 16:40 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-09-12 14:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-09-10 09:24 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-09-06 13:41 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-09-05 15:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-09-04 13:55 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-09-04 04:59 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-08-30 01:14 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-08-28 21:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
Show 57 more
  1. 2026-08-15 01:24 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-08-08 16:31 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-08-07 16:21 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  4. 2026-08-06 13:41 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  5. 2026-08-05 19:11 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  6. 2026-08-04 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  7. 2026-08-03 10:28 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  8. 2026-07-30 01:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-07-25 14:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-07-24 14:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-07-23 14:14 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-07-23 00:56 UTCEG score recompute
  13. 2026-07-23 00:35 UTCEG score recompute
  14. 2026-07-23 00:01 UTCEG score recompute
  15. 2026-07-22 21:40 UTCEG score recompute
  16. 2026-07-20 17:03 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  17. 2026-07-18 09:59 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  18. 2026-07-16 16:58 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  19. 2026-07-15 16:54 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  20. 2026-07-15 01:55 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  21. 2026-07-13 22:25 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  22. 2026-07-13 06:07 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  23. 2026-07-11 08:22 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  24. 2026-07-09 19:04 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  25. 2026-07-08 15:09 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  26. 2026-07-06 16:23 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  27. 2026-07-06 02:19 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  28. 2026-07-05 02:26 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  29. 2026-07-04 06:27 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  30. 2026-07-02 14:00 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  31. 2026-07-01 15:02 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  32. 2026-06-30 23:19 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  33. 2026-06-28 14:03 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  34. 2026-06-28 04:52 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  35. 2026-06-27 03:04 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  36. 2026-06-25 13:46 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  37. 2026-06-24 14:02 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  38. 2026-06-23 21:29 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  39. 2026-06-22 14:22 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  40. 2026-06-21 14:53 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  41. 2026-06-21 01:56 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  42. 2026-06-19 19:22 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  43. 2026-06-18 17:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  44. 2026-06-17 17:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  45. 2026-06-16 17:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  46. 2026-06-15 17:44 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  47. 2026-06-13 22:57 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  48. 2026-06-12 23:08 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  49. 2026-06-11 13:56 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  50. 2026-06-10 22:14 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  51. 2026-06-10 13:17 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  52. 2026-06-08 14:13 UTCEPSS rescoreEPSS <0.1% · 7th percentile
  53. 2026-06-07 15:22 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  54. 2026-06-06 13:44 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  55. 2026-06-05 22:44 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  56. 2026-06-05 06:07 UTCEPSS rescoreEPSS <0.1% · 8th percentile
  57. 2026-06-04 13:09 UTCEPSS rescoreEPSS <0.1% · 7th percentile

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Frequently asked(5)

What is CVE-2008-2931?
CVE-2008-2931 is a high-severity vulnerability; its CVE record was published on July 9, 2008. The dochangetype function in fs/namespace.c in the Linux kernel before 2.6.22 does not verify that the caller has the CAPSYSADMIN capability, which allows local users to gain privileges or cause a denial of service by modifying the properties of a mountpoint.
When was CVE-2008-2931 made public?
CVE-2008-2931 was made public on July 8, 2007: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 9, 2008. EchelonGraph's copy of the record carries a last-modified date of April 23, 2026; the record at its source may have been updated since.
Is CVE-2008-2931 actively exploited?
CVE-2008-2931 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2008-2931?
CVE-2008-2931 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2008-2931?
A fix for CVE-2008-2931 is available: update to the fixed version the vendor names in its advisory.

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