A vulnerability exists in the memory management subsystem of the Linux kernel. The lock handling for accessing and updating virtual memory areas (VMAs) is incorrect, leading to use-after-free problems. This issue can be successfully exploited to execute arbitrary kernel code, escalate containers, and gain root privileges.
CVE-2023-3269
“—” beside the score: it is equal to NVD's CVSS score.
Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2023-07-11. NVD baseline CVSS 7.8; sources differ by 0.0.
- Public exploit or proof-of-concept code is available
A fix is available — apply it.
- CVSS v3
- 7.8
- EG Score
- 7.8HIGHmedium confidence
- EG Risk
- 51EG Risk 51/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity78% × 45%Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (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. - EPSS PROB
- 1.3%
- EPSS %ILE
- 70th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 1.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-20). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (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
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
July 11, 2023
Last Modified
November 21, 2024
References (9)
- secalert@redhat · CVE Programhttp://seclists.org/fulldisclosure/2023/Jul/43Mailing List · Third Party Advisory
- secalert@redhat · CVE Programhttp://www.openwall.com/lists/oss-security/2023/07/28/1Mailing List
- secalert@redhat · CVE Programhttp://www.openwall.com/lists/oss-security/2023/08/25/1Mailing List
- secalert@redhat · CVE Programhttp://www.openwall.com/lists/oss-security/2023/08/25/4Mailing List
- secalert@redhat · CVE Programhttps://access.redhat.com/security/cve/CVE-2023-3269Third Party Advisory
- secalert@redhat · CVE Programhttps://bugzilla.redhat.com/show_bug.cgi?id=2215268Issue Tracking · Patch · Third Party Advisory
- secalert@redhat · CVE Programhttps://lists.fedoraproject.org/archives/list/[email protected]/message/U6AAA64CUPSMBW6XDTXPQJ3KQWYQ4K7L/Mailing List · Third Party Advisory
- secalert@redhat · CVE Programhttps://security.netapp.com/advisory/ntap-20230908-0001/Third Party Advisory
- secalert@redhat · CVE Programhttps://www.openwall.com/lists/oss-security/2023/07/05/1Mailing List
Vendor Advisories for CVE-2023-3269(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-oem-6.1-headers-6.1.0-1017 (6.1.0-1017.17) @ jammy | 2026-10-21 | ubuntu |
| ubuntu | linux-gcp-headers-6.2.0-1010 (6.2.0-1010.10) @ lunar | 2026-10-21 | ubuntu |
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 3 ecosystems)
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| linux | 6.1.27-1 |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| linux | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| linux | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(2)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 11× in last 7d / 36× 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 86 of 205 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. 14 repeat rows among the latest 100 are merged into the row they repeat. The 119 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-23 16:29 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-22 16:31 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-21 16:29 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-21 01:52 UTCEG score recompute
- 2026-10-21 01:52 UTCVendor advisory
- 2026-10-21 01:52 UTCGHSA enrichmentGHSA-2j2w-8gvj-wjmj · GitHub severity HIGH · GitHub CVSS 7.8
- 2026-10-20 16:30 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-19 16:29 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-18 16:29 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-18 08:00 UTCEG score recompute
- 2026-10-17 16:30 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-16 16:36 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-10-15 16:29 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-14 16:30 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-13 16:30 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-13 11:54 UTCOSV refresh
- 2026-10-12 18:26 UTCEG score recompute
- 2026-10-12 16:31 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-11 21:52 UTCEG score recompute
- 2026-10-11 13:45 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-10 19:57 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-09 20:05 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-08 17:06 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-07 23:46 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-06 15:15 UTCEPSS rescoreEPSS 1.3% · 69th percentile
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- 2026-10-05 17:41 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-03 14:23 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-10-01 19:48 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-30 16:23 UTCEG score recompute
- 2026-09-30 15:01 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-29 15:17 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-28 13:49 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-27 13:42 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-26 15:56 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-26 00:22 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-24 14:01 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-23 13:46 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-23 05:45 UTCOSV refresh
- 2026-09-18 19:25 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-17 19:25 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-16 14:06 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-16 05:11 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-13 16:44 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-12 14:58 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-11 14:50 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-11 09:34 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-08 21:58 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-07 15:59 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-06 13:45 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-05 15:26 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-04 13:58 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-04 05:04 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-04 00:16 UTCOSV refresh
- 2026-09-02 14:09 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-09-01 13:51 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-30 19:15 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-30 01:20 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-28 21:39 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-27 14:23 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-26 14:43 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-25 13:46 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-23 00:17 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-21 23:47 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-20 22:53 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-19 17:02 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-18 13:46 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-17 13:45 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-17 13:14 UTCOSV refresh
- 2026-08-16 14:54 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-16 02:12 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-15 01:28 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-13 21:58 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-12 13:48 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-11 13:39 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-09 13:44 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-08 16:35 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-07 16:25 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-06 13:45 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-05 19:15 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-04 15:07 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-03 10:34 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-02 07:45 UTCOSV refresh
- 2026-08-02 02:25 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-08-01 04:13 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-30 16:26 UTCEPSS rescoreEPSS 1.3% · 67th percentile
- 2026-07-30 01:28 UTCEPSS rescoreEPSS 1.3% · 67th percentile
Publicly available exploits
(1 reference)Public exploit code is referenced for this CVE (1 GitHub PoC). Defenders should treat patch urgency accordingly.
- GitHub PoClrh2000/StackRotPublished Jun 28, 2023
CVE-2023-3269: Linux kernel privilege escalation vulnerability
Open source ↗
Related CVEs(same vendor + same CWE)
Same vendor
7 shownubuntu:USN-6249-1 · ubuntu:USN-6250-1
Frequently asked(5)
What is CVE-2023-3269?
When was CVE-2023-3269 made public?
Is CVE-2023-3269 actively exploited?
What is the CVSS score of CVE-2023-3269?
How do I remediate CVE-2023-3269?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-3269
Is Your Infrastructure Affected by CVE-2023-3269?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.