util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy mount(2) path is used without /proc, restricted non-root mount requests validate an /etc/fstab target before the mount operation re-resolves that pathname. A local low-privileged user authorized by an fstab user or users entry whose target has an attacker-writable ancestor can use renameat2(RENAME_EXCHANGE) to swap a path component and redirect an authorized mount to a root-owned location, such as mounting attacker-controlled content over /etc/sudoers.d, and thereby gain root privileges. Versions 2.41.5 and 2.42.2 pin targets for the new mount API, and 2.42.4 pins legacy targets through /proc/self/fd; the documented legacy fallback without /proc remains affected.
CVE-2026-53613
This high-severity CVE scores 7.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (2nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.0
- EG Score
- 7.0HIGHlow confidence
- EG Risk
- 32EG Risk 32/100
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)Severity70% × 45%The EG Score, 7.0 of 10.Exploitation0% × 40%No KEV listing, EG-KEV tier or EPSS when EchelonGraph scored this CVE.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
- 0.1%
- EPSS %ILE
- 2nd
- KEV
- Not listed
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
October 14, 2026
Last Modified
October 15, 2026
Advisory Details (10)
Auto-updated Oct 14, 2026commit 85d16b341f72 (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 85d16b341f72 — awaiting tagged release
https://github.com/util-linux/util-linux/commit/85d16b341f7232c9dbb4884b632e1e956584bee9commit 78a860982e03 (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 78a860982e03 — awaiting tagged release
https://github.com/util-linux/util-linux/commit/78a860982e036f38fe9c0b3344998df5ac2c2ff5commit 708d1b3c5193 (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 708d1b3c5193 — awaiting tagged release
https://github.com/util-linux/util-linux/commit/708d1b3c51932dc5ba8082c7368187715e6a8d78commit 646fb66603d1 (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 646fb66603d1 — awaiting tagged release
https://github.com/util-linux/util-linux/commit/646fb66603d10a7ac337e14f566f1af48e3107c9commit 472cc3fb2d4d (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 472cc3fb2d4d — awaiting tagged release
https://github.com/util-linux/util-linux/commit/472cc3fb2d4d47cca7aab2e0b59eb3fb8a9359eccommit 39fef62bf322 (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 39fef62bf322 — awaiting tagged release
https://github.com/util-linux/util-linux/commit/39fef62bf3226abb6bb018fa8750afa0327e84b4commit 2c773f336134 (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 2c773f336134 — awaiting tagged release
https://github.com/util-linux/util-linux/commit/2c773f336134acf016e639abb6f12ba7341fe4b8commit 0d3d55975aa3 (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 0d3d55975aa3 — awaiting tagged release
https://github.com/util-linux/util-linux/commit/0d3d55975aa3492c62fd345eac38f41cd166c0b0commit 0b010025a0e4 (util-linux/util-linux)
Fix landed in util-linux/util-linux commit 0b010025a0e4 — awaiting tagged release
https://github.com/util-linux/util-linux/commit/0b010025a0e429bc80355c94db86a843395d49e2Local Privilege Escalation via TOCTOU in mount(8) — Target Path Redirection · Advisory · util-linux/util-linux · GitHub
https://github.com/util-linux/util-linux/security/advisories/GHSA-8gj5-72r3-428gPatch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | uuid-runtime (2.37.2-4ubuntu3.6) @ jammy | 2026-10-15 | 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.
Weakness Classification(1)
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 10× in last 7d / 10× 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.
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-15 16:30 UTCEG score recompute
- 2026-10-15 16:30 UTCVendor advisory
- 2026-10-15 15:23 UTCEG score recompute
- 2026-10-15 15:23 UTCVendor advisory
- 2026-10-14 15:31 UTCEG score recompute
- 2026-10-14 15:31 UTCVendor advisory
- 2026-10-14 15:01 UTCEG score recomputeFirst assessed: 7.0 HIGH
- 2026-10-14 15:01 UTCVendor advisory
- 2026-10-14 14:59 UTCMITRE cvelistV5first tracked
Related CVEs(same vendor + same CWE)
Same vendor
4 shownubuntu:USN-8702-1
Frequently asked(5)
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Dependency Blast Radius
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