vmci: prevent speculation leaks by sanitizing event in event_deliver()
Priority LOW 31CWE-668Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Partial Red Hat: 16 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: vmci: prevent speculation leaks by sanitizing event in event_deliver() Coverity spotted that event_msg is controlled by user-space, event_msg->event_data.event is passed to event_deliver() and used as an index without sanitization. This change ensures that the event index is sanitized to mitigate any possibility of speculative information leaks. This bug was discovered and resolved using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc. Only compile tested, no access to HW.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00296 22nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.317, 5.4.279, 5.10.221 +5Red Hat: 4 advisoriesRed Hat: 16 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 3.9 and later | 4.19.317, 5.4.279, 5.10.221, 5.15.162, 6.1.95, 6.6.35, 6.9.6, 6.10 | Patch available | CNA |
- Linux VendorLinux Affected 3.9 and later Fixed in 4.19.317, 5.4.279, 5.10.221, 5.15.162, 6.1.95, 6.6.35, 6.9.6, 6.10 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.9 to before 4.19.317; 4.20 to before 5.4.279; 5.5 to before 5.10.221; 5.11 to before 5.15.162; 5.16 to before 6.1.95; 6.2 to before 6.6.35; 6.7 to before 6.9.6 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.9 to before 4.19.317; 4.20 to before 5.4.279; 5.5 to before 5.10.221; 5.11 to before 5.15.162; 5.16 to before 6.1.95; 6.2 to before 6.6.35; 6.7 to before 6.9.6 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.317, 5.4.279, 5.10.221, 5.15.162, 6.1.95, 6.6.35, 6.9.6, 6.10
Red Hat 4 advisories
- RHSA-2024:11313 Released 2024-12-18 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.49.1.el9_4, libperf-5.14.0-427.49.1.el9_4
- Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.49.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.49.1.el9_4, kernel-64k-devel-5.14.0-427.49.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.49.1.el9_4, kernel-5.14.0-427.49.1.el9_4, kernel-64k-5.14.0-427.49.1.el9_4 +29
- Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.49.1.el9_4, kernel-rt-core-5.14.0-427.49.1.el9_4, kernel-rt-debug-5.14.0-427.49.1.el9_4 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.49.1.el9_4, kernel-rt-core-5.14.0-427.49.1.el9_4, kernel-rt-debug-5.14.0-427.49.1.el9_4 +11
- RHSA-2024:9315 Released 2024-11-12 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-cross-headers-5.14.0-503.11.1.el9_5, kernel-tools-libs-devel-5.14.0-503.11.1.el9_5, libperf-5.14.0-503.11.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.11.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.11.1.el9_5, kernel-64k-devel-5.14.0-503.11.1.el9_5 +12
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.11.1.el9_5, kernel-5.14.0-503.11.1.el9_5, kernel-64k-5.14.0-503.11.1.el9_5 +30
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +11
- RHSA-2024:7000 Released 2024-09-24 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.22.1.el8_10, kernel-4.18.0-553.22.1.el8_10, kernel-abi-stablelists-4.18.0-553.22.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.22.1.el8_10
Show 1 more Red Hat advisories
- RHSA-2024:7001 Released 2024-09-24 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-core-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-debug-4.18.0-553.22.1.rt7.363.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-core-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-debug-4.18.0-553.22.1.rt7.363.el8_10 +7
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix planned: Will not fix |
| RHOAI-2.13-RHEL-8 | Fixed | — |
| RHOAI-2.14-RHEL-8 | Fixed | — |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2024:11313 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2024:11313 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:7000 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2024:11313 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:7000 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:7001 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:7001 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux Real Time EUS (v.9.4) | Fixed | RHSA-2024:11313 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) | Fixed | RHSA-2024:11313 |
Not affected: 3 products
- Red Hat CodeReady Linux Builder (v. 9)
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux AppStream (v. 9)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-39499
- 2026-10-03 Alias added: GHSA-pq55-ghfc-4495
- 2026-10-29 Affected versions changed · Red Hat
- 2026-10-30 Fix available: RHOAI-2.13-RHEL-8, RHOAI-2.14-RHEL-8 · Red Hat
References
Patch 8
- https://git.kernel.org/stable/c/58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81
- https://git.kernel.org/stable/c/681967c4ff210e06380acf9b9a1b33ae06e77cbd
- https://git.kernel.org/stable/c/f70ff737346744633e7b655c1fb23e1578491ff3
- https://git.kernel.org/stable/c/95ac3e773a1f8da83c4710a720fbfe80055aafae
- https://git.kernel.org/stable/c/95bac1c8bedb362374ea1937b1d3e833e01174ee
- https://git.kernel.org/stable/c/e293c6b38ac9029d76ff0d2a6b2d74131709a9a8
- https://git.kernel.org/stable/c/757804e1c599af5d2a7f864c8e8b2842406ff4bb
- https://git.kernel.org/stable/c/8003f00d895310d409b2bf9ef907c56b42a4e0f4
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Sources
- CVE-2024-39499 · CVE Program
- CVE-2024-39499 · NVD
- FIRST EPSS
- GHSA-pq55-ghfc-4495 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-39499 · Red Hat security data · CC BY 4.0
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