Linux: Exposure of Resource to Wrong Sphere
CVE-2024-39499 is a high-severity exposure of resource to wrong sphere vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions 58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81, 681967c4ff210e06380acf9b9a1b33ae06e77cbd, f70ff737346744633e7b655c1fb23e1578491ff3 as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.3% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Linux to 58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81 or 681967c4ff210e06380acf9b9a1b33ae06e77cbd or f70ff737346744633e7b655c1fb23e1578491ff3 or 95ac3e773a1f8da83c4710a720fbfe80055aafae, whichever matches your release line, or a later version.
- Update Linux Kernel to 4.19.317 or 5.4.279 or 5.10.221 or 5.15.162, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Linux | Linux | 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a up to, but not including, 58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81; 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a up to, but not including, 681967c4ff210e06380acf9b9a1b33ae06e77cbd; 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a up to, but not including, f70ff737346744633e7b655c1fb23e1578491ff3; 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a up to, but not including, 95ac3e773a1f8da83c4710a720fbfe80055aafae; 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a up to, but not including, 95bac1c8bedb362374ea1937b1d3e833e01174ee; 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a up to, but not including, e293c6b38ac9029d76ff0d2a6b2d74131709a9a8; 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a up to, but not including, 757804e1c599af5d2a7f864c8e8b2842406ff4bb; 1d990201f9bb499b7c76ab00abeb7e803c0bcb2a up to, but not including, 8003f00d895310d409b2bf9ef907c56b42a4e0f4; and 1 more ranges | 58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81, 681967c4ff210e06380acf9b9a1b33ae06e77cbd, f70ff737346744633e7b655c1fb23e1578491ff3, 95ac3e773a1f8da83c4710a720fbfe80055aafae, 95bac1c8bedb362374ea1937b1d3e833e01174ee, e293c6b38ac9029d76ff0d2a6b2d74131709a9a8 |
| Linux | Linux Kernel | 3.9 up to, but not including, 4.19.317; 4.20 up to, but not including, 5.4.279; 5.5 up to, but not including, 5.10.221; 5.11 up to, but not including, 5.15.162; 5.16 up to, but not including, 6.1.95; 6.2 up to, but not including, 6.6.35; 6.7 up to, but not including, 6.9.6 | 4.19.317, 5.4.279, 5.10.221, 5.15.162, 6.1.95, 6.6.35 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.
Official description
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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Exposure of Resource to Wrong Sphere
The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.
More Exposure of Resource to Wrong Sphere vulnerabilities (CWE-668)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
- git.kernel.org/stable/c/58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81
- git.kernel.org/stable/c/681967c4ff210e06380acf9b9a1b33ae06e77cbd
- git.kernel.org/stable/c/757804e1c599af5d2a7f864c8e8b2842406ff4bb
- git.kernel.org/stable/c/8003f00d895310d409b2bf9ef907c56b42a4e0f4
- git.kernel.org/stable/c/95ac3e773a1f8da83c4710a720fbfe80055aafae
- git.kernel.org/stable/c/95bac1c8bedb362374ea1937b1d3e833e01174ee
- git.kernel.org/stable/c/e293c6b38ac9029d76ff0d2a6b2d74131709a9a8
- git.kernel.org/stable/c/f70ff737346744633e7b655c1fb23e1578491ff3
Other references
Recent Exposure of Resource to Wrong Sphere vulnerabilities
- 9.3 Critical severity
- 7.1 High severity
- 7.8 High severity
- 7.1 High severity
- 7.1 High severity
- 7.9 High severity
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