CVE-2024-39499
vmci: prevent speculation leaks by sanitizing event in event_deliver()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.9
References 8
git.kernel.org
- stable/c/58730dfbd4ae01c1b022b0d234a8bf8c02cdfb81
- stable/c/681967c4ff210e06380acf9b9a1b33ae06e77cbd
- stable/c/f70ff737346744633e7b655c1fb23e1578491ff3
- stable/c/95ac3e773a1f8da83c4710a720fbfe80055aafae
- stable/c/95bac1c8bedb362374ea1937b1d3e833e01174ee
- stable/c/e293c6b38ac9029d76ff0d2a6b2d74131709a9a8
- stable/c/757804e1c599af5d2a7f864c8e8b2842406ff4bb
- stable/c/8003f00d895310d409b2bf9ef907c56b42a4e0f4