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CVE-2022-50642

UnknownEPSS 0.17%

Last modified

CVE-2022-50642 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: platform/chrome: cros_ec_typec: zero out stale pointers `cros_typec_get_switch_handles` allocates four pointers when obtaining type-c switch handles. These pointers are all freed if failing to obtain any of them; therefore, pointers in `port` become stale. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: platform/chrome: cros_ec_typec: zero out stale pointers `cros_typec_get_switch_handles` allocates four pointers when obtaining type-c switch handles. These pointers are all freed if failing to obtain any of them; therefore, pointers in `port` become stale. The stale pointers eventually cause use-after-free or double free in later code paths. Zeroing out all pointer fields after freeing to eliminate these stale pointers.

Metrics

EPSS Probability
0.17%

6.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= f28adb41dab4a2795fd959750df57adffd2bb0be, < 0ceadb5a3e45f1b81cf54bd496b40a5e50b6bd40; >= f28adb41dab4a2795fd959750df57adffd2bb0be, < b610758bb3e0674644c1255cdafc2f46b7e05ff9; >= f28adb41dab4a2795fd959750df57adffd2bb0be, < 6613f36a2fa5c69e528bccba8b3d831f759dad2f; >= f28adb41dab4a2795fd959750df57adffd2bb0be, < 9a8aadcf0b459c1257b9477fd6402e1d5952ae07
LinuxLinux5.9

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2022-50642?
In the Linux kernel, the following vulnerability has been resolved: platform/chrome: cros_ec_typec: zero out stale pointers `cros_typec_get_switch_handles` allocates four pointers when obtaining type-c switch handles. These pointers are all freed if failing to obtain any of them; therefore, pointers in `port` become stale. The stale pointers eventually cause use-after-free or double free in later code paths. Zeroing out all pointer fields after freeing to eliminate these stale pointers.
How severe is CVE-2022-50642?
Severity scoring for CVE-2022-50642 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2022-50642?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST