CVE-2024-26606
binder: signal epoll threads of self-work
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Description
In the Linux kernel, the following vulnerability has been resolved: binder: signal epoll threads of self-work In (e)poll mode, threads often depend on I/O events to determine when data is ready for consumption. Within binder, a thread may initiate a command via BINDER_WRITE_READ without a read buffer and then make use of epoll_wait() or similar to consume any responses afterwards. It is then crucial that epoll threads are signaled via wakeup when they queue their own work. Otherwise, they risk waiting indefinitely for an event leaving their work unhandled. What is worse, subsequent commands won't trigger a wakeup either as the thread has pending work.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/42beab162dcee1e691ee4934292d51581c29df61
- https://git.kernel.org/stable/c/82722b453dc2f967b172603e389ee7dc1b3137cc
- https://git.kernel.org/stable/c/90e09c016d72b91e76de25f71c7b93d94cc3c769
- https://git.kernel.org/stable/c/93b372c39c40cbf179e56621e6bc48240943af69
- https://git.kernel.org/stable/c/97830f3c3088638ff90b20dfba2eb4d487bf14d7
References (11)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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