CVE-2024-40977
wifi: mt76: mt7921s: fix potential hung tasks during chip recovery
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7921s: fix potential hung tasks during chip recovery
During chip recovery (e.g. chip reset), there is a possible situation that
kernel worker reset_work is holding the lock and waiting for kernel thread
stat_worker to be parked, while stat_worker is waiting for the release of
the same lock.
It causes a deadlock resulting in the dumping of hung tasks messages and
possible rebooting of the device.
This patch prevents the execution of stat_worker during the chip recovery.
A vulnerability was found in the Linux kernel's mt76 driver for the mt7921s chip, where a potential deadlock could occur during chip recovery. This situation arises when the kernel worker reset_work holds a lock while waiting for the stat_worker thread, which is simultaneously waiting for the same lock to be released, which leads to hung tasks and may even result in device reboots.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-07-12 CVE Reserved
- 2024-07-12 CVE Published
- 2024-09-10 EPSS Updated
- 2024-11-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-833: Deadlock
CAPEC
References (6)
URL | Tag | Source |
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URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2024-40977 | 2024-10-30 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2297561 | 2024-10-30 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.1.96 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.96" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.6.36 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.36" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.9.7 Search vendor "Linux" for product "Linux Kernel" and version " < 6.9.7" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.10 Search vendor "Linux" for product "Linux Kernel" and version " < 6.10" | en |
Affected
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