CVE-2024-43862 (GCVE-0-2024-43862)

Vulnerability from cvelistv5 – Published: 2024-08-20 23:45 – Updated: 2026-05-11 20:31
VLAI
Title
net: wan: fsl_qmc_hdlc: Convert carrier_lock spinlock to a mutex
Summary
In the Linux kernel, the following vulnerability has been resolved: net: wan: fsl_qmc_hdlc: Convert carrier_lock spinlock to a mutex The carrier_lock spinlock protects the carrier detection. While it is held, framer_get_status() is called which in turn takes a mutex. This is not correct and can lead to a deadlock. A run with PROVE_LOCKING enabled detected the issue: [ BUG: Invalid wait context ] ... c204ddbc (&framer->mutex){+.+.}-{3:3}, at: framer_get_status+0x40/0x78 other info that might help us debug this: context-{4:4} 2 locks held by ifconfig/146: #0: c0926a38 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x12c/0x664 #1: c2006a40 (&qmc_hdlc->carrier_lock){....}-{2:2}, at: qmc_hdlc_framer_set_carrier+0x30/0x98 Avoid the spinlock usage and convert carrier_lock to a mutex.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:06 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 54762918ca856028d33d1d56d017a4d7706c6196 , < f223d2b4acb7a45a6e0581cb380e1af1a6dc7ab9 (git)
Affected: 54762918ca856028d33d1d56d017a4d7706c6196 , < c4d6a347ba7babdf9d90a0eb24048c266cae0532 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.10.4 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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