CVE-2024-43862
net: wan: fsl_qmc_hdlc: Convert carrier_lock spinlock to a mutex
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-08-17 CVE Reserved
- 2024-08-20 CVE Published
- 2024-08-21 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (3)
URL | Tag | Source |
---|---|---|
https://git.kernel.org/stable/c/54762918ca856028d33d1d56d017a4d7706c6196 | Vuln. Introduced |
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://git.kernel.org/stable/c/f223d2b4acb7a45a6e0581cb380e1af1a6dc7ab9 | 2024-08-11 | |
https://git.kernel.org/stable/c/c4d6a347ba7babdf9d90a0eb24048c266cae0532 | 2024-08-01 |
URL | Date | SRC |
---|
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" | >= 6.9 < 6.10.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.9 < 6.10.4" | en |
Affected
| ||||||
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.9 < 6.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.9 < 6.11" | en |
Affected
|