PT-2024-26811 · Linux+6 · Linux Kernel+6
Marek Vasut
·
Published
2024-04-08
·
Updated
2026-05-26
·
CVE-2024-35971
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A vulnerability in the Linux kernel has been resolved, which was causing a system hang. The issue occurred when the
ks8851 irq() thread called ks8851 rx pkts() and subsequently netif rx(), leading to a deadlock situation. The local bh enable() function may call do softirq() to run softirqs, one of which is net rx action, ultimately reaching the driver's .start xmit callback and causing the system to hang. The hang happens because ks8851 irq() first locks a spinlock in ks8851 par.c and then calls netif rx(), which attempts to claim the already locked spinlock again. To fix this, the do softirq() call is moved outside of the spinlock protected section of ks8851 irq() by disabling BHs around the entire spinlock protected section, allowing do softirq() to trigger without the spinlock being held.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Improper Locking
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu