PT-2024-7826 · Linux+5 · Linux Kernel+5
Finn Thain
·
Published
2024-04-09
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Updated
2025-03-28
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CVE-2024-26999
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
The issue is related to the serial/pmac zilog component of the Linux kernel, where a flawed mitigation for rx irq flood can cause a crash when using pmac zilog as a serial console. This occurs because the
pr err() call in pmz receive chars() results in pmz console write() attempting to lock a spinlock already locked in pmz interrupt(). With CONFIG DEBUG SPINLOCK=y, this produces a fatal BUG splat. The spinlock in question is the one in struct uart port. Even when it's not fatal, the serial port rx function ceases to work.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu