Executive Summary



This vulnerability is currently undergoing analysis and not all information is available. Please check back soon to view the completed vulnerability summary
Informations
Name CVE-2024-57891 First vendor Publication 2025-01-15
Vendor Cve Last vendor Modification 2025-01-15

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

sched_ext: Fix invalid irq restore in scx_ops_bypass()

While adding outer irqsave/restore locking, 0e7ffff1b811 ("scx: Fix raciness in scx_ops_bypass()") forgot to convert an inner rq_unlock_irqrestore() to rq_unlock() which could re-enable IRQ prematurely leading to the following warning:

raw_local_irq_restore() called with IRQs enabled
WARNING: CPU: 1 PID: 96 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x30/0x40
...
Sched_ext: create_dsq (enabling)
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : warn_bogus_irq_restore+0x30/0x40
lr : warn_bogus_irq_restore+0x30/0x40
...
Call trace:
warn_bogus_irq_restore+0x30/0x40 (P)
warn_bogus_irq_restore+0x30/0x40 (L)
scx_ops_bypass+0x224/0x3b8
scx_ops_enable.isra.0+0x2c8/0xaa8
bpf_scx_reg+0x18/0x30
...
irq event stamp: 33739
hardirqs last enabled at (33739): [] scx_ops_bypass+0x174/0x3b8
hardirqs last disabled at (33738): [] _raw_spin_lock_irqsave+0xb4/0xd8

Drop the stray _irqrestore().

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-57891

Sources (Detail)

https://git.kernel.org/stable/c/18b2093f4598d8ee67a8153badc93f0fa7686b8a
https://git.kernel.org/stable/c/786362ce60d79967875f43e0ba55ad7a5376c133
Source Url

Alert History

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0
Date Informations
2025-01-15 17:20:30
  • First insertion