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CVE-2024-35989 Affecting kernel-64k-debug-modules-extra package, versions <0:5.14.0-427.40.1.el9_4

Severity

 Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-ALMALINUX9-KERNEL64KDEBUGMODULESEXTRA-8305088
  • published25 Oct 2024
  • disclosed16 Oct 2024
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Introduced: 16 Oct 2024

CVE-2024-35989  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 kernel-64k-debug-modules-extra to version 0:5.14.0-427.40.1.el9_4 or higher.
This issue was patched in ALSA-2024:8162.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-debug-modules-extra package and not the kernel-64k-debug-modules-extra package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

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

dmaengine: idxd: Fix oops during rmmod on single-CPU platforms

During the removal of the idxd driver, registered offline callback is invoked as part of the clean up process. However, on systems with only one CPU online, no valid target is available to migrate the perf context, resulting in a kernel oops:

BUG: unable to handle page fault for address: 000000000002a2b8
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 1470e1067 P4D 0
Oops: 0002 [#1] PREEMPT SMP NOPTI
CPU: 0 PID: 20 Comm: cpuhp/0 Not tainted 6.8.0-rc6-dsa+ #57
Hardware name: Intel Corporation AvenueCity/AvenueCity, BIOS BHSDCRB1.86B.2492.D03.2307181620 07/18/2023
RIP: 0010:mutex_lock+0x2e/0x50
...
Call Trace:
&lt;TASK&gt;
__die+0x24/0x70
page_fault_oops+0x82/0x160
do_user_addr_fault+0x65/0x6b0
__pfx___rdmsr_safe_on_cpu+0x10/0x10
exc_page_fault+0x7d/0x170
asm_exc_page_fault+0x26/0x30
mutex_lock+0x2e/0x50
mutex_lock+0x1e/0x50
perf_pmu_migrate_context+0x87/0x1f0
perf_event_cpu_offline+0x76/0x90 [idxd]
cpuhp_invoke_callback+0xa2/0x4f0
__pfx_perf_event_cpu_offline+0x10/0x10 [idxd]
cpuhp_thread_fun+0x98/0x150
smpboot_thread_fn+0x27/0x260
smpboot_thread_fn+0x1af/0x260
__pfx_smpboot_thread_fn+0x10/0x10
kthread+0x103/0x140
__pfx_kthread+0x10/0x10
ret_from_fork+0x31/0x50
__pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1b/0x30
&lt;TASK&gt;

Fix the issue by preventing the migration of the perf context to an invalid target.

CVSS Scores

version 3.1