In the Linux kernel, the following vulnerability has been resolved:
genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()
irq_find_at_or_after() dereferences the interrupt descriptor which is
returned by mt_find() while neither holding sparse_irq_lock nor RCU read
lock, which means the descriptor can be freed between mt_find() and the
dereference:
CPU0 CPU1
desc = mt_find()
delayed_free_desc(desc)
irq_desc_get_irq(desc)
The use-after-free is reported by KASAN:
Call trace:
irq_get_next_irq+0x58/0x84
show_stat+0x638/0x824
seq_read_iter+0x158/0x4ec
proc_reg_read_iter+0x94/0x12c
vfs_read+0x1e0/0x2c8
Freed by task 4471:
slab_free_freelist_hook+0x174/0x1e0
__kmem_cache_free+0xa4/0x1dc
kfree+0x64/0x128
irq_kobj_release+0x28/0x3c
kobject_put+0xcc/0x1e0
delayed_free_desc+0x14/0x2c
rcu_do_batch+0x214/0x720
Guard the access with a RCU read lock section.
Metrics
Affected Vendors & Products
References
History
Wed, 11 Sep 2024 18:30:00 +0000
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ssvc
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Wed, 11 Sep 2024 13:30:00 +0000
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Tue, 03 Sep 2024 18:15:00 +0000
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First Time appeared |
Linux
Linux linux Kernel |
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CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
Vendors & Products |
Linux
Linux linux Kernel |
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-06-25T14:22:37.560Z
Updated: 2024-09-11T17:34:42.745Z
Reserved: 2024-06-24T13:54:11.033Z
Link: CVE-2024-38385
Vulnrichment
Updated: 2024-08-02T04:04:25.138Z
NVD
Status : Analyzed
Published: 2024-06-25T15:15:13.487
Modified: 2024-09-03T17:59:27.440
Link: CVE-2024-38385
Redhat