Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 721255b9826bd11c7a38b585905fc2dd0fb94e52 before 1c7891812d85500ae2ca4051fa5683fcf29930d8; affected 721255b9826bd11c7a38b585905fc2dd0fb94e52 before d084aa022f84319f8079e30882cbcbc026af9f21; affected 721255b9826bd11c7a38b585905fc2dd0fb94e52 before b84a8aba806261d2f759ccedf4a2a6a80a5e55ba |
| Linux / Linux | affected 6.5; unaffected 0 before 6.5; unaffected 6.6.34 through 6.6.*; unaffected 6.9.5 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/1c7891812d85500ae2ca4051fa5683fcf29930d8
- https://git.kernel.org/stable/c/d084aa022f84319f8079e30882cbcbc026af9f21
- https://git.kernel.org/stable/c/b84a8aba806261d2f759ccedf4a2a6a80a5e55ba
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.