| Summary: |
VUL-0: CVE-2024-38385: kernel: genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after() |
| Product: |
[Novell Products] SUSE Security Incidents
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Reporter: |
SMASH SMASH <smash_bz> |
| Component: |
Incidents | Assignee: |
Security Team bot <security-team> |
| Status: |
RESOLVED
FIXED
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QA Contact: |
Security Team bot <security-team> |
| Severity: |
Normal
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| Priority: |
P3 - Medium
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CC: |
carlos.lopez, mhocko
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| Version: |
unspecified | |
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| Target Milestone: |
--- | |
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| Hardware: |
Other | |
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| OS: |
Other | |
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| URL: |
https://smash.suse.de/issue/412086/
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| Whiteboard: |
CVSSv3.1:SUSE:CVE-2024-38385:5.5:(AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) |
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Found By:
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Security Response Team
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Services Priority:
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Business Priority:
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Blocker:
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---
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Marketing QA Status:
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IT Deployment:
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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. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-38385 https://www.cve.org/CVERecord?id=CVE-2024-38385 https://git.kernel.org/stable/c/1c7891812d85500ae2ca4051fa5683fcf29930d8 https://git.kernel.org/stable/c/b84a8aba806261d2f759ccedf4a2a6a80a5e55ba https://git.kernel.org/stable/c/d084aa022f84319f8079e30882cbcbc026af9f21 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-38385.mbox https://bugzilla.redhat.com/show_bug.cgi?id=2294280