CVE-2024-53215: svcrdma: fix miss destroy percpu_counter in svc_rdma_proc_init()
First published: Fri Dec 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: svcrdma: fix miss destroy percpu_counter in svc_rdma_proc_init() There's issue as follows: RPC: Registered rdma transport module. RPC: Registered rdma backchannel transport module. RPC: Unregistered rdma transport module. RPC: Unregistered rdma backchannel transport module. BUG: unable to handle page fault for address: fffffbfff80c609a PGD 123fee067 P4D 123fee067 PUD 123fea067 PMD 10c624067 PTE 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI RIP: 0010:percpu_counter_destroy_many+0xf7/0x2a0 Call Trace: <TASK> __die+0x1f/0x70 page_fault_oops+0x2cd/0x860 spurious_kernel_fault+0x36/0x450 do_kern_addr_fault+0xca/0x100 exc_page_fault+0x128/0x150 asm_exc_page_fault+0x26/0x30 percpu_counter_destroy_many+0xf7/0x2a0 mmdrop+0x209/0x350 finish_task_switch.isra.0+0x481/0x840 schedule_tail+0xe/0xd0 ret_from_fork+0x23/0x80 ret_from_fork_asm+0x1a/0x30 </TASK> If register_sysctl() return NULL, then svc_rdma_proc_cleanup() will not destroy the percpu counters which init in svc_rdma_proc_init(). If CONFIG_HOTPLUG_CPU is enabled, residual nodes may be in the 'percpu_counters' list. The above issue may occur once the module is removed. If the CONFIG_HOTPLUG_CPU configuration is not enabled, memory leakage occurs. To solve above issue just destroy all percpu counters when register_sysctl() return NULL.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.12<5.15.174 | |
| Linux Kernel | >=5.16<6.1.120 | |
| Linux Kernel | >=6.2<6.6.64 | |
| Linux Kernel | >=6.7<6.11.11 | |
| Linux Kernel | >=6.12<6.12.2 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.22-1 | |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/a12c897adf40b6e2b4a56e6912380c31bd7b2479
- https://git.kernel.org/stable/c/94d2d6d398706ab7218a26d61e12919c4b498e09
- https://git.kernel.org/stable/c/1c9a99c89e45b22eb556fd2f3f729f2683f247d5
- https://git.kernel.org/stable/c/ebf47215d46992caea660ec01cd618005d9e687a
- https://git.kernel.org/stable/c/20322edcbad82a60321a8615a99ca73a9611115f
- https://git.kernel.org/stable/c/ce89e742a4c12b20f09a43fec1b21db33f2166cd
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53215
- https://nvd.nist.gov/vuln/detail/CVE-2024-53215
- https://launchpad.net/bugs/cve/CVE-2024-53215
- https://security-tracker.debian.org/tracker/CVE-2024-53215
- https://ubuntu.com/security/CVE-2024-53215
- https://git.kernel.org/linus/ce89e742a4c12b20f09a43fec1b21db33f2166cd
Frequently Asked Questions
What is the severity of CVE-2024-53215?
CVE-2024-53215 has a moderate severity rating due to its potential impact on the stability of the Linux kernel in affected versions.
What systems are affected by CVE-2024-53215?
CVE-2024-53215 affects various versions of the Linux kernel between 5.12 and 6.12, including multiple subversions.
How do I fix CVE-2024-53215?
To fix CVE-2024-53215, upgrade the Linux kernel to a version that is not vulnerable, as indicated in the advisory.
What is the nature of the vulnerability in CVE-2024-53215?
CVE-2024-53215 involves a missed destruction of the percpu_counter in the svc_rdma_proc_init() function within the Linux kernel.
Is there a workaround for CVE-2024-53215?
There is no official workaround for CVE-2024-53215; upgrading to a patched kernel version is recommended.
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