CVE-2024-46784: net: mana: Fix error handling in mana_create_txq/rxq's NAPI cleanup
First published: Wed Sep 18 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix error handling in mana_create_txq/rxq's NAPI cleanup Currently napi_disable() gets called during rxq and txq cleanup, even before napi is enabled and hrtimer is initialized. It causes kernel panic. ? page_fault_oops+0x136/0x2b0 ? page_counter_cancel+0x2e/0x80 ? do_user_addr_fault+0x2f2/0x640 ? refill_obj_stock+0xc4/0x110 ? exc_page_fault+0x71/0x160 ? asm_exc_page_fault+0x27/0x30 ? __mmdrop+0x10/0x180 ? __mmdrop+0xec/0x180 ? hrtimer_active+0xd/0x50 hrtimer_try_to_cancel+0x2c/0xf0 hrtimer_cancel+0x15/0x30 napi_disable+0x65/0x90 mana_destroy_rxq+0x4c/0x2f0 mana_create_rxq.isra.0+0x56c/0x6d0 ? mana_uncfg_vport+0x50/0x50 mana_alloc_queues+0x21b/0x320 ? skb_dequeue+0x5f/0x80
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.15<6.1.110 | |
| Linux Kernel | >=6.2<6.6.51 | |
| Linux Kernel | >=6.7<6.10.10 | |
| Linux Kernel | =6.11-rc1 | |
| Linux Kernel | =6.11-rc2 | |
| Linux Kernel | =6.11-rc3 | |
| Linux Kernel | =6.11-rc4 | |
| Linux Kernel | =6.11-rc5 | |
| Linux Kernel | =6.11-rc6 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 | |
| debian/linux-6.1 | 6.1.128-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/4982a47154f0b50de81ee0a0b169a3fc74120a65
- https://git.kernel.org/stable/c/9178eb8ebcd887ab75e54ac40d538e54bb9c7788
- https://git.kernel.org/stable/c/9e0bff4900b5d412a9bafe4baeaa6facd34f671c
- https://git.kernel.org/stable/c/b6ecc662037694488bfff7c9fd21c405df8411f2
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46784
- https://nvd.nist.gov/vuln/detail/CVE-2024-46784
- https://launchpad.net/bugs/cve/CVE-2024-46784
- https://security-tracker.debian.org/tracker/CVE-2024-46784
- https://ubuntu.com/security/CVE-2024-46784
- https://git.kernel.org/linus/b6ecc662037694488bfff7c9fd21c405df8411f2
Frequently Asked Questions
What is the severity of CVE-2024-46784?
CVE-2024-46784 is classified as high severity due to the potential for kernel panic resulting from improper error handling in NAPI cleanup.
How do I fix CVE-2024-46784?
To resolve CVE-2024-46784, upgrade to the patched versions of the Linux Kernel: 5.10.223-1, 6.1.119-1~deb11u1, or later versions.
Which versions of the Linux kernel are affected by CVE-2024-46784?
CVE-2024-46784 affects Linux Kernel versions from 5.15 to 6.1.110 and versions 6.2 to 6.6.51, and 6.7 to 6.10.10.
What causes the kernel panic associated with CVE-2024-46784?
The kernel panic is triggered because napi_disable() is called during the cleanup of rxq and txq before napi is enabled and hrtimer is initialized.
What is the context of the CVE-2024-46784 vulnerability?
CVE-2024-46784 pertains to error handling issues in the Linux kernel's network driver framework, specifically within the mana driver.
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