CVE-2024-38555: net/mlx5: Discard command completions in internal error
First published: Wed Jun 19 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Discard command completions in internal error Fix use after free when FW completion arrives while device is in internal error state. Avoid calling completion handler in this case, since the device will flush the command interface and trigger all completions manually. Kernel log: ------------[ cut here ]------------ refcount_t: underflow; use-after-free. ... RIP: 0010:refcount_warn_saturate+0xd8/0xe0 ... Call Trace: <IRQ> ? __warn+0x79/0x120 ? refcount_warn_saturate+0xd8/0xe0 ? report_bug+0x17c/0x190 ? handle_bug+0x3c/0x60 ? exc_invalid_op+0x14/0x70 ? asm_exc_invalid_op+0x16/0x20 ? refcount_warn_saturate+0xd8/0xe0 cmd_ent_put+0x13b/0x160 [mlx5_core] mlx5_cmd_comp_handler+0x5f9/0x670 [mlx5_core] cmd_comp_notifier+0x1f/0x30 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 mlx5_eq_async_int+0xf6/0x290 [mlx5_core] notifier_call_chain+0x35/0xb0 atomic_notifier_call_chain+0x16/0x20 irq_int_handler+0x19/0x30 [mlx5_core] __handle_irq_event_percpu+0x4b/0x160 handle_irq_event+0x2e/0x80 handle_edge_irq+0x98/0x230 __common_interrupt+0x3b/0xa0 common_interrupt+0x7b/0xa0 </IRQ> <TASK> asm_common_interrupt+0x22/0x40
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.10.219 | 5.10.219 |
| redhat/kernel | <5.15.161 | 5.15.161 |
| redhat/kernel | <6.1.93 | 6.1.93 |
| redhat/kernel | <6.6.33 | 6.6.33 |
| redhat/kernel | <6.8.12 | 6.8.12 |
| redhat/kernel | <6.9.3 | 6.9.3 |
| redhat/kernel | <6.10 | 6.10 |
| Linux Kernel | >=5.10.20<5.10.219 | |
| Linux Kernel | >=5.12<5.15.161 | |
| Linux Kernel | >=5.16<6.1.93 | |
| Linux Kernel | >=6.2<6.6.33 | |
| Linux Kernel | >=6.7<6.8.12 | |
| Linux Kernel | >=6.9<6.9.3 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.21-1 6.12.22-1 |
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Reference Links
- https://git.kernel.org/stable/c/1337ec94bc5a9eed250e33f5f5c89a28a6bfabdb
- https://git.kernel.org/stable/c/1d5dce5e92a70274de67a59e1e674c3267f94cd7
- https://git.kernel.org/stable/c/3cb92b0ad73d3f1734e812054e698d655e9581b0
- https://git.kernel.org/stable/c/7ac4c69c34240c6de820492c0a28a0bd1494265a
- https://git.kernel.org/stable/c/bf8aaf0ae01c27ae3c06aa8610caf91e50393396
- https://git.kernel.org/stable/c/db9b31aa9bc56ff0d15b78f7e827d61c4a096e40
- https://git.kernel.org/stable/c/f6fbb8535e990f844371086ab2c1221f71f993d3
- https://launchpad.net/bugs/cve/CVE-2024-38555
- https://access.redhat.com/security/cve/CVE-2024-38555
- https://lore.kernel.org/linux-cve-announce/2024061952-CVE-2024-38555-aefb@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:5065
- https://access.redhat.com/errata/RHSA-2024:5102
- https://access.redhat.com/errata/RHSA-2024:5101
- https://access.redhat.com/errata/RHSA-2024:5255
- https://access.redhat.com/errata/RHSA-2024:5365
- https://access.redhat.com/errata/RHSA-2024:5364
- https://access.redhat.com/errata/RHSA-2024:9315
- https://access.redhat.com/errata/RHSA-2024:10771
- https://bugzilla.redhat.com/show_bug.cgi?id=2293444
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-38555
- https://nvd.nist.gov/vuln/detail/CVE-2024-38555
- https://security-tracker.debian.org/tracker/CVE-2024-38555
- https://ubuntu.com/security/CVE-2024-38555
- https://git.kernel.org/linus/db9b31aa9bc56ff0d15b78f7e827d61c4a096e40
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-38555?
CVE-2024-38555 is classified with a severity level that indicates a significant risk due to a use after free issue in the Linux kernel.
How do I fix CVE-2024-38555?
To fix CVE-2024-38555, update the kernel to versions 5.10.219, 5.15.161, 6.1.93, or later versions as specified by your distribution.
Which Linux kernel versions are affected by CVE-2024-38555?
CVE-2024-38555 affects various kernel versions prior to 5.10.219, 5.15.161, 6.1.93, and other specific versions from different vendor releases.
What is the nature of the vulnerability described in CVE-2024-38555?
The vulnerability in CVE-2024-38555 involves a use after free condition triggered by command completions arriving while the device is in an internal error state.
Is there an exploit for CVE-2024-38555?
While no specific exploits have been publicly disclosed for CVE-2024-38555, the nature of the vulnerability poses a risk that could potentially be exploited.
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