CVE-2022-48745: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Use del_timer_sync in fw reset flow of halting poll Substitute del_timer() with del_timer_sync() in fw reset polling deactivation flow, in order to prevent a race condition which occurs when del_timer() is called and timer is deactivated while another process is handling the timer interrupt. A situation that led to the following call trace: RIP: 0010:run_timer_softirq+0x137/0x420 <IRQ> recalibrate_cpu_khz+0x10/0x10 ktime_get+0x3e/0xa0 ? sched_clock_cpu+0xb/0xc0 __do_softirq+0xf5/0x2ea irq_exit_rcu+0xc1/0xf0 sysvec_apic_timer_interrupt+0x9e/0xc0 asm_sysvec_apic_timer_interrupt+0x12/0x20 </IRQ>

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CVSS v3.1 Score

4.7

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.10 — 5.10.97
linux	linux_kernel	5.11 — 5.15.20
linux	linux_kernel	5.16 — 5.16.6
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/2a038dd1d942f8fbc495c58fa592ff24af05f1c2 https://git.kernel.org/stable/c/3c5193a87b0fea090aa3f769d020337662d87b5e https://git.kernel.org/stable/c/502c37b033fab7cde3e95a570af4f073306be45e https://git.kernel.org/stable/c/f895ebeb44d09d02674cfdd0cfc2bf687603918c https://git.kernel.org/stable/c/2a038dd1d942f8fbc495c58fa592ff24af05f1c2 https://git.kernel.org/stable/c/3c5193a87b0fea090aa3f769d020337662d87b5e https://git.kernel.org/stable/c/502c37b033fab7cde3e95a570af4f073306be45e https://git.kernel.org/stable/c/f895ebeb44d09d02674cfdd0cfc2bf687603918c

Frequently Asked Questions

What is CVE-2022-48745? +

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Use del_timer_sync in fw reset flow of halting poll Substitute del_timer() with del_timer_sync() in fw reset polling deactivation flow, in order to prevent a race condition which occurs when del_timer() is called and timer is deactivated while another process is handling the timer interrupt. A situation that led to the following call trace: RIP: 0010:run_timer_softirq+0x137/0x420 <IRQ> recalibrate_cpu_khz+0x10/0x10 ktime_get+0x3e/0xa0 ? sched_clock_cpu+0xb/0xc0 __do_softirq+0xf5/0x2ea irq_exit_rcu+0xc1/0xf0 sysvec_apic_timer_interrupt+0x9e/0xc0 asm_sysvec_apic_timer_interrupt+0x12/0x20 </IRQ> It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2022-48745? +

CVE-2022-48745 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-48745? +

CVE-2022-48745 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-48745? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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