CVE-2023-53670

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

nvme-core: fix dev_pm_qos memleak

Call dev_pm_qos_hide_latency_tolerance() in the error unwind patch to

avoid following kmemleak:-

blktests (master) # kmemleak-clear; ./check nvme/044;

blktests (master) # kmemleak-scan ; kmemleak-show

nvme/044 (Test bi-directional authentication) [passed]

runtime 2.111s ... 2.124s

unreferenced object 0xffff888110c46240 (size 96):

comm "nvme", pid 33461, jiffies 4345365353 (age 75.586s)

hex dump (first 32 bytes):

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

backtrace:

[<0000000069ac2cec>] kmalloc_trace+0x25/0x90

[<000000006acc66d5>] dev_pm_qos_update_user_latency_tolerance+0x6f/0x100

[<00000000cc376ea7>] nvme_init_ctrl+0x38e/0x410 [nvme_core]

[<000000007df61b4b>] 0xffffffffc05e88b3

[<00000000d152b985>] 0xffffffffc05744cb

[<00000000f04a4041

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References