CVE-2023-53322: linux kernel Use-After-Free — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Wait for io return on terminate rport System crash due to use after free. Current code allows terminate_rport_io to exit before making sure all IOs has returned. For FCP-2 device, IO's can hang on in HW because driver has not tear down the session in FW at first sign of cable pull. When dev_loss_tmo timer pops, terminate_rport_io is called and upper layer is about to free various resources. Terminate_rport_io trigger qla to do the final cleanup, but the cleanup might not be fast enough where it leave qla still holding on to the same resource. Wait for IO's to return to upper layer before resources are freed.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 4.14.322
linux	linux_kernel	4.15 — 4.19.291
linux	linux_kernel	4.20 — 5.4.251
linux	linux_kernel	5.5 — 5.10.188
linux	linux_kernel	5.11 — 5.15.121
linux	linux_kernel	5.16 — 6.1.40
linux	linux_kernel	6.2 — 6.4.5

References

Advisories & Patches

https://git.kernel.org/stable/c/079c8264ed9fea8cbcac01ad29040f901cbc3692 https://git.kernel.org/stable/c/4647d2e88918a078359d1532d90c417a38542c9e https://git.kernel.org/stable/c/5bcdaafd92be6035ddc77fa76650cf9dd5b864c4 https://git.kernel.org/stable/c/8a55556cd7e0220486163b1285ce11a8be2ce5fa https://git.kernel.org/stable/c/90770dad1eb30967ebd8d37d82830bcf270b3293 https://git.kernel.org/stable/c/a9fe97fb7b4ee21bffb76f2acb05769bad27ae70 https://git.kernel.org/stable/c/d25fded78d88e1515439b3ba581684d683e0b6ab https://git.kernel.org/stable/c/fc0cba0c7be8261a1625098bd1d695077ec621c9

Frequently Asked Questions

What is CVE-2023-53322? +

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Wait for io return on terminate rport System crash due to use after free. Current code allows terminate_rport_io to exit before making sure all IOs has returned. For FCP-2 device, IO's can hang on in HW because driver has not tear down the session in FW at first sign of cable pull. When dev_loss_tmo timer pops, terminate_rport_io is called and upper layer is about to free various resources. Terminate_rport_io trigger qla to do the final cleanup, but the cleanup might not be fast enough where it leave qla still holding on to the same resource. Wait for IO's to return to upper layer before resources are freed. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53322? +

CVE-2023-53322 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-53322? +

CVE-2023-53322 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-2023-53322? +

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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