CVE-2022-50215 [Medium] | Security Vulnerability in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: scsi: sg: Allow waiting for commands to complete on removed device When a SCSI device is removed while in active use, currently sg will immediately return -ENODEV on any attempt to wait for active commands that were sent before the removal. This is problematic for commands that use SG_FLAG_DIRECT_IO since the data buffer may still be in use by the kernel when userspace frees or reuses it after getting ENODEV, leading to corrupted userspace memory (in the case of READ-type commands) or corrupted data being sent to the device (in the case of WRITE-type commands). This has been seen in practice when logging out of a iscsi_tcp session, where the iSCSI driver may still be processing commands after the device has been marked for removal. Change the policy to allow userspace to wait for active sg commands even when the device is being removed. Return -ENODEV only when there are no more responses to read.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-11-20	0.06%	0.01%	-0.05%
2	2025-11-18	0.04%	0.06%	+0.02%
3	2025-11-14	—	0.04%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-11-20

0.06%

0.01%

-0.05%

2025-11-18

0.04%

0.06%

+0.02%

2025-11-14

—

0.04%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.5	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	3.6	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.5

3.1

MEDIUM

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

3.6

[email protected]

OS Trackers for CVE-2022-50215

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-50215 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2022-50215
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2022-50215
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2022-50215/
`ubuntu`	medium	CVE-2022-50215 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, released 151, ignored 150, not-affected 99, needed 5, needs-triage 1.	https://ubuntu.com/security/CVE-2022-50215

Affected software / configurations for CVE-2022-50215

Vendor	Product	Version	Raw CPE
linux	linux_kernel	< 4.9.326	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.10, < 4.14.291	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.15, < 4.19.256	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 4.20, < 5.4.211	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.5, < 5.10.137	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.61	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 5.18.18	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.19, < 5.19.2	cpe:2.3:o:linux:linux_kernel::::::::

References for CVE-2022-50215

URL	Tags
https://git.kernel.org/stable/c/03d8241112d5e3cccce1a01274a221099f07d2e1	Patch
https://git.kernel.org/stable/c/3455607fd7be10b449f5135c00dc306b85dc0d21	Patch
https://git.kernel.org/stable/c/35e60ec39e862159cb92923eefd5230d4a873cb9	Patch
https://git.kernel.org/stable/c/408bfa1489a3cfe7150b81ab0b0df99b23dd5411	Patch
https://git.kernel.org/stable/c/8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8	Patch
https://git.kernel.org/stable/c/bbc118acf7baf9e93c5e1314d14f481301af4d0f	Patch
https://git.kernel.org/stable/c/ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b	Patch
https://git.kernel.org/stable/c/f135c65085eed869d10e4e7923ce1015288618da	Patch
https://git.kernel.org/stable/c/f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed	Patch

URL

CVE-2022-50215 | scsi: sg: Allow waiting for commands to complete on removed device

Exploit prediction scoring system (EPSS) score for CVE-2022-50215

Common vulnerability scoring system (CVSS) metrics for CVE-2022-50215

Weakness enumeration for CVE-2022-50215

OS Trackers for CVE-2022-50215

Affected software / configurations for CVE-2022-50215

References for CVE-2022-50215