Medium

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

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.

Published Jun 18, 2025 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+2
Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.25%

ahead of 15% of scored CVEs · Oct 15, 2026

Affects

Linux

Linux and 1 more

CVSS base

5.5

Medium · 4 source(s)

Prioritization reference: 7.8 provisional

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux, Linux Linux Kernel).
Apply the fixed version or the patch documented under Remediation.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < f135c65085eed869d10e4e7923ce1015288618daversion 2.6.30≥ 2.6.29.2 and < 2.6.30≥ 2.6.28.10 and < 2.6.29version b21c6d2897cd455fa396f4041a0c8165784e949fversion a0fe972f78eaaf352d593f9ed9079de590ceb286≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < 3455607fd7be10b449f5135c00dc306b85dc0d21≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < 03d8241112d5e3cccce1a01274a221099f07d2e1 and 6 more ≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < 35e60ec39e862159cb92923eefd5230d4a873cb9≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < 8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < 408bfa1489a3cfe7150b81ab0b0df99b23dd5411≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed≥ c6517b7942fad663cc1cf3235cbe4207cf769332 and < bbc118acf7baf9e93c5e1314d14f481301af4d0f	Vulnerable	CVE Program (cve.org) e CISA ADP
Linux	Linux Kernel	< 4.9.326≥ 5.19 and < 5.19.2≥ 5.16 and < 5.18.18≥ 5.11 and < 5.15.61≥ 5.5 and < 5.10.137≥ 4.20 and < 5.4.211≥ 4.15 and < 4.19.256≥ 4.10 and < 4.14.291	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.8	CVSS 3.1	High	1.8	5.9	416baaa9-dc9f-4396-8d5f-8c081fb06d67 via NIST National Vulnerability Database
7.8	CVSS 3.1	High	—	—	Linux via CVE Program (cve.org) e CISA ADP
5.5	CVSS 3.1	Medium	1.8	3.6	nvd@nist.gov via NIST National Vulnerability Database
5.5	CVSS 3.1	Medium	—	—	GitHub, Inc. via GitHub Security Advisories

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (score shown at the top: nvd@nist.gov)

Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 7.8 (416baaa9-dc9f-4396-8d5f-8c081fb06d67 via NIST National Vulnerability Database) as a conservative provisional reference — not a definitive official score.

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
Fix documented
Oct 15, 2026 · NIST National Vulnerability Database
Affected products added · linux/linux kernel
Oct 15, 2026 · NIST National Vulnerability Database
CVSS changed · 5.5
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Modified
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · Alertas do Telegram
2025
CVE published
Jun 18, 2025 · Linux

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 15, 2026 – Oct 15, 2026
1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

11 on the record

git.kernel.org/stable/c/bbc118acf7baf9e93c5e1314d14f481301af4d0f
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/8c004b7dbb340c1e5889f5fb9e5baa6f6e5303e8
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/3455607fd7be10b449f5135c00dc306b85dc0d21
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/03d8241112d5e3cccce1a01274a221099f07d2e1
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/f5e61d9b4a699dd16f32d5f39eb1cf98d84c92ed
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/35e60ec39e862159cb92923eefd5230d4a873cb9
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/f135c65085eed869d10e4e7923ce1015288618da
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/ed9afd967cbfe7da2dc0d5e52c62a778dfe9f16b
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/408bfa1489a3cfe7150b81ab0b0df99b23dd5411
Patch, NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2022-50215
GitHub Security Advisories
github.com/advisories/GHSA-5vwg-5h67-mq2j
GitHub Security Advisories

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 13h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 13h
Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2022-50215 is "scsi: sg: Allow waiting for commands to complete on removed device", rated Medium. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 5.5 describes technical severity. EPSS 0.25% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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