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CVE-2022-50350

Linux Kernel race condition

9.8 CRITICALEPSS 0.27%
  1. Published16 Sept 2025

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix a race condition between login_work and the login thread In case a malicious initiator sends some random data immediately after a login PDU; the iscsi_target_sk_data_ready() callback will schedule the login_work and, at the same time, the negotiation may end without clearing the LOGIN_FLAGS_INITIAL_PDU flag (because no additional PDU exchanges are required to complete the login). The login has been completed but the login_work function will find the LOGIN_FLAGS_INITIAL_PDU flag set and will never stop from rescheduling itself; at this point, if the initiator drops the connection, the iscsit_conn structure will be freed, login_work will dereference a released socket structure and the kernel crashes. BUG: kernel NULL pointer dereference, address: 0000000000000230 PF: supervisor write access in kernel mode PF: error_code(0x0002) - not-present page Workqueue: events iscsi_target_do_login_rx [iscsi_target_mod] RIP: 0010:_raw_read_lock_bh+0x15/0x30 Call trace: iscsi_target_do_login_rx+0x75/0x3f0 [iscsi_target_mod] process_one_work+0x1e8/0x3c0 Fix this bug by forcing login_work to stop after the login has been completed and the socket callbacks have been restored. Add a comment to clearify the return values of iscsi_target_do_login()

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux Kernel≥ 3.12 < 6.0.16 · ≥ 6.1 < 6.1.2

Remediation

Fixed in
Linux Kernel≥ 6.0.16

References

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Frequently asked

Is CVE-2022-50350 being actively exploited?

CVE-2022-50350 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.27%.

How severe is CVE-2022-50350?

CVE-2022-50350 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.27% probability of exploitation.

Which products are affected by CVE-2022-50350?

Affected products include Linux Kernel.

How do I fix CVE-2022-50350?

Upgrade affected software to a fixed version, for example Linux Kernel 6.0.16 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.