scsi: core: Fix refcount leak for tagset_refcnt
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix refcount leak for tagset_refcnt This leak will cause a hang when tearing down the SCSI host. For example, iscsid hangs with the following call trace: [130120.652718] scsi_alloc_sdev: Allocation failure during SCSI scanning, some SCSI devices might not be configured PID: 2528 TASK: ffff9d0408974e00 CPU: 3 COMMAND: "iscsid" #0 [ffffb5b9c134b9e0] __schedule at ffffffff860657d4 #1 [ffffb5b9c134ba28] schedule at ffffffff86065c6f #2 [ffffb5b9c134ba40] schedule_timeout at ffffffff86069fb0 #3 [ffffb5b9c134bab0] __wait_for_common at ffffffff8606674f #4 [ffffb5b9c134bb10] scsi_remove_host at ffffffff85bfe84b #5 [ffffb5b9c134bb30] iscsi_sw_tcp_session_destroy at ffffffffc03031c4 [iscsi_tcp] #6 [ffffb5b9c134bb48] iscsi_if_recv_msg at ffffffffc0292692 [scsi_transport_iscsi] #7 [ffffb5b9c134bb98] iscsi_if_rx at ffffffffc02929c2 [scsi_transport_iscsi] #8 [ffffb5b9c134bbf0] netlink_unicast at ffffffff85e551d6 #9 [ffffb5b9c134bc38] netlink_sendmsg at ffffffff85e554ef
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Mar 25, 2026
- Updated
- Jun 17, 2026
- EPSS
- 0.1% · 2th percentile
- CWE
- —
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel5.10.223 and later · before 5.11
- linux linux kernel5.15.164 and later · before 5.15.203
- linux linux kernel5.19.12 and later · before 6.0
- linux linux kernel6.0.1 and later · before 6.1.167
- linux linux kernel6.2 and later · before 6.6.130
- linux linux kernel6.7 and later · before 6.12.77
- linux linux kernel6.13 and later · before 6.18.17
- linux linux kernel6.19 and later · before 6.19.7
- linux linux kernel6.0
- linux linux kernel7.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 5ce8fad941233e81f2afb5b52a3fcddd3ba8732f, 2e7eb4c1e8af8385de22775bd0be552f59b28c9a, 6.0affected
- f818708eeeae793e12dc39f8984ed7732048a7d9 and later · before 0e274674714427dc578bb99db5b86e312d2b57f8affected · git
- 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 and later · before 9f5e4abed9248448aa1b45b12ab0bea4d329b56aaffected · git
- 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 and later · before 7c01b680beaf4d3143866b062b8e770e8b237fb8affected · git
- 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 and later · before ec5c17c687b189dbc09dfdec11b669caa40bc395affected · git
- 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 and later · before 944a333c8e4d42256556c1d2ebb6d773a33e0dcdaffected · git
- 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 and later · before a03d96598d39fdf605d90731db3ef3b13fb8bdc8affected · git
- 8fe4ce5836e932f5766317cb651c1ff2a4cd0506 and later · before 1ac22c8eae81366101597d48360718dff9b9d980affected · git
- 5.15.164 and later · before 5.15.203affected · semver
- 5.10.223 and later · before 5.11affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.170-1 | 6.1.170-1 |
| Debian:13 | linux | before 6.12.85-1 | 6.12.85-1 |
| Debian:14 | linux | before 6.19.8-1 | 6.19.8-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 0e274674714427dc578bb99db5b86e312d2b57f8 | Vendor (CNA) |
| Linux Linux | 1ac22c8eae81366101597d48360718dff9b9d980 | Vendor (CNA) |
| Linux Linux | 5.11 | Vendor (CNA) |
| Linux Linux | 5.15.203 | Vendor (CNA) |
| Linux Linux | 5.20 | Vendor (CNA) |
| Linux Linux | 7c01b680beaf4d3143866b062b8e770e8b237fb8 | Vendor (CNA) |
| Linux Linux | 944a333c8e4d42256556c1d2ebb6d773a33e0dcd | Vendor (CNA) |
| Linux Linux | 9f5e4abed9248448aa1b45b12ab0bea4d329b56a | Vendor (CNA) |
| Linux Linux | a03d96598d39fdf605d90731db3ef3b13fb8bdc8 | Vendor (CNA) |
| Linux Linux | ec5c17c687b189dbc09dfdec11b669caa40bc395 | Vendor (CNA) |
| debian:linux | 6.1.170-1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/stable/c/0e274674714427dc578bb99db5b86e312d2b57f8
- git.kernel.org/stable/c/1ac22c8eae81366101597d48360718dff9b9d980
- git.kernel.org/stable/c/7c01b680beaf4d3143866b062b8e770e8b237fb8
- git.kernel.org/stable/c/944a333c8e4d42256556c1d2ebb6d773a33e0dcd
- git.kernel.org/stable/c/9f5e4abed9248448aa1b45b12ab0bea4d329b56a
- git.kernel.org/stable/c/a03d96598d39fdf605d90731db3ef3b13fb8bdc8
- git.kernel.org/stable/c/ec5c17c687b189dbc09dfdec11b669caa40bc395
Vendor advisories and official records. Exploit/PoC links are deliberately left out.