CVE-2026-89849: scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path
Noroxi assessment
Priority: Monitor (action score 35/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.36% (FIRST EPSS).
- Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Linux Linux 0f41d07d72f2245208c45374ca8d0a1846cad667, 29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9, 8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 0f41d07d72f2245208c45374ca8d0a1846cad667, 29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9, 8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path qla2x00_status_entry() filters out non-TYPE_SRB entries and the SRB_NVME_CMD, SRB_BIDI_CMD and SRB_TM_CMD types, then falls through to a SCSI fast path that assumes the command is an SRB_SCSI_CMD. The first thing on that path, qla_chk_edif_rx_sa_delete_pending(), and the subsequent handling both evaluate GET_CMD_SP(sp), i.e. sp->u.scmd.cmd. The srb u union overlays the SCSI command pointer with other command layouts (bsg_job, iocb_cmd). If firmware delivers an unexpected STATUS_TYPE IOCB for a non-SCSI handle, sp->u.scmd.cmd can read as a non-NULL garbage pointer, bypassing the NULL checks in qla_chk_edif_rx_sa_delete_pending() and at the cp == NULL test, and leading to a wild pointer dereference. Reject any SRB whose type is not SRB_SCSI_CMD before entering the fast path. The outstanding_cmds slot is left untouched so a genuinely non-SCSI command still completes through its proper handler.
- Published
- Sep 16, 2026
- Updated
- Oct 19, 2026
- EPSS
- 0.3% · 30th percentile
- CWE
- —
Report tools
Action score
35
Monitor
Low priority for now.
- CVSS
- 35 / 40 · 8.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 8.8
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
—
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
- 5.15affected
- dd30706e73b70d67e88fdaca688db7a3374fd5de and later · before 9204fb0888374083be74f799049649a17eab4191affected · git
- dd30706e73b70d67e88fdaca688db7a3374fd5de and later · before b7418198b45b327194b97f856fe8ea8daa91f3fdaffected · git
- dd30706e73b70d67e88fdaca688db7a3374fd5de and later · before 8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6affected · git
- dd30706e73b70d67e88fdaca688db7a3374fd5de and later · before e38041b47c29316ba79b645e2ae0b713d216b1dbaffected · git
- dd30706e73b70d67e88fdaca688db7a3374fd5de and later · before e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805affected · git
- dd30706e73b70d67e88fdaca688db7a3374fd5de and later · before 29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9affected · git
- dd30706e73b70d67e88fdaca688db7a3374fd5de and later · before 0f41d07d72f2245208c45374ca8d0a1846cad667affected · git
- before 5.15not affected · semver
- 5.15.221 and later · up to and including 5.15.*not affected · 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 6.1.190-1 | 6.1.190-1 |
| Debian:12 | linux-6.12 | before 6.12.111-1~deb12u1 | 6.12.111-1~deb12u1 |
| Debian:13 | linux | before 6.12.111-1 | 6.12.111-1 |
| Debian:14 | linux | before 7.2.6-1 | 7.2.6-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
Published before and after this one in the same product
- ← EarlierCVE-2026-89847Sep 16, 2026 · scsi: qla2xxx: Avoid double completion in async IOCB timeout39Monitor
- ← EarlierCVE-2026-89848Sep 16, 2026 · scsi: qla2xxx: Quiesce response IRQ before freeing request queue32Monitor
- Later →CVE-2026-89850Sep 16, 2026 · scsi: qla2xxx: Don't query firmware state while chip is down0Monitor
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 | 0f41d07d72f2245208c45374ca8d0a1846cad667 | Vendor (CNA) |
| Linux Linux | 29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9 | Vendor (CNA) |
| Linux Linux | 8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6 | Vendor (CNA) |
| Linux Linux | 9204fb0888374083be74f799049649a17eab4191 | Vendor (CNA) |
| Linux Linux | b7418198b45b327194b97f856fe8ea8daa91f3fd | Vendor (CNA) |
| Linux Linux | e38041b47c29316ba79b645e2ae0b713d216b1db | Vendor (CNA) |
| Linux Linux | e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805 | Vendor (CNA) |
| azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 | — | Microsoft (MSRC) |
| azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 | 6.6.157.1-1 · Release Notes | Microsoft (MSRC) |
| debian:linux | 6.1.190-1 · Debian:12 | Package registry (OSV) |
| debian:linux | 6.12.111-1 · Debian:13 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.111-1~deb12u1 · 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).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-1114 · Sep 17, 2026(Linux Kernel Güvenlik Bildirimi)
Technical details
Attack conditions
- Someone on the same network segment can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Adjacent
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
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
Show all references (6 more)Show less
- git.kernel.org/stable/c/29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9
- git.kernel.org/stable/c/8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6
- git.kernel.org/stable/c/9204fb0888374083be74f799049649a17eab4191
- git.kernel.org/stable/c/b7418198b45b327194b97f856fe8ea8daa91f3fd
- git.kernel.org/stable/c/e38041b47c29316ba79b645e2ae0b713d216b1db
- git.kernel.org/stable/c/e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805
Vendor advisories and official records. Exploit/PoC links are deliberately left out.