nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers Currently, when nvmet_tcp_build_pdu_iovec() detects an out-of-bounds PDU length or offset, it triggers nvmet_tcp_fatal_error(cmd->queue) and returns early. However, because the function returns void, the callers are entirely unaware that a fatal error has occurred and that the cmd->recv_msg.msg_iter was left uninitialized. Callers such as nvmet_tcp_handle_h2c_data_pdu() proceed to blindly overwrite the queue state with queue->rcv_state = NVMET_TCP_RECV_DATA Consequently, the socket receiving loop may attempt to read incoming network data into the uninitialized iterator. Fix this by shifting the error handling responsibility to the callers.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 6.1.163 to before 6.1.175; 6.6.124 to before 6.6.141; 6.12.70 to before 6.12.91; 6.18.10 to before 6.18.33; 5.10.250 to before 5.11; 5.15.200 to before 5.16 | 6.1.175, 6.6.141, 6.12.91, 6.18.33, 5.11, 5.16 | Patch available | CNA |
| Linux | Linux | 6.19 and later | 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1 | Patch available | CNA |
- Linux VendorLinux Affected 6.1.163 to before 6.1.175; 6.6.124 to before 6.6.141; 6.12.70 to before 6.12.91; 6.18.10 to before 6.18.33; 5.10.250 to before 5.11; 5.15.200 to before 5.16 Fixed in 6.1.175, 6.6.141, 6.12.91, 6.18.33, 5.11, 5.16 Patch available CNA
- Linux VendorLinux Affected 6.19 and later Fixed in 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.10.250 to before 5.11; 5.15.200 to before 5.16; 6.1.163 to before 6.1.175; 6.6.124 to before 6.6.141; 6.12.70 to before 6.12.91; 6.18.10 to before 6.18.33; 6.19.1 to before 7.0.10 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:* | 6.19 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | 7.1 rc1 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.10.250 to before 5.11; 5.15.200 to before 5.16; 6.1.163 to before 6.1.175; 6.6.124 to before 6.6.141; 6.12.70 to before 6.12.91; 6.18.10 to before 6.18.33; 6.19.1 to before 7.0.10 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:* Versions 6.19 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* Versions 7.1 rc1 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.175, 6.6.141, 6.12.91, 6.18.33, 5.11, 5.16
- Fix · CNA Linux (Linux) Fixed in 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-52989
- 2026-10-03 Alias added: GHSA-m4w6-2g7f-9j5p
References
Patch 6
- https://git.kernel.org/stable/c/3df42a854686fa06484e37ac1a3931c8e3e3453c
- https://git.kernel.org/stable/c/d7c8f95f599b3b38a717d2e771c3f8c174f657c3
- https://git.kernel.org/stable/c/f9204a2b78dd18374d3bcf9bf93d9021ce22de1b
- https://git.kernel.org/stable/c/c2a11441538bdbbc5aa003f190995eba93a89b88
- https://git.kernel.org/stable/c/046fa5c72d15cd8e2d592e275697ea399d8f76b0
- https://git.kernel.org/stable/c/ea8e356acb165cb1fd75537a52e1f66e5e76c538
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2026-52989 · CVE Program
- CVE-2026-52989 · NVD
- FIRST EPSS
- GHSA-m4w6-2g7f-9j5p · GitHub Advisory Database · CC BY 4.0
- CVE-2026-52989 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences