Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 1385be357e8acd09b36e026567f3a9d5c61139de, < 3df42a854686fa06484e37ac1a3931c8e3e3453c; >= dca1a6ba0da9f472ef040525fab10fd9956db59f, < d7c8f95f599b3b38a717d2e771c3f8c174f657c3; >= 19672ae68d52ff75347ebe2420dde1b07adca09f, < f9204a2b78dd18374d3bcf9bf93d9021ce22de1b; >= ab200d71553bdcf4de554a5985b05b2dd606bc57, < c2a11441538bdbbc5aa003f190995eba93a89b88; >= 52a0a98549344ca20ad81a4176d68d28e3c05a5c, < 046fa5c72d15cd8e2d592e275697ea399d8f76b0; >= 52a0a98549344ca20ad81a4176d68d28e3c05a5c, < ea8e356acb165cb1fd75537a52e1f66e5e76c538; 043b4307a99f902697349128fde93b2ddde4686c; 42afe8ed8ad2de9c19457156244ef3e1eca94b5d; >= 6.1.163, < 6.1.175; >= 6.6.124, < 6.6.141; >= 6.12.70, < 6.12.91; >= 6.18.10, < 6.18.33; >= 5.10.250, < 5.11; >= 5.15.200, < 5.16 |
| Linux | Linux | 6.19 |
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 6 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
References
- https://git.kernel.org/stable/c/046fa5c72d15cd8e2d592e275697ea399d8f76b0Patch
- https://git.kernel.org/stable/c/3df42a854686fa06484e37ac1a3931c8e3e3453cPatch
- https://git.kernel.org/stable/c/c2a11441538bdbbc5aa003f190995eba93a89b88Patch
- https://git.kernel.org/stable/c/d7c8f95f599b3b38a717d2e771c3f8c174f657c3Patch
- https://git.kernel.org/stable/c/ea8e356acb165cb1fd75537a52e1f66e5e76c538Patch
- https://git.kernel.org/stable/c/f9204a2b78dd18374d3bcf9bf93d9021ce22de1bPatch
- https://access.redhat.com/security/cve/CVE-2026-52989Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492443Issue Tracking, Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52989.jsonThird Party Advisory
Timeline
- Published
- Jun 24, 2026
- Last modified
- Aug 21, 2026
- NVD status
- Modified