CVE-2026-52989In 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-o…
Updated under an hour ago ()
Does this affect you?
It affects linux_kernel. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-908, CWE-390
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Aug 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 5.10.250 before 5.11; from 5.15.200 before 5.16; from 6.1.163 before 6.1.175; from 6.6.124 before 6.6.141; from 6.12.70 before 6.12.91; from 6.18.10 before 6.18.33; from 6.19.1 before 7.0.10; 6.19; and 1 more ranges | NVD |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.