Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-52989

nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
Back to all
CVE

CVE-2026-52989

nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers

In the Linux kernel, the following vulnerability has been resolved:

nvmet-tcp: propagate nvmettcpbuildpduiovec() errors to its callers

Currently, when nvmettcpbuildpduiovec() detects an out-of-bounds

PDU length or offset, it triggers nvmettcpfatal_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->recvmsg.msgiter was left uninitialized.

Callers such as nvmettcphandleh2cdata_pdu() proceed to blindly

overwrite the queue state with queue->rcvstate = NVMETTCPRECVDATA

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.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/046fa5c72d15cd8e2d592e275697ea399d8f76b0, https://git.kernel.org/stable/c/3df42a854686fa06484e37ac1a3931c8e3e3453c, https://git.kernel.org/stable/c/c2a11441538bdbbc5aa003f190995eba93a89b88, https://git.kernel.org/stable/c/d7c8f95f599b3b38a717d2e771c3f8c174f657c3, https://git.kernel.org/stable/c/ea8e356acb165cb1fd75537a52e1f66e5e76c538, https://git.kernel.org/stable/c/f9204a2b78dd18374d3bcf9bf93d9021ce22de1b, https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52989.json, https://access.redhat.com/security/cve/CVE-2026-52989, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52989.json, https://nvd.nist.gov/vuln/detail/CVE-2026-52989, https://bugzilla.redhat.com/show_bug.cgi?id=2492443, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00342%
EPSS Percentile
0.26267%
Introduced Version
1385be357e8acd09b36e026567f3a9d5c61139de,dca1a6ba0da9f472ef040525fab10fd9956db59f,19672ae68d52ff75347ebe2420dde1b07adca09f,ab200d71553bdcf4de554a5985b05b2dd606bc57,52a0a98549344ca20ad81a4176d68d28e3c05a5c,0,6.1.163,6.6.124,6.12.70,6.18.10,5.10.250,5.15.200,6.2.0,6.7.0,6.13.0,6.19.0
Fix Available
3df42a854686fa06484e37ac1a3931c8e3e3453c,d7c8f95f599b3b38a717d2e771c3f8c174f657c3,f9204a2b78dd18374d3bcf9bf93d9021ce22de1b,c2a11441538bdbbc5aa003f190995eba93a89b88,ea8e356acb165cb1fd75537a52e1f66e5e76c538,6.1.175,6.6.141,6.12.91,6.18.33,5.11,5.16,7.0.10,6.1.176-1,6.1.176-1~deb11u1,6.12.94-1

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading