CVE-2023-28466

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).

Published: 2023-03-15 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-28466 is rated Low Risk (34.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.27%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-28466

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 0.27% +0.26%
2 2025-11-21 0.08% 0.02% -0.07%
3 2025-11-18 — 0.08% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-28466

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.0 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 5.9 [email protected]
7.0 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-28466

OS Trackers for CVE-2023-28466

vendor priority summary link
debian not yet assigned CVE-2023-28466 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2023-28466
redhat medium — https://access.redhat.com/security/cve/CVE-2023-28466
suse high CVE-2023-28466 severity important: SUSE including 641 source package names (1.2.3-2.2.63:kernel-rt-5.14.21-150400.15.23.1, 2.0.2-3.2.23:kernel-rt-5.14.21-150500.13.5.1, …), 1335 product×package rows across 214 product lines (Container rancher/elemental-teal-rt/5.4, Container suse/sle-micro-rancher/5.2, … (214 product lines)): Fixed 1139, Known Affected 147, Known Not Affected 49. https://www.suse.com/security/cve/CVE-2023-28466/
ubuntu medium CVE-2023-28466 medium priority: Ubuntu including 167 source packages (linux, linux-allwinner, …), 1818 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1360, released 212, not-affected 129, ignored 102, needed 15. https://ubuntu.com/security/CVE-2023-28466

Affected software / configurations for CVE-2023-28466

Vendor Product Version Raw CPE
linux linux_kernel >= 4.13, <= 5.4.240 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.5, < 5.10.177 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.11, < 5.15.105 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.16, < 6.1.20 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 6.2, < 6.2.7 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
netapp h300s — cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
netapp h410c — cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
netapp h410s — cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
netapp h500s — cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
netapp h700s — cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2023-28466

cvelogic Threat Intelligence