CVE-2026-23071 [Medium] | Security Vulnerability in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: regmap: Fix race condition in hwspinlock irqsave routine Previously, the address of the shared member '&map->spinlock_flags' was passed directly to 'hwspin_lock_timeout_irqsave'. This creates a race condition where multiple contexts contending for the lock could overwrite the shared flags variable, potentially corrupting the state for the current lock owner. Fix this by using a local stack variable 'flags' to store the IRQ state temporarily.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-02-05	—	0.02%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-02-05

—

0.02%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
4.7	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.0	3.6	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

4.7

3.1

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.0

3.6

[email protected]

OS Trackers for CVE-2026-23071

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2026-23071 not yet assigned priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6.	https://security-tracker.debian.org/tracker/CVE-2026-23071
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2026-23071
`suse`	medium	CVE-2026-23071 severity moderate: SUSE including 418 source package names (2.1.3-6.124:kernel-default-base-6.4.0-40.1.21.17, 2.1.3-7.105:kernel-default-6.4.0-40.1, …), 652 product×package rows across 44 product lines (Container suse/sl-micro/6.0/base-os-container, Container suse/sl-micro/6.0/kvm-os-container, … (44 product lines)): Fixed 308, Known Affected 231, Known Not Affected 51, Will Not Fix 37, First Fixed 25.	https://www.suse.com/security/cve/CVE-2026-23071/
`ubuntu`	medium	CVE-2026-23071 medium priority: Ubuntu including 157 source packages (linux, linux-allwinner-5.19, …), 1256 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): DNE 871, ignored 170, released 102, needed 89, pending 16, not-affected 8.	https://ubuntu.com/security/CVE-2026-23071

Affected software / configurations for CVE-2026-23071

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 4.15, < 5.10.249	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.199	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 6.1.162	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.2, < 6.6.122	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.7, < 6.12.68	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.13, < 6.18.8	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.19	cpe:2.3:o:linux:linux_kernel:6.19:rc1::::::
linux	linux_kernel	6.19	cpe:2.3:o:linux:linux_kernel:6.19:rc2::::::
linux	linux_kernel	6.19	cpe:2.3:o:linux:linux_kernel:6.19:rc3::::::
linux	linux_kernel	6.19	cpe:2.3:o:linux:linux_kernel:6.19:rc4::::::
linux	linux_kernel	6.19	cpe:2.3:o:linux:linux_kernel:6.19:rc5::::::
linux	linux_kernel	6.19	cpe:2.3:o:linux:linux_kernel:6.19:rc6::::::

References for CVE-2026-23071

URL	Tags
https://git.kernel.org/stable/c/24f31be6ad70537fd7706269d99c92cade465a09	Patch
https://git.kernel.org/stable/c/4aab0ca0a0f7760e33edcb4e47576064d05128f5	Patch
https://git.kernel.org/stable/c/4b58aac989c1e3fafb1c68a733811859df388250	Patch
https://git.kernel.org/stable/c/766e243ae8c8b27087a4cc605752c0d5ee2daeab	Patch
https://git.kernel.org/stable/c/c2d2cf710dc3ee1a69e00b4ed8de607a92a07889	Patch
https://git.kernel.org/stable/c/e1a7072bc4f958c9e852dc7e57e39f12b0bb44b5	Patch
https://git.kernel.org/stable/c/f1e2fe26a51eca95b41420af76d22c2e613efd5e	Patch

URL

CVE-2026-23071 | regmap: Fix race condition in hwspinlock irqsave routine

Exploit prediction scoring system (EPSS) score for CVE-2026-23071

Common vulnerability scoring system (CVSS) metrics for CVE-2026-23071

Weakness enumeration for CVE-2026-23071

OS Trackers for CVE-2026-23071

Affected software / configurations for CVE-2026-23071

References for CVE-2026-23071