CVE-2025-71137 [High] | Out-of-bounds Write in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix "UBSAN: shift-out-of-bounds error" This patch ensures that the RX ring size (rx_pending) is not set below the permitted length. This avoids UBSAN shift-out-of-bounds errors when users passes small or zero ring sizes via ethtool -G.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-03-26	0.06%	0.02%	-0.04%
2	2026-02-13	0.02%	0.06%	+0.04%
3	2026-01-15	—	0.02%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-03-26

0.06%

0.02%

-0.04%

2026-02-13

0.02%

0.06%

+0.04%

2026-01-15

—

0.02%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.8	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. 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.	1.8	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.8

3.1

HIGH

CVSS:3.1/AV:L/AC:L/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:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
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.

1.8

5.9

[email protected]

OS Trackers for CVE-2025-71137

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2025-71137 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-2025-71137
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2025-71137
`suse`	medium	CVE-2025-71137 severity moderate: SUSE including 383 source package names (13.2-9.1:libsqlite3-0-3.49.1-1.1, 2.1.3-6.115:kernel-default-base-6.4.0-39.1.21.16, …), 598 product×package rows across 74 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (74 product lines)): Fixed 277, Known Affected 231, Known Not Affected 65, First Fixed 25.	https://www.suse.com/security/cve/CVE-2025-71137/
`ubuntu`	medium	CVE-2025-71137 medium priority: Ubuntu including 157 source packages (linux, linux-allwinner-5.19, …), 1562 status rows across 10 suites (bionic, focal, jammy, noble, plucky, questing, resolute, trusty, upstream, xenial): DNE 1157, ignored 179, released 150, not-affected 56, pending 12, needed 8.	https://ubuntu.com/security/CVE-2025-71137

Affected software / configurations for CVE-2025-71137

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 5.6.1, < 5.10.248	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.11, < 5.15.198	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 5.16, < 6.1.160	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.2, < 6.6.120	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.7, < 6.12.64	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.13, < 6.18.4	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	5.6	cpe:2.3:o:linux:linux_kernel:5.6:-::::::
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::::::
linux	linux_kernel	6.19	cpe:2.3:o:linux:linux_kernel:6.19:rc7::::::
linux	linux_kernel	6.19	cpe:2.3:o:linux:linux_kernel:6.19:rc8::::::

References for CVE-2025-71137

URL	Tags
https://git.kernel.org/stable/c/442848e457f5a9f71a4e7e14d24d73dae278ebe3	Patch
https://git.kernel.org/stable/c/4cc4cfe4d23c883120b6f3d41145edbaa281f2ab	Patch
https://git.kernel.org/stable/c/5d8dfa3abb9a845302e021cf9c92d941abbc011a	Patch
https://git.kernel.org/stable/c/658caf3b8aad65f8b8e102670ca4f68c7030f655	Patch
https://git.kernel.org/stable/c/85f4b0c650d9f9db10bda8d3acfa1af83bf78cf7	Patch
https://git.kernel.org/stable/c/aa743b0d98448282b2cb37356db8db2a48524624	Patch
https://git.kernel.org/stable/c/b23a2e15589466a027c9baa3fb5813c9f6a6c6dc	Patch

URL

CVE-2025-71137 | octeontx2-pf: fix "UBSAN: shift-out-of-bounds error"

Exploit prediction scoring system (EPSS) score for CVE-2025-71137

Common vulnerability scoring system (CVSS) metrics for CVE-2025-71137

Weakness enumeration for CVE-2025-71137

OS Trackers for CVE-2025-71137

Affected software / configurations for CVE-2025-71137

References for CVE-2025-71137