NVD

CVE-2026-43112 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath When cifs_sanitize_prepath is called with an empty string or a string containing only delimiters (e.g., "/"), the current logic attempts to check *(cursor2 - 1) before cursor2 has advanced. This results in an out-of-bounds read. This patch adds an early exit check after stripping prepended delimiters. If no path content remains, the function returns NULL. The bug was identified via manual audit and verified using a standalone test case compiled with AddressSanitizer, which triggered a SEGV on affected inputs.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

Nist CVSS score does not match with CNA score

CNA: kernel.org

Base Score: 8.8 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

ADP: redhat-SADP

Base Score: 8.1 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/errata/RHSA-2026:34911	redhat-SADP
https://access.redhat.com/security/cve/CVE-2026-43112	redhat-SADP
https://bugzilla.redhat.com/show_bug.cgi?id=2467015	redhat-SADP
https://git.kernel.org/stable/c/2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439	kernel.org	Patch
https://git.kernel.org/stable/c/49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3	kernel.org	Patch
https://git.kernel.org/stable/c/5d4fe469fe7dbff7d874c196bb680a82f2625d95	kernel.org	Patch
https://git.kernel.org/stable/c/78ec5bf2f589ec7fd8f169394bfeca541b077317	kernel.org	Patch
https://git.kernel.org/stable/c/86f9c23e0814cfdffda9eedf0c591c51ba209010	kernel.org	Patch
https://git.kernel.org/stable/c/a2ba20c17de8eb028f96b1d85f119d3d25655bd9	kernel.org
https://git.kernel.org/stable/c/fbced33599653471b4581dfe1abc7b467031f126	kernel.org
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43112.json	redhat-SADP

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	NIST redhat-SADP

Known Affected Software Configurations Switch to CPE 2.2

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Change History

7 change records found show changes

CVE Modified by redhat-SADP 7/03/2026 9:17:13 AM

Action

Type

Old Value

New Value

Added

Reference

https://access.redhat.com/errata/RHSA-2026:34911

Changed

Affected

[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"]}]

[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux AppStream (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux BaseOS (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux Real Time for NFV (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux Real Time (v. 10)","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"]}]

CVE Modified by redhat-SADP 6/29/2026 11:19:44 PM

Action	Type	New Value
Added	CVSS V3.1	AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Added	CWE	CWE-125
Added	Reference	https://access.redhat.com/security/cve/CVE-2026-43112
Added	Reference	https://bugzilla.redhat.com/show_bug.cgi?id=2467015
Added	Reference	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43112.json
Added	Affected	[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:7"]}]

CVE Modified by kernel.org 6/17/2026 6:48:57 AM

Action

Type

Old Value

New Value

Added

Affected

Record truncated, showing 2048 of 2310 characters.
View Entire Change Record

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["fs/smb/client/fs_context.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"c63433a09d6ae4c226fcbc66da4c58fc189fd746","lessThan":"a2ba20c17de8eb028f96b1d85f119d3d25655bd9","versionType":"git","status":"affected"},{"version":"a31080899d5fdafcccf7f39dd214a814a2c82626","lessThan":"fbced33599653471b4581dfe1abc7b467031f126","versionType":"git","status":"affected"},{"version":"a31080899d5fdafcccf7f39dd214a814a2c82626","lessThan":"5d4fe469fe7dbff7d874c196bb680a82f2625d95","versionType":"git","status":"affected"},{"version":"a31080899d5fdafcccf7f39dd214a814a2c82626","lessThan":"2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439","versionType":"git","status":"affected"},{"version":"a31080899d5fdafcccf7f39dd214a814a2c82626","lessThan":"86f9c23e0814cfdffda9eedf0c591c51ba209010","versionType":"git","status":"affected"},{"version":"a31080899d5fdafcccf7f39dd214a814a2c82626","lessThan":"49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3","versionType":"git","status":"affected"},{"version":"a31080899d5fdafcccf7f39dd214a814a2c82626","lessThan":"78ec5bf2f589ec7fd8f169394bfeca541b077317","versionType":"git","status":"affected"},{"version":"5.15.11","lessThan":"5.15.209","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["fs/smb/client/fs_context.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.16","status":"affected"},{"version":"0","lessThan":"5.16","versionType":"semver","status":"unaffected"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.136","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.83","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.24","lessThan

Initial Analysis by NIST 5/08/2026 3:43:23 PM

Action	Type	New Value
Added	CWE	CWE-125
Added	CPE Configuration	OR cpe:2.3:o:linux:linux_kernel:5.16:-::::::* cpe:2.3:o:linux:linux_kernel:5.16:rc7::::::* cpe:2.3:o:linux:linux_kernel:5.16:rc6::::::* cpe:2.3:o:linux:linux_kernel:5.16:rc8::::::* cpe:2.3:o:linux:linux_kernel:7.0:rc1::::::* cpe:2.3:o:linux:linux_kernel:7.0:rc2::::::* cpe:2.3:o:linux:linux_kernel:7.0:rc3::::::* cpe:2.3:o:linux:linux_kernel:7.0:rc4::::::* cpe:2.3:o:linux:linux_kernel:7.0:rc5::::::* cpe:2.3:o:linux:linux_kernel:7.0:rc6::::::* cpe:2.3:o:linux:linux_kernel::::::::* versions from (including) 6.13 up to (excluding) 6.18.24 cpe:2.3:o:linux:linux_kernel::::::::* versions from (including) 6.19 up to (excluding) 6.19.14 cpe:2.3:o:linux:linux_kernel::::::::* versions from (including) 6.7 up to (excluding) 6.12.83 cpe:2.3:o:linux:linux_kernel::::::::* versions from (including) 5.16.1 up to (excluding) 6.6.136
Added	Reference Type	kernel.org: https://git.kernel.org/stable/c/2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439 Types: Patch
Added	Reference Type	kernel.org: https://git.kernel.org/stable/c/49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3 Types: Patch
Added	Reference Type	kernel.org: https://git.kernel.org/stable/c/5d4fe469fe7dbff7d874c196bb680a82f2625d95 Types: Patch
Added	Reference Type	kernel.org: https://git.kernel.org/stable/c/78ec5bf2f589ec7fd8f169394bfeca541b077317 Types: Patch
Added	Reference Type	kernel.org: https://git.kernel.org/stable/c/86f9c23e0814cfdffda9eedf0c591c51ba209010 Types: Patch

New CVE Received from kernel.org 5/06/2026 6:16:24 AM

Action	Type	New Value
Added	Description	In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath When cifs_sanitize_prepath is called with an empty string or a string containing only delimiters (e.g., "/"), the current logic attempts to check *(cursor2 - 1) before cursor2 has advanced. This results in an out-of-bounds read. This patch adds an early exit check after stripping prepended delimiters. If no path content remains, the function returns NULL. The bug was identified via manual audit and verified using a standalone test case compiled with AddressSanitizer, which triggered a SEGV on affected inputs.
Added	Reference	https://git.kernel.org/stable/c/2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439
Added	Reference	https://git.kernel.org/stable/c/49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3
Added	Reference	https://git.kernel.org/stable/c/5d4fe469fe7dbff7d874c196bb680a82f2625d95
Added	Reference	https://git.kernel.org/stable/c/78ec5bf2f589ec7fd8f169394bfeca541b077317
Added	Reference	https://git.kernel.org/stable/c/86f9c23e0814cfdffda9eedf0c591c51ba209010

Quick Info

CVE Dictionary Entry:
CVE-2026-43112
NVD Published Date:
05/06/2026
NVD Last Modified:
07/03/2026
Source:
kernel.org

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2026-43112 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by redhat-SADP 7/03/2026 9:17:13 AM

CVE Modified by redhat-SADP 6/29/2026 11:19:44 PM

CVE Modified by kernel.org 6/17/2026 6:48:57 AM

CVE Modified by kernel.org 6/01/2026 1:17:04 PM

Initial Analysis by NIST 5/08/2026 3:43:23 PM

CVE Modified by kernel.org 5/08/2026 9:16:39 AM

New CVE Received from kernel.org 5/06/2026 6:16:24 AM

Quick Info