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8.8 High

CVE-2026-43112 In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in…

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.

Affected products and versions

Product Affected versions Fixed in
Linux 7.0 earliest → < 7.0 7.0
Linux 6.19 earliest → < 6.19.14 6.19.14
Linux 6.18 earliest → < 6.18.24 6.18.24
Linux 6.12 earliest → < 6.12.83 6.12.83
Linux 6.6 earliest → < 6.6.136 6.6.136
Linux 6.1 earliest → < 6.1.175 6.1.175
Linux 5.16 No fix stated
Linux 5.15 earliest → < 5.15.209 5.15.209
Red Hat Enterprise Linux 10 Versions not published
Show the 38 other branches
Product Affected versions Fixed in
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat OpenShift Container Platform 4 Versions not published
Red Hat Enterprise Linux 6 Versions not published
Red Hat Enterprise Linux 7 Versions not published
Red Hat Enterprise Linux AppStream (v. 10) Versions not published
Red Hat Enterprise Linux BaseOS (v. 10) Versions not published
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) Versions not published
Red Hat Enterprise Linux Real Time for NFV (v. 10) Versions not published
Red Hat Enterprise Linux Real Time (v. 10) Versions not published
Red Hat Enterprise Linux AppStream (v. 9) Versions not published
Red Hat Enterprise Linux BaseOS (v. 9) Versions not published
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) Versions not published
Red Hat Enterprise Linux Real Time for NFV (v. 9) Versions not published
Red Hat Enterprise Linux Real Time (v. 9) Versions not published
Red Hat Enterprise Linux BaseOS (v. 8) Versions not published
Red Hat Enterprise Linux CRB (v. 8) Versions not published
Red Hat Enterprise Linux NFV (v. 8) Versions not published
Red Hat Enterprise Linux RT (v. 8) Versions not published
Red Hat OpenShift Container Platform 4.22 4.22 earliest → < 4.22.9.8.202607152026-0 4.22.9.8.202607152026-0
Red Hat Enterprise Linux 10.0 Extended Update Support Versions not published
Red Hat Enterprise Linux 8.8 Telecommunications Update Service Versions not published
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Versions not published
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.6 Extended Update Support Versions not published
Red Hat OpenShift Container Platform 4.19 4.19 earliest → < 4.19.9.6.202608182320-0 4.19.9.6.202608182320-0
Red Hat OpenShift Container Platform 4.20 4.20 earliest → < 4.20.9.6.202608181658-0 4.20.9.6.202608181658-0
Red Hat OpenShift Container Platform 4.21 4.21 earliest → < 4.21.9.6.202608180431-0 4.21.9.6.202608180431-0
Red Hat OpenShift Container Platform 4.12 412.86 earliest → < 412.86.202608241157-0 412.86.202608241157-0
Red Hat OpenShift Container Platform 4.17 417.94 earliest → < 417.94.202608250221-0 417.94.202608250221-0
Red Hat OpenShift Container Platform 4.16 416.94 earliest → < 416.94.202609011112-0 416.94.202609011112-0
Red Hat OpenShift Container Platform 4.14 414.92 earliest → < 414.92.202609011250-0 414.92.202609011250-0
Red Hat OpenShift Container Platform 4.13 413.92 earliest → < 413.92.202609080414-0 413.92.202609080414-0
Red Hat OpenShift Container Platform 4.18 418.94 earliest → < 418.94.202609031320-0 418.94.202609031320-0
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Versions not published

References

Timeline

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