In the Linux kernel, the following vulnerability has been resolved:
xfrm: clear trailing padding in build_polexpire()
build_expire() clears the trailing padding bytes of struct
xfrm_user_expire after setting the hard field via memset_after(),
but the analogous function build_polexpire() does not do this for
struct xfrm_user_polexpire.
The padding bytes after the __u8 hard field are left
uninitialized from the heap allocation, and are then sent to
userspace via netlink multicast to XFRMNLGRP_EXPIRE listeners,
leaking kernel heap memory contents.
Add the missing memset_after() call, matching build_expire().
References
Configurations
Configuration 1 (hide)
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History
27 Apr 2026, 19:59
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/71a98248c63c535eaa4d4c22f099b68d902006d0 - Patch | |
| References | () https://git.kernel.org/stable/c/ac6985903db047eaff54db929e4bf6b06782788e - Patch | |
| References | () https://git.kernel.org/stable/c/b1dfd6b27df35ef4f87825aa5f607378d23ff0f2 - Patch | |
| References | () https://git.kernel.org/stable/c/c221ed63a2769a0af8bd849dfe25740048f34ef4 - Patch | |
| References | () https://git.kernel.org/stable/c/e1af65c669ebb1666c54576614c01a7f9ffcfff6 - Patch | |
| References | () https://git.kernel.org/stable/c/eda30846ea54f8ed218468e5480c8305ca645e37 - Patch | |
| CWE | NVD-CWE-noinfo | |
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
24 Apr 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-24 15:16
Updated : 2026-04-27 19:59
NVD link : CVE-2026-31664
Mitre link : CVE-2026-31664
CVE.ORG link : CVE-2026-31664
JSON object : View
Products Affected
linux
- linux_kernel
CWE