In the Linux kernel, the following vulnerability has been resolved:
netfilter: conntrack: add missing netlink policy validations
Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink.
These attributes are used by the kernel without any validation.
Extend the netlink policies accordingly.
Quoting the reporter:
nlattr_to_sctp() assigns the user-supplied CTA_PROTOINFO_SCTP_STATE
value directly to ct->proto.sctp.state without checking that it is
within the valid range. [..]
and: ... with exp->dir = 100, the access at
ct->master->tuplehash[100] reads 5600 bytes past the start of a
320-byte nf_conn object, causing a slab-out-of-bounds read confirmed by
UBSAN.
References
Configurations
Configuration 1 (hide)
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History
01 Jun 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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20 May 2026, 16:22
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/0fbae1e74493d5a160a70c51aeba035d8266ea7d - Patch | |
| References | () https://git.kernel.org/stable/c/67c53c1978cef3c504237275e39c857e2f6af56e - Patch | |
| References | () https://git.kernel.org/stable/c/9174d28f3f15d8c4962f5980c0be167633880443 - Patch | |
| References | () https://git.kernel.org/stable/c/c5e918390002edf0cff80a0e7ce1f86f16a9507c - Patch | |
| References | () https://git.kernel.org/stable/c/f900e1d77ee0ef87bfb5ab3fe60f0b3d8ad5ba05 - Patch | |
| First Time |
Linux linux Kernel
Linux |
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| CWE | CWE-787 | |
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
27 Apr 2026, 14:16
| Type | Values Removed | Values Added |
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
| References |
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22 Apr 2026, 13:16
| Type | Values Removed | Values Added |
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| References |
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06 Apr 2026, 08:16
| Type | Values Removed | Values Added |
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| New CVE |
Information
Published : 2026-04-06 08:16
Updated : 2026-06-01 17:16
NVD link : CVE-2026-31407
Mitre link : CVE-2026-31407
CVE.ORG link : CVE-2026-31407
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-787
Out-of-bounds Write