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CVE-2026-98453

UnknownEPSS 0.17%

Last modified

CVE-2026-98453 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: smb: client: close handle after create-context parsing failure SMB2_open() accounts a successful CREATE response as a remote open before parsing its create contexts. If smb2_parse_contexts() rejects malformed context data, SMB2_open() returns without closing the handle, leaving the server-side handle open and num_remote_opens elevated. Close the handle after a post-CREATE context parsing failure so the error path releases the remote resource and balances the open count.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: close handle after create-context parsing failure SMB2_open() accounts a successful CREATE response as a remote open before parsing its create contexts. If smb2_parse_contexts() rejects malformed context data, SMB2_open() returns without closing the handle, leaving the server-side handle open and num_remote_opens elevated. Close the handle after a post-CREATE context parsing failure so the error path releases the remote resource and balances the open count.

Metrics

EPSS Probability
0.17%

6.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 13fb0fc4917621f3dfa285a27eaf7151d770b5e5, < d4c05b5cb0a3132453e36a300d45de44bf6783c4; >= 890bc4fac3c0973a49cac35f634579bebba7fe48, < ee61f1dc516d97afa79908140d0a8c556c2fe90c; >= 1ae3c59355dc9882e09c020afe8ffbd895ad0f29, < 007b87f6a7c38959ed79cf7d3fd7b3b4eb5f67fd; >= 17a0f64cc02d4972e21c733d9f21d1c512963afa, < eaa97a196a107d4ef8775df2248181624151812e; >= af1689a9b7701d9907dfc84d2a4b57c4bc907144, < 80c67cc71d32ccafc89a29b669243b40d81b930f; >= af1689a9b7701d9907dfc84d2a4b57c4bc907144, < f09875ff901e933e7b22c913daf51d21e9d93a45; >= af1689a9b7701d9907dfc84d2a4b57c4bc907144, < cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb; >= af1689a9b7701d9907dfc84d2a4b57c4bc907144, < 566820af017e81497fb5e9d3ad6e7ffe2828bc8b; 6726429c18c62dbf5e96ebbd522f262e016553fb; >= 5.10.211, < 5.10.273; >= 5.15.150, < 5.15.224; >= 6.1.79, < 6.1.191; >= 6.6.8, < 6.6.160; >= 5.4.277, < 5.5
LinuxLinux6.7

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98453?
In the Linux kernel, the following vulnerability has been resolved: smb: client: close handle after create-context parsing failure SMB2_open() accounts a successful CREATE response as a remote open before parsing its create contexts. If smb2_parse_contexts() rejects malformed context data, SMB2_open() returns without closing the handle, leaving the server-side handle open and num_remote_opens elevated. Close the handle after a post-CREATE context parsing failure so the error path releases the remote resource and balances the open count.
How severe is CVE-2026-98453?
Severity scoring for CVE-2026-98453 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98453?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST