What’s Vulnerable › Vulnerabilities

CVE-2026-23282: smb: client: fix oops due to uninitialised var in smb2_unlink()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-25 · updated 2026-06-17
• Weakness: CWE-908

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix oops due to uninitialised var in smb2_unlink() If SMB2_open_init() or SMB2_close_init() fails (e.g. reconnect), the iovs set @rqst will be left uninitialised, hence calling SMB2_open_free(), SMB2_close_free() or smb2_set_related() on them will oops. Fix this by initialising @close_iov and @open_iov before setting them in @rqst.

Affected products

• Linux kernel: from 6.17.1 before 6.18.17; from 6.19 before 6.19.7; 6.17, 7.0-rc1, 7.0-rc2 — fixed in 6.18.17, 6.19.7

How to fix

Upgrade to a fixed version: Linux kernel 6.18.17, 6.19.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/048efe129a297256d3c2088cf8d79515ff5ec864
• https://git.kernel.org/stable/c/86163b98891aa9800f6103252e5acc7bb98afb91
• https://git.kernel.org/stable/c/dc710c87af3341554d02d634ada1d2036c49a94a

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