CVE-2026-31710

medium

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix dir separator in SMB1 UNIX mounts When calling cifs_mount_get_tcon() wit…

Vendor / product: Linux — linux kernel

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix dir separator in SMB1 UNIX mounts When calling cifs_mount_get_tcon() with SMB1 UNIX mounts, @cifs_sb->mnt_cifs_flags needs to be read or updated only after calling reset_cifs_unix_caps(), otherwise it might end up with missing CIFS_MOUNT_POSIXACL and CIFS_MOUNT_POSIX_PATHS bits. This fixes the wrong dir separator used in paths caused by the missing CIFS_MOUNT_POSIX_PATHS bit in cifs_sb_info::mnt_cifs_flags.

CVSS

5.5

5.5 (CVSS v3.1)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2026-05-01 14:16

Modified: 2026-11-11 21:10

NVD status: Analyzed

Last synced 5 hours ago

Verified against the source API 2026-11-11 21:11 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥7.0.1 <7.0.2, 7.0

Weakness classification (CWE)

NVD-CWE-noinfo

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/c4d3fc5844d685441befd0caaab648321013cdfd

Patch / mitigation: https://git.kernel.org/stable/c/fbbfcf35e1ee3396631f3dc6214cb626aa9814c3

References

https://git.kernel.org/stable/c/c4d3fc5844d685441befd0caaab648321013cdfd 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/fbbfcf35e1ee3396631f3dc6214cb626aa9814c3 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-11-11 21:11 UTC · record ↗

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CVE-2026-31710

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Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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