CVE-2026-98451smb: client: use finish_no_open() for non-regular inodes
- 8.8HighCVSS base score
- 0.40%Exploitation in 30 daysEPSS · top 65% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: use finish_no_open() for non-regular inodes An O_CREAT open can find an existing symlink or another non-regular inode. cifs_atomic_open() calls finish_open() on it and attaches a cifsFileInfo. Symlink inodes have no CIFS release operation, so the dentry reference held by cifsFileInfo is leaked. FMODE_OPENED also prevents the VFS from following the symlink. Track whether cifs_do_create() returned an open server handle. For non-regular inodes, close the handle if present, remove the pending open, and call finish_no_open() so the VFS can continue the lookup. Do not set FMODE_CREATED unless a regular file was opened. For O_NOFOLLOW with __O_REGULAR, return -ELOOP before the VFS's -EFTYPE check. Defer closing a legacy POSIX handle on a non-regular inode until after inode lookup. This avoids closing it again if lookup fails.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 12 days later
· 12 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.40% · top 65% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected d2c127197dfc0b2bae62a52e1e0d3e3ff493919e – < bc585d5a381ab49cb611c35dda93a997214ca874
- affected d2c127197dfc0b2bae62a52e1e0d3e3ff493919e – < 26f4bca335e719e291995e28dc434de0145a6a54
- affected d2c127197dfc0b2bae62a52e1e0d3e3ff493919e – < 51c7b0593f6eaba05349fd2a01a9cb4df7d7412f
- affected d2c127197dfc0b2bae62a52e1e0d3e3ff493919e – < 045532f920d86dd76600b635f9756e5fd671ddfc
- affected d2c127197dfc0b2bae62a52e1e0d3e3ff493919e – < ed03d547598c92a036f20e89156540995cac889a
- affected d2c127197dfc0b2bae62a52e1e0d3e3ff493919e – < 70a7918fda54a06d836acc91eb9a3c7e860fe0a0
- affected d2c127197dfc0b2bae62a52e1e0d3e3ff493919e – < 3c07deb26273155c180aedfd9041ab58015d2521
- affected d2c127197dfc0b2bae62a52e1e0d3e3ff493919e – < e66cf1625ec4a3fe68346119f371def713fd0a4d
- affected 3.6
- unaffected < 3.6
- unaffected 5.10.273 – ≤ 5.10.*
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.56 – ≤ 6.18.*
- unaffected 7.2.9 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/bc585d5a381ab49cb611c35dda93a997214ca874 (opens in a new tab)
- https://git.kernel.org/stable/c/26f4bca335e719e291995e28dc434de0145a6a54 (opens in a new tab)
- https://git.kernel.org/stable/c/51c7b0593f6eaba05349fd2a01a9cb4df7d7412f (opens in a new tab)
- https://git.kernel.org/stable/c/045532f920d86dd76600b635f9756e5fd671ddfc (opens in a new tab)
- https://git.kernel.org/stable/c/ed03d547598c92a036f20e89156540995cac889a (opens in a new tab)
- https://git.kernel.org/stable/c/70a7918fda54a06d836acc91eb9a3c7e860fe0a0 (opens in a new tab)
- https://git.kernel.org/stable/c/3c07deb26273155c180aedfd9041ab58015d2521 (opens in a new tab)
- https://git.kernel.org/stable/c/e66cf1625ec4a3fe68346119f371def713fd0a4d (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-103691 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98451)Record last updated .