CVE-2026-53010ksmbd: fix use-after-free in smb2_open during durable reconnect
- 9.8CriticalCVSS base score
- 0.44%Exploitation in 30 daysEPSS · top 61% 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: ksmbd: fix use-after-free in smb2_open during durable reconnect In smb2_open, the call to ksmbd_put_durable_fd(fp) drops the reference to the durable file descriptor early during the durable reconnect process. If an error occurs subsequently (eg, ksmbd_iov_pin_rsp fails) or a scavenger accesses the file, it leads to a use-after-free when accessing fp properties (eg fp->create_time). Move the single put to the end of the function below err_out2 so fp stays valid until smb2_open returns.
Timeline
ID reserved
By Linux
- 15 days later
· 15 days later
Published
- 3 months later
· 3 months 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 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.44% · top 61% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected 8df4bcdb0a4232192b2445256c39b787d58ef14d – < f0ff7f12398e85b3a11745ff7feab6246f3d75c2
- affected c8efcc786146a951091588e5fa7e3c754850cb3c – < 4db3dcac84c2f14a45ae201efb38de1fb1bfc009
- affected c8efcc786146a951091588e5fa7e3c754850cb3c – < ce2e164c1c51c3f7813b80f8c926836e896bcbb3
- affected c8efcc786146a951091588e5fa7e3c754850cb3c – < 97a0cd55283b4e63fd92804da91c8d9896adcad9
- affected c8efcc786146a951091588e5fa7e3c754850cb3c – < 1baff47b81f94f9231c91236aa511420d0e266b9
- affected 6.6.32 – < 6.6.157
- affected 6.9
- unaffected < 6.9
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.33 – ≤ 6.18.*
- unaffected 7.0.10 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References5
- https://git.kernel.org/stable/c/f0ff7f12398e85b3a11745ff7feab6246f3d75c2 (opens in a new tab)
- https://git.kernel.org/stable/c/4db3dcac84c2f14a45ae201efb38de1fb1bfc009 (opens in a new tab)
- https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3 (opens in a new tab)
- https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9 (opens in a new tab)
- https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9 (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-2026-38878 (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-2026-53010)Record last updated .