Skip to content
CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-53010

ksmbd: fix use-after-free in smb2_open during durable reconnect

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 8df4bcdb0a4232192b2445256c39b787d58ef14d to < f0ff7f12398e85b3a11745ff7feab6246f3d75c2affected
  • c8efcc786146a951091588e5fa7e3c754850cb3c to < 4db3dcac84c2f14a45ae201efb38de1fb1bfc009affected
  • c8efcc786146a951091588e5fa7e3c754850cb3c to < ce2e164c1c51c3f7813b80f8c926836e896bcbb3affected
  • c8efcc786146a951091588e5fa7e3c754850cb3c to < 97a0cd55283b4e63fd92804da91c8d9896adcad9affected
  • c8efcc786146a951091588e5fa7e3c754850cb3c to < 1baff47b81f94f9231c91236aa511420d0e266b9affected
  • 6.6.32 to < 6.6.157affected

Linux Linux

Default version status: affected

  • 6.9affected
  • 0 to < 6.9unaffected
  • 6.6.157 to ≤ 6.6.*unaffected
  • 6.12.110 to ≤ 6.12.*unaffected
  • 6.18.33 to ≤ 6.18.*unaffected
  • 7.0.10 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References