CVE-2023-53794cifs: fix session state check in reconnect to avoid use-after-free issue
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: cifs: fix session state check in reconnect to avoid use-after-free issue Don't collect exiting session in smb2_reconnect_server(), because it will be released soon. Note that the exiting session will stay in server->smb_ses_list until it complete the cifs_free_ipc() and logoff() and then delete itself from the list.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 4fcd1813e6404dd4420c7d12fb483f9320f0bf93 before 7e4f5c3f01fb0e51ca438e43262d858daf9a0a76; from 4fcd1813e6404dd4420c7d12fb483f9320f0bf93 before 759ffc164d95a32c09528766d74d9b4fb054e8f4; from 4fcd1813e6404dd4420c7d12fb483f9320f0bf93 before 99f280700b4cc02d5f141b8d15f8e9fad0418f65; 655e0c067f0e02ece03fd0591dabe3db2ae27552; 875cc09c0767a4ac06b57af383709657f98b3ea1; 599fe1409085059ba12a2c3897c853be9fa9e7cf; 2e4378ee60049b752c9dce16f62ce6fbd11b379a; 59b520454b323ec43b2ae757217332cea33091e0; and 11 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/7e4f5c3f01fb0e51ca438e43262d858daf9a0a76
- https://git.kernel.org/stable/c/759ffc164d95a32c09528766d74d9b4fb054e8f4
- https://git.kernel.org/stable/c/99f280700b4cc02d5f141b8d15f8e9fad0418f65
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.