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TI-2023-30079 Aliases CVE-2023-53794GHSA-x47f-6fjp-7wj4

cifs: fix session state check in reconnect to avoid use-after-free issue

Priority MEDIUM 49Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00511 43rd percentileScored 2026-11-07
Fix Partial Linux (Linux): 3.11, 3.13, 3.15 +8Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux3.10.103 to before 3.11; 3.12.63 to before 3.13; 3.14.74 to before 3.15; 3.16.37 to before 3.17; 3.18.37 to before 3.19; 4.1.28 to before 4.2; 4.4.16 to before 4.5; 4.6.5 to before 4.73.11, 3.13, 3.15, 3.17, 3.19, 4.2, 4.5, 4.7Patch availableCNA
LinuxLinux4.7 and later6.1.47, 6.4.12, 6.5Patch availableCNA
  • Linux VendorLinux Affected 3.10.103 to before 3.11; 3.12.63 to before 3.13; 3.14.74 to before 3.15; 3.16.37 to before 3.17; 3.18.37 to before 3.19; 4.1.28 to before 4.2; 4.4.16 to before 4.5; 4.6.5 to before 4.7 Fixed in 3.11, 3.13, 3.15, 3.17, 3.19, 4.2, 4.5, 4.7 Patch available CNA
  • Linux VendorLinux Affected 4.7 and later Fixed in 6.1.47, 6.4.12, 6.5 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 3.11, 3.13, 3.15, 3.17, 3.19, 4.2, 4.5, 4.7
  • Fix · CNA Linux (Linux) Fixed in 6.1.47, 6.4.12, 6.5

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 8AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Not affected: 3 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-53794
  2. 2026-10-03 Alias added: GHSA-x47f-6fjp-7wj4
  3. 2026-10-16 CISA SSVC decision points changed

References

Other 3

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
See all 21741 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences