TI-2024-23729 Aliases CVE-2024-35864 GHSA-rpmq-xq2g-32wx

smb: client: fix potential UAF in smb2_is_valid_lease_break()

MEDIUM 44CWE-416Published 2024-05-19 · Updated 2026-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 5 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in smb2_is_valid_lease_break() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00662 51st percentileScored 2026-11-07

Fix Partial Linux (Linux): 3.13, 6.1.85, 6.6.26 +2Red Hat: 1 advisoryRed Hat: 5 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	3.12.48 to before 3.13	3.13	Patch available	CNA
Linux	Linux	3.13 and later	6.1.85, 6.6.26, 6.8.5, 6.9	Patch available	CNA

Linux VendorLinux Affected 3.12.48 to before 3.13 Fixed in 3.13 Patch available CNA
Linux VendorLinux Affected 3.13 and later Fixed in 6.1.85, 6.6.26, 6.8.5, 6.9 Patch available CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	before 6.1.85; 6.2 to before 6.6.26; 6.7 to before 6.8.5	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.9:rc1::::::	6.9 rc1	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.9:rc2::::::	6.9 rc2	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 6.1.85; 6.2 to before 6.6.26; 6.7 to before 6.8.5 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* Versions 6.9 rc1 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* Versions 6.9 rc2 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 3.13
Fix · CNA Linux (Linux) Fixed in 6.1.85, 6.6.26, 6.8.5, 6.9

Red Hat 1 advisory

RHSA-2024:9315 Released 2024-11-12 · Red Hat rating Moderate
kernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-cross-headers-5.14.0-503.11.1.el9_5, kernel-tools-libs-devel-5.14.0-503.11.1.el9_5, libperf-5.14.0-503.11.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.11.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.11.1.el9_5, kernel-64k-devel-5.14.0-503.11.1.el9_5 +12
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.11.1.el9_5, kernel-5.14.0-503.11.1.el9_5, kernel-64k-5.14.0-503.11.1.el9_5 +30
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +11

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 9	Affected	No fix yet
Red Hat CodeReady Linux Builder (v. 9)	Fixed	RHSA-2024:9315
Red Hat Enterprise Linux AppStream (v. 9)	Fixed	RHSA-2024:9315
Red Hat Enterprise Linux BaseOS (v. 9)	Fixed	RHSA-2024:9315
Red Hat Enterprise Linux Real Time (v. 9)	Fixed	RHSA-2024:9315
Red Hat Enterprise Linux Real Time for NFV (v. 9)	Fixed	RHSA-2024:9315

Not affected: 4 products

Red Hat CodeReady Linux Builder (v. 9)
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux AppStream (v. 9)

Timeline

2026-10-02 Threatist record created from CVE-2024-35864
2026-10-03 Alias added: GHSA-rpmq-xq2g-32wx
2026-10-06 EPSS moved to the 50th–90th percentile

References

Patch 4

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-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
TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3

See all 15278 →

Sources

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