TI-2026-18644 Aliases CVE-2026-23207 GHSA-5xf5-gq7p-jfx7

spi: tegra210-quad: Protect curr_xfer check in IRQ handler

LOW 21CWE-362Published 2026-02-14 · Updated 2026-11-05

Key facts

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

Attack profile from CVSS 3.1 · NVD. 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: spi: tegra210-quad: Protect curr_xfer check in IRQ handler Now that all other accesses to curr_xfer are done under the lock, protect the curr_xfer NULL check in tegra_qspi_isr_thread() with the spinlock. Without this protection, the following race can occur: CPU0 (ISR thread) CPU1 (timeout path) ---------------- ------------------- if (!tqspi->curr_xfer) // sees non-NULL spin_lock() tqspi->curr_xfer = NULL spin_unlock() handle_*_xfer() spin_lock() t = tqspi->curr_xfer // NULL! ... t->len ... // NULL dereference! With this patch, all curr_xfer accesses are now properly synchronized. Although all accesses to curr_xfer are done under the lock, in tegra_qspi_isr_thread() it checks for NULL, releases the lock and reacquires it later in handle_cpu_based_xfer()/handle_dma_based_xfer(). There is a potential for an update in between, which could cause a NULL pointer dereference. To handle this, add a NULL check inside the handlers after acquiring the lock. This ensures that if the timeout path has already cleared curr_xfer, the handler will safely return without dereferencing the NULL pointer.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00135 3rd percentileScored 2026-11-07

Fix Partial Linux (Linux): 5.16, 6.18, 6.1.191 +3Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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	5.15.198 to before 5.16; 6.17.13 to before 6.18	5.16, 6.18	Patch available	CNA
Linux	Linux	6.1.160 to before 6.1.191; 6.6.120 to before 6.6.160; 6.12.63 to before 6.12.80; 6.18.2 to before 6.18.10	6.1.191, 6.6.160, 6.12.80, 6.18.10	Patch available	CNA

Linux VendorLinux Affected 5.15.198 to before 5.16; 6.17.13 to before 6.18 Fixed in 5.16, 6.18 Patch available CNA
Linux VendorLinux Affected 6.1.160 to before 6.1.191; 6.6.120 to before 6.6.160; 6.12.63 to before 6.12.80; 6.18.2 to before 6.18.10 Fixed in 6.1.191, 6.6.160, 6.12.80, 6.18.10 Patch available CNA

CPE configurations NVD · 9

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	5.15.198 to before 5.16; 6.1.160 to before 6.2; 6.6.120 to before 6.7; 6.12.63 to before 6.13; 6.17.13 to before 6.18; 6.18.2 to before 6.18.10	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc1::::::	6.19 rc1	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc2::::::	6.19 rc2	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc3::::::	6.19 rc3	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc4::::::	6.19 rc4	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc5::::::	6.19 rc5	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc6::::::	6.19 rc6	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc7::::::	6.19 rc7	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc8::::::	6.19 rc8	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15.198 to before 5.16; 6.1.160 to before 6.2; 6.6.120 to before 6.7; 6.12.63 to before 6.13; 6.17.13 to before 6.18; 6.18.2 to before 6.18.10 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:* Versions 6.19 rc1 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:* Versions 6.19 rc2 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:* Versions 6.19 rc3 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:* Versions 6.19 rc4 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:* Versions 6.19 rc5 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:* Versions 6.19 rc6 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:* Versions 6.19 rc7 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:* Versions 6.19 rc8 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 5.16, 6.18
Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.80, 6.18.10

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred

Not affected: 3 products

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8

Timeline

2026-10-02 Threatist record created from CVE-2026-23207
2026-10-03 Alias added: GHSA-5xf5-gq7p-jfx7
2026-10-21 Fix available: Linux/Linux@513587caec66b67243027f26867ad3512f06744f, Linux/[email protected] · CNA
2026-10-21 1 new reference · CNA
2026-10-30 Fix available: Linux/[email protected], Linux/Linux@8261fa3da6e9001be95a54b857df9759e9098d2f · CNA
2026-10-30 1 new reference · CNA
2026-11-05 CISA SSVC decision points changed

References

Patch 2

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-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

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