TI-2026-61342 Aliases CVE-2026-90300 GHSA-ghq7-v2f8-82jr

bpf: Clear buf on error in __bpf_get_task_stack

LOW 22Published 2026-09-17 · Updated 2026-10-30

Key facts

Attack vector: —
Privileges required: —
User interaction: —
Attack complexity: —
Impact type: —
Confidentiality · integrity · availability: —
Fix status: Partial Red Hat: 5 without a fix

No CVSS vector from any source. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Clear buf on error in __bpf_get_task_stack Both bpf_get_task_stack and bpf_get_task_stack_sleepable helpers that use __bpf_get_task_stack have buf defined as ARG_PTR_TO_UNINIT_MEM argument and we should initialize the buf on every return path. Adding missing buf memset for __bpf_get_task_stack fail paths. This provides deterministic buffer contents, which is useful when the buffer is used directly as a map key.

Why it matters now

EPSS 0.00206 10th percentileScored 2026-11-07

Fix Partial Linux (Linux): 5.11, 5.12, 6.1.191 +5Red Hat: 5 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	5.10.30 to before 5.11; 5.11.14 to before 5.12; 5.10.96 to before 5.11	5.11, 5.12	Patch available	CNA
Linux	Linux	5.12 and later	6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.2.6, 7.3	Patch available	CNA

Linux VendorLinux Affected 5.10.30 to before 5.11; 5.11.14 to before 5.12; 5.10.96 to before 5.11 Fixed in 5.11, 5.12 Patch available CNA
Linux VendorLinux Affected 5.12 and later Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.2.6, 7.3 Patch available CNA

CPE names Threatist (inferred) · 1

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

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	—	—	Linux

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

Remediation

Fix · CNA Linux (Linux) Fixed in 5.11, 5.12
Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.2.6, 7.3

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 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat OpenShift Container Platform 4	Affected	No fix yet: Fix deferred
Red Hat OpenShift Container Platform 5	Affected	No fix yet: Fix deferred

Not affected: 2 products

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7

Timeline

2026-10-02 Threatist record created from CVE-2026-90300
2026-10-03 Alias added: GHSA-ghq7-v2f8-82jr
2026-10-15 Affected versions changed · Red Hat
2026-10-15 CVSS score added · Red Hat
2026-10-16 Fix available: Linux/Linux@1f0f61573ba4cb899105b5cef65be3ca02205f93, Linux/[email protected] · CNA
2026-10-16 1 new reference · CNA
2026-10-19 Fix available: Linux/[email protected] · CNA
2026-10-21 Fix available: Linux/Linux@4acc761b4e3feca1eb648d21fc4d665b23c5372d, Linux/[email protected], Linux/[email protected] +1 · CNA
2026-10-21 2 new references · CNA
2026-10-30 Fix available: Linux/Linux@5c4c57a277a87ed235183d03b671d346f5101f62, Linux/[email protected] · CNA
2026-10-30 1 new reference · CNA
2026-11-06 Affected versions changed · Red Hat

References

Other 6

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 21727 →

Sources

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