TI-2026-64480 Aliases CVE-2026-98082 GHSA-572v-238r-mqg6

btrfs: fix the possible bioc_list memory leak during error

LOW 24CWE-401Published 2026-09-25 · Updated 2026-10-19

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
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-401.

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix the possible bioc_list memory leak during error There are two possible ways to leak bioc memory on btrfs_ordered_extent::bioc_list: - An error occurred for btrfs_insert_one_raid_extent() Then the function btrfs_insert_raid_extent() immediately return without freeing any bioc in the bioc_list. - An ordered extent hit an IO error In that case the ordered extent will have BTRFS_ORDERED_IOERR set, and skip the call on btrfs_insert_raid_extent() completely. Fix the problem by: - Introduce a new helper, btrfs_cleanup_ordered_bioc_list() Which will remove all bioc from the bioc_list, and release the bioc. - Call the above helper for btrfs_insert_raid_extent() So that the cleanup helper is always called no matter what. - Call the above helper for btrfs_finish_one_ordered() This is called just before the final release on the ordered extent. This was reported by Sashiko when reviewing another patch.

Why it matters now

EPSS 0.00122 1st percentileScored 2026-11-07

Fix Partial Linux (Linux): 6.6.158, 6.12.111, 6.18.53 +2Red Hat: 2 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	6.6.130 to before 6.6.158	6.6.158	Patch available	CNA
Linux	Linux	6.7 and later	6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3	Patch available	CNA

Linux VendorLinux Affected 6.6.130 to before 6.6.158 Fixed in 6.6.158 Patch available CNA
Linux VendorLinux Affected 6.7 and later Fixed in 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	6.6.130 to before 6.6.158; 6.7 to before 6.12.111; 6.13 to before 6.18.53; 6.19 to before 7.2.7	Vulnerable	Linux
cpe:2.3:o:linux:linux_kernel:7.3:rc1::::::	7.3 rc1	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.6.130 to before 6.6.158; 6.7 to before 6.12.111; 6.13 to before 6.18.53; 6.19 to before 7.2.7 Vulnerable ·Linux
cpe:2.3:o:linux:linux_kernel:7.3:rc1:*:*:*:*:*:* Versions 7.3 rc1 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 6.6.158
Fix · CNA Linux (Linux) Fixed in 6.6.158, 6.12.111, 6.18.53, 7.2.7, 7.3

Vendor assessments

Red Hat

Red Hat rating: Low. 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 6	Affected	No fix planned: Out of support scope

Not affected: 5 products

Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat OpenShift Container Platform 4
Red Hat OpenShift Container Platform 5

Timeline

2026-10-02 Threatist record created from CVE-2026-98082
2026-10-03 Alias added: GHSA-572v-238r-mqg6
2026-10-03 Fix available: Linux/[email protected], Linux/Linux@d043c43d2b4ebcd75ee7f907948ef2847306d6b2 · CNA
2026-10-03 1 new reference · CNA
2026-10-06 CVSS score added · NVD
2026-10-06 Weakness changed · NVD
2026-10-19 Fix available: Linux/[email protected] · CNA
2026-11-07 Affected versions changed · Red Hat

References

Patch 5

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