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TI-2026-31487 Aliases CVE-2026-43308GHSA-mjx9-cr34-jhff

btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()

Priority LOW 24Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref() There is no need to BUG(), we can just return an error and log an error message.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00123 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.191, 6.6.160, 6.12.114 +3Red Hat: 3 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

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.31 and later6.1.191, 6.6.160, 6.12.114, 6.18.57, 6.19.6, 7.0Patch availableCNA
  • Linux VendorLinux Affected 2.6.31 and later Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.57, 6.19.6, 7.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.31 to before 6.19.6VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.31 to before 6.19.6 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.57, 6.19.6, 7.0

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Not affected: 2 products
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-43308
  2. 2026-10-03 Alias added: GHSA-mjx9-cr34-jhff
  3. 2026-10-16 Fix available: Linux/[email protected], Linux/Linux@6ad4caadc6343c3d7987bf3211f15d66135c4c42 · CNA
  4. 2026-10-16 1 new reference · CNA
  5. 2026-10-21 Fix available: Linux/Linux@0e77f1c8ebf5b1f858b5ac613baceb79919d6d3f, Linux/[email protected], Linux/[email protected] +1 · CNA
  6. 2026-10-21 2 new references · CNA
  7. 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@c614b64bee2c3cbb0c80dd3a9ee492c74364e275 · CNA
  8. 2026-10-30 1 new reference · CNA
  9. 2026-11-06 CISA SSVC decision points changed

References

Patch 2

Other 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

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