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TI-2026-68244 Aliases CVE-2026-98353GHSA-c26j-r98f-9j66

Deadlock in Linux kernel RDMA erdma QP and CQ table lookups

Priority LOW 22Published · Updated

Key facts

Attack vector
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Privileges required
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User interaction
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Attack complexity
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Impact type
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Confidentiality · integrity · availability
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Fix status
Fixed

No CVSS vector from any source. Fix status from CNA.

Summary

The Linux kernel RDMA erdma driver can deadlock because locked QP and CQ lookups from EQ interrupts can run while create-path XArray updates hold the plain lock. If an interrupt arrives during the create path, the lookup spins forever trying to acquire the lock that the interrupted code already holds. The fix makes all QP and CQ create-path updates use IRQ-safe XArray helpers and initializes both arrays with IRQ-safe locking.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Use IRQ-safe XArray helpers for QP and CQ tables Locked QP and CQ lookups from EQ interrupts can deadlock with create-path XArray updates. If an interrupt arrives while the create path holds the plain xa_lock, the lookup spins forever trying to acquire the same lock. Use IRQ-safe XArray helpers for all QP and CQ create-path updates, including the GSI QP store and error paths. Initialize both arrays with XA_FLAGS_LOCK_IRQ so sleeping allocations preserve interrupt state.

Why it matters now

EPSS 0.00154 4th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.2, 6.7, 6.13 +2

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.1.188 to before 6.2; 6.6.157 to before 6.7; 6.12.110 to before 6.13; 6.1.191 to before 6.2; 6.6.160 to before 6.76.2, 6.7, 6.13Patch availableCNA
LinuxLinux6.18.52 to before 6.18.58; 7.2.6 to before 7.2.86.18.58, 7.2.8Patch availableCNA
  • Linux VendorLinux Affected 6.1.188 to before 6.2; 6.6.157 to before 6.7; 6.12.110 to before 6.13; 6.1.191 to before 6.2; 6.6.160 to before 6.7 Fixed in 6.2, 6.7, 6.13 Patch available CNA
  • Linux VendorLinux Affected 6.18.52 to before 6.18.58; 7.2.6 to before 7.2.8 Fixed in 6.18.58, 7.2.8 Patch available CNA

CPE names Threatist (inferred) · 1

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

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

Remediation

The fixed Linux kernel versions are 6.2, 6.7, 6.13, 6.18.58 and 7.2.8.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Linux (Linux) Fixed in 6.2, 6.7, 6.13
  • Fix · CNA Linux (Linux) Fixed in 6.18.58, 7.2.8

Vendor assessments

Red Hat

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

Not affected: 7 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • 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

  1. 2026-10-06 Threatist record created from CVE-2026-98353
  2. 2026-10-06 Alias added: GHSA-c26j-r98f-9j66
  3. 2026-10-07 Affected versions changed · Red Hat
  4. 2026-10-07 CVSS score added · Red Hat
  5. 2026-10-19 Affected versions changed · CNA
  6. 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@e32aa1d85126e6d5ef6efd594ced3f75178886ce · CNA
  7. 2026-10-21 1 new reference · CNA
  8. 2026-10-30 Affected versions changed · CNA
  9. 2026-11-06 Affected versions changed · Red Hat

References

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-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 21741 →

Sources

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