Read the docs
TI-2026-50608 Aliases CVE-2026-72329GHSA-5c72-mrqj-9c57

net/liquidio: drop cached VF pci_dev LUT

Priority MEDIUM 41Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 4 fixed, 1 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: net/liquidio: drop cached VF pci_dev LUT The PF SR-IOV enable path caches VF pci_dev pointers in dpiring_to_vfpcidev_lut[] by iterating with pci_get_device(). Those entries do not own a reference, because the iterator drops the previous device reference on each step. The cached pointer is then dereferenced later when handling OCTEON_VF_FLR_REQUEST. Replace the cached VF mapping with runtime lookup on the mailbox DPI ring: derive the VF index from q_no, resolve the VF via exported PCI IOV helpers, validate it with the PF pointer and VF ID, then issue pcie_flr() and drop the reference with pci_dev_put(). Remove the unused VF lookup table initialization and cleanup.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00194 9th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.191, 6.6.160, 6.12.114 +3Red Hat: 2 advisoriesRed Hat: 4 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux4.10 and later6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.1.5, 7.2Patch availableCNA
  • Linux VendorLinux Affected 4.10 and later Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.1.5, 7.2 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

  • Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.18.57, 7.1.5, 7.2

Red Hat 2 advisories

  • RHSA-2026:74133 Released 2026-09-30 · Red Hat rating Moderate
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.170.1.el8_10, kernel-4.18.0-553.170.1.el8_10, kernel-abi-stablelists-4.18.0-553.170.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.170.1.el8_10
  • RHSA-2026:74132 Released 2026-09-30 · Red Hat rating Moderate
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.170.1.rt7.511.el8_10, kernel-rt-core-4.18.0-553.170.1.rt7.511.el8_10, kernel-rt-debug-4.18.0-553.170.1.rt7.511.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.170.1.rt7.511.el8_10, kernel-rt-core-4.18.0-553.170.1.rt7.511.el8_10, kernel-rt-debug-4.18.0-553.170.1.rt7.511.el8_10 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:74133
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:74133
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:74132
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:74132
Not affected: 3 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-72329
  2. 2026-10-03 Alias added: GHSA-5c72-mrqj-9c57
  3. 2026-10-16 Fix available: Linux/Linux@08ff33dce6f91510bb296a753a232db0ca3fd3d8, Linux/[email protected] · CNA
  4. 2026-10-16 1 new reference · CNA
  5. 2026-10-16 CISA SSVC decision points changed
  6. 2026-10-16 Priority changed: LOW → MEDIUM
  7. 2026-10-21 Fix available: Linux/Linux@1cf5c6a80adc31456f3e93b2922a2446fd63e2c4, Linux/[email protected], Linux/[email protected] +1 · CNA
  8. 2026-10-21 2 new references · CNA
  9. 2026-10-26 CVSS score changed · Red Hat
  10. 2026-10-30 Fix available: Linux/Linux@4ec87796fadf5a631ee6513c258c0e3d9ca62f79, Linux/[email protected] · CNA
  11. 2026-10-30 1 new reference · CNA

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 21741 →

Sources

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