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TI-2021-21968 Aliases CVE-2021-47310GHSA-589w-2j5c-px7j

net: ti: fix UAF in tlan_remove_one

Priority LOW 34CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 9 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: net: ti: fix UAF in tlan_remove_one priv is netdev private data and it cannot be used after free_netdev() call. Using priv after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.4.277, 4.9.277, 4.14.241 +5Red Hat: 4 advisoriesRed Hat: 9 fixed, 1 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
LinuxLinux3.10 and later4.4.277, 4.9.277, 4.14.241, 4.19.199, 5.4.135, 5.10.53, 5.13.5, 5.14Patch availableCNA
  • Linux VendorLinux Affected 3.10 and later Fixed in 4.4.277, 4.9.277, 4.14.241, 4.19.199, 5.4.135, 5.10.53, 5.13.5, 5.14 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*3.10 to before 4.4.277; 4.5 to before 4.9.277; 4.10 to before 4.14.241; 4.15 to before 4.19.199; 4.20 to before 5.4.135; 5.5 to before 5.10.53; 5.11 to before 5.13.5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*5.14 rc1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.10 to before 4.4.277; 4.5 to before 4.9.277; 4.10 to before 4.14.241; 4.15 to before 4.19.199; 4.20 to before 5.4.135; 5.5 to before 5.10.53; 5.11 to before 5.13.5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:* Versions 5.14 rc1 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.4.277, 4.9.277, 4.14.241, 4.19.199, 5.4.135, 5.10.53, 5.13.5, 5.14

Red Hat 4 advisories

  • RHSA-2024:4740 Released 2024-07-23 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.64.1.el8_8
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.64.1.el8_8, kernel-4.18.0-477.64.1.el8_8, kernel-abi-stablelists-4.18.0-477.64.1.el8_8 +19
  • RHSA-2024:4447 Released 2024-07-10 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.111.1.el8_6, kernel-4.18.0-372.111.1.el8_6, kernel-abi-stablelists-4.18.0-372.111.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.111.1.el8_6, kernel-4.18.0-372.111.1.el8_6, kernel-abi-stablelists-4.18.0-372.111.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.111.1.el8_6, kernel-4.18.0-372.111.1.el8_6, kernel-abi-stablelists-4.18.0-372.111.1.el8_6 +14
  • RHSA-2024:4352 Released 2024-07-08 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-4.18.0-553.8.1.rt7.349.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-4.18.0-553.8.1.rt7.349.el8_10 +7
Show 1 more Red Hat advisories
  • RHSA-2024:4211 Released 2024-07-02 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.8.1.el8_10, kernel-4.18.0-553.8.1.el8_10, kernel-abi-stablelists-4.18.0-553.8.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.8.1.el8_10

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder EUS (v.8.8)Fixed RHSA-2024:4740
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2024:4211
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2024:4447
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2024:4447
Red Hat Enterprise Linux BaseOS EUS (v.8.8)Fixed RHSA-2024:4740
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2024:4447
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2024:4211
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2024:4352
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2024:4352
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux BaseOS (v. 8)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-47310
  2. 2026-10-03 Alias added: GHSA-589w-2j5c-px7j

References

Patch 8

  • 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