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TI-2020-17320 Aliases CVE-2020-28588GHSA-xxv6-ggg8-68mq

Incorrect numeric conversion in Linux Kernel

Priority LOW 27CWE-681Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents.

Why it matters now

EPSS 0.011 65th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—Linux KernelLinux Kernel v5.10-rc4,Linux Kernel v5.4.66,Linux Kernel v5.9.8—No fix listedCNA
  • Linux Kernel Vendor— Affected Linux Kernel v5.10-rc4,Linux Kernel v5.4.66,Linux Kernel v5.9.8 Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:5.4.66:*:*:*:*:*:*:*5.4.66VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.8:*:*:*:*:*:*:*5.9.8VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:*5.10 rc4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:5.4.66:*:*:*:*:*:*:* Versions 5.4.66 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.8:*:*:*:*:*:*:* Versions 5.9.8 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:* Versions 5.10 rc4 Vulnerable ·Linux

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

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

Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-28588
  2. 2026-10-03 Alias added: GHSA-xxv6-ggg8-68mq

References

Exploit 1

  • 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