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TI-2023-28967 Aliases CVE-2023-52628GHSA-6r42-gm3x-9xx3

netfilter: nftables: exthdr: fix 4-byte stack OOB write

Priority LOW 35CWE-787Published · 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: 15 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination array which leads to stack corruption. This construct is necessary to clean the remainder of the register in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does. The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added. Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00667 52nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.316, 5.4.279, 5.10.198 +4Red Hat: 5 advisoriesRed Hat: 15 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
LinuxLinux4.1 and later4.19.316, 5.4.279, 5.10.198, 5.15.132, 6.1.54, 6.5.4, 6.6Patch availableCNA
  • Linux VendorLinux Affected 4.1 and later Fixed in 4.19.316, 5.4.279, 5.10.198, 5.15.132, 6.1.54, 6.5.4, 6.6 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.1 to before 5.10.198; 5.11 to before 5.15.132; 5.16 to before 6.1.54; 6.2 to before 6.5.4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.1 to before 5.10.198; 5.11 to before 5.15.132; 5.16 to before 6.1.54; 6.2 to before 6.5.4 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.19.316, 5.4.279, 5.10.198, 5.15.132, 6.1.54, 6.5.4, 6.6

Red Hat 5 advisories

  • RHSA-2024:3421 Released 2024-05-28 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-tools-libs-devel-5.14.0-70.101.1.el9_0
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) kernel-debug-devel-5.14.0-70.101.1.el9_0, kernel-debug-devel-matched-5.14.0-70.101.1.el9_0, kernel-devel-5.14.0-70.101.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) bpftool-5.14.0-70.101.1.el9_0, kernel-5.14.0-70.101.1.el9_0, kernel-abi-stablelists-5.14.0-70.101.1.el9_0 +14
  • RHSA-2024:3414 Released 2024-05-28 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt-5.14.0-70.101.1.rt21.173.el9_0, kernel-rt-core-5.14.0-70.101.1.rt21.173.el9_0, kernel-rt-debug-5.14.0-70.101.1.rt21.173.el9_0 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt-5.14.0-70.101.1.rt21.173.el9_0, kernel-rt-core-5.14.0-70.101.1.rt21.173.el9_0, kernel-rt-debug-5.14.0-70.101.1.rt21.173.el9_0 +9
  • RHSA-2024:2845 Released 2024-05-15 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.66.1.el9_2
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.66.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.66.1.el9_2, kernel-64k-devel-5.14.0-284.66.1.el9_2 +9
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.66.1.el9_2, kernel-5.14.0-284.66.1.el9_2, kernel-64k-5.14.0-284.66.1.el9_2 +29
Show 2 more Red Hat advisories
  • RHSA-2024:2846 Released 2024-05-15 · Red Hat rating Moderate
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.66.1.rt14.351.el9_2, kernel-rt-core-5.14.0-284.66.1.rt14.351.el9_2, kernel-rt-debug-5.14.0-284.66.1.rt14.351.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.66.1.rt14.351.el9_2, kernel-rt-core-5.14.0-284.66.1.rt14.351.el9_2, kernel-rt-debug-5.14.0-284.66.1.rt14.351.el9_2 +11
  • RHSA-2024:2394 Released 2024-04-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.13.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.13.1.el9_4, kernel-64k-devel-5.14.0-427.13.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.13.1.el9_4, kernel-5.14.0-427.13.1.el9_4, kernel-64k-5.14.0-427.13.1.el9_4 +29
    • Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.13.1.el9_4, libperf-5.14.0-427.13.1.el9_4
    • Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.13.1.el9_4, kernel-rt-core-5.14.0-427.13.1.el9_4, kernel-rt-debug-5.14.0-427.13.1.el9_4 +11
    • Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.13.1.el9_4, kernel-rt-core-5.14.0-427.13.1.el9_4, kernel-rt-debug-5.14.0-427.13.1.el9_4 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.0)Fixed RHSA-2024:3421
Red Hat CodeReady Linux Builder EUS (v.9.2)Fixed RHSA-2024:2845
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2024:3421
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:2845
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux BaseOS EUS (v.9.0)Fixed RHSA-2024:3421
Red Hat Enterprise Linux BaseOS EUS (v.9.2)Fixed RHSA-2024:2845
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux NFV (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux RT (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux Real Time EUS (v.9.0)Fixed RHSA-2024:3414
Red Hat Enterprise Linux Real Time EUS (v.9.2)Fixed RHSA-2024:2846
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)Fixed RHSA-2024:3414
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2)Fixed RHSA-2024:2846
Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux AppStream EUS (v.9.2)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-52628
  2. 2026-10-03 Alias added: GHSA-6r42-gm3x-9xx3

References

Patch 7

  • 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