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TI-2023-01127 Aliases CVE-2023-1192GHSA-r277-j8m2-3x97

Use-after-free in smb2_is_status_io_timeout()

Priority LOW 31CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 34 fixed, 1 without a fix

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

Summary

A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01104 65th percentileScored 2026-11-07
Fix Partial Red Hat: 13 advisoriesRed Hat: 34 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
—kernel——No fix listedCNA
Red HatRed Hat Enterprise Linux 6——Not affectedCNA
Red HatRed Hat Enterprise Linux 7——Not affectedCNA
Red HatRed Hat Enterprise Linux 7——Not affectedCNA
Red HatRed Hat Enterprise Linux 8——No fix listedCNA
Red HatRed Hat Enterprise Linux 8——No fix listedCNA
Red HatRed Hat Enterprise Linux 9——No fix listedCNA
Red HatRed Hat Enterprise Linux 9——No fix listedCNA
FedoraFedora——No fix listedCNA
  • kernel Vendor— Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Fedora VendorFedora Affected — Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 6.4VulnerableLinux
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*9.0VulnerableRed Hat
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 6.4 Vulnerable ·Linux
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat

Remediation

Red Hat 13 advisories

  • RHSA-2024:2006 Released 2024-04-23 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.133.1.el8_2, kernel-4.18.0-193.133.1.el8_2, kernel-abi-whitelists-4.18.0-193.133.1.el8_2 +14
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) bpftool-4.18.0-193.133.1.el8_2, kernel-4.18.0-193.133.1.el8_2, kernel-abi-whitelists-4.18.0-193.133.1.el8_2 +14
    • Red Hat Enterprise Linux BaseOS TUS (v. 8.2) bpftool-4.18.0-193.133.1.el8_2, kernel-4.18.0-193.133.1.el8_2, kernel-abi-whitelists-4.18.0-193.133.1.el8_2 +14
  • RHSA-2024:2008 Released 2024-04-23 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time TUS (v. 8.2) kernel-rt-4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-core-4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-debug-4.18.0-193.133.1.rt13.184.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) kernel-rt-4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-core-4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-debug-4.18.0-193.133.1.rt13.184.el8_2 +9
  • RHSA-2024:1306 Released 2024-03-13 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt-5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-core-5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-debug-5.14.0-70.93.1.rt21.165.el9_0 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt-5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-core-5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-debug-5.14.0-70.93.1.rt21.165.el9_0 +9
Show 10 more Red Hat advisories
  • RHSA-2024:1250 Released 2024-03-12 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-tools-libs-devel-5.14.0-70.93.2.el9_0
    • Red Hat Enterprise Linux AppStream EUS (v.9.0) kernel-debug-devel-5.14.0-70.93.2.el9_0, kernel-debug-devel-matched-5.14.0-70.93.2.el9_0, kernel-devel-5.14.0-70.93.2.el9_0 +5
    • Red Hat Enterprise Linux BaseOS EUS (v.9.0) bpftool-5.14.0-70.93.2.el9_0, kernel-5.14.0-70.93.2.el9_0, kernel-abi-stablelists-5.14.0-70.93.2.el9_0 +14
  • RHSA-2024:0562 Released 2024-01-30 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.120.1.el8_4, kernel-4.18.0-305.120.1.el8_4, kernel-abi-stablelists-4.18.0-305.120.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.4) bpftool-4.18.0-305.120.1.el8_4, kernel-4.18.0-305.120.1.el8_4, kernel-abi-stablelists-4.18.0-305.120.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.4) bpftool-4.18.0-305.120.1.el8_4, kernel-4.18.0-305.120.1.el8_4, kernel-abi-stablelists-4.18.0-305.120.1.el8_4 +14
  • RHSA-2024:0563 Released 2024-01-30 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux NFV TUS (v.8.4) kernel-rt-4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-core-4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-debug-4.18.0-305.120.1.rt7.196.el8_4 +9
    • Red Hat Enterprise Linux RT TUS (v.8.4) kernel-rt-4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-core-4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-debug-4.18.0-305.120.1.rt7.196.el8_4 +7
  • RHSA-2024:0448 Released 2024-01-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.48.1.el9_2
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.48.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.48.1.el9_2, kernel-64k-devel-5.14.0-284.48.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.48.1.el9_2, kernel-5.14.0-284.48.1.el9_2, kernel-64k-5.14.0-284.48.1.el9_2 +29
  • RHSA-2024:0439 Released 2024-01-25 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-core-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-debug-5.14.0-284.48.1.rt14.333.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-core-5.14.0-284.48.1.rt14.333.el9_2, kernel-rt-debug-5.14.0-284.48.1.rt14.333.el9_2 +11
  • RHSA-2024:0412 Released 2024-01-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-tools-libs-devel-4.18.0-372.87.1.el8_6
    • Red Hat Enterprise Linux BaseOS EUS (v.8.6) bpftool-4.18.0-372.87.1.el8_6, kernel-4.18.0-372.87.1.el8_6, kernel-abi-stablelists-4.18.0-372.87.1.el8_6 +19
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 kernel-devel-4.18.0-372.87.1.el8_6, perf-4.18.0-372.87.1.el8_6
  • RHSA-2023:7749 Released 2023-12-12 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-362.13.1.el9_3, libperf-5.14.0-362.13.1.el9_3
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-362.13.1.el9_3, kernel-64k-debug-devel-matched-5.14.0-362.13.1.el9_3, kernel-64k-devel-5.14.0-362.13.1.el9_3 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.2.0-362.13.1.el9_3, kernel-5.14.0-362.13.1.el9_3, kernel-64k-5.14.0-362.13.1.el9_3 +29
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-362.13.1.el9_3, kernel-rt-core-5.14.0-362.13.1.el9_3, kernel-rt-debug-5.14.0-362.13.1.el9_3 +9
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-362.13.1.el9_3, kernel-rt-core-5.14.0-362.13.1.el9_3, kernel-rt-debug-5.14.0-362.13.1.el9_3 +11
  • RHSA-2023:7549 Released 2023-11-28 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-513.9.1.el8_9
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-513.9.1.el8_9, kernel-4.18.0-513.9.1.el8_9, kernel-abi-stablelists-4.18.0-513.9.1.el8_9 +19
  • RHSA-2023:7548 Released 2023-11-28 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-core-4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-debug-4.18.0-513.9.1.rt7.311.el8_9 +9
    • Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt-4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-core-4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-debug-4.18.0-513.9.1.rt7.311.el8_9 +7
  • RHSA-2023:7539 Released 2023-11-28 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.36.1.el8_8
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.36.1.el8_8, kernel-4.18.0-477.36.1.el8_8, kernel-abi-stablelists-4.18.0-477.36.1.el8_8 +19

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2023:7549
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2023:7749
Red Hat CodeReady Linux Builder EUS (v.8.6)Fixed RHSA-2024:0412
Red Hat CodeReady Linux Builder EUS (v.8.8)Fixed RHSA-2023:7539
Red Hat CodeReady Linux Builder EUS (v.9.0)Fixed RHSA-2024:1250
Red Hat CodeReady Linux Builder EUS (v.9.2)Fixed RHSA-2024:0448
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:7749
Red Hat Enterprise Linux AppStream EUS (v.9.0)Fixed RHSA-2024:1250
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:0448
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2023:7549
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2023:7749
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2024:2006
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2024:0562
Red Hat Enterprise Linux BaseOS E4S (v. 8.2)Fixed RHSA-2024:2006
Red Hat Enterprise Linux BaseOS E4S (v.8.4)Fixed RHSA-2024:0562
Red Hat Enterprise Linux BaseOS EUS (v.8.6)Fixed RHSA-2024:0412
Red Hat Enterprise Linux BaseOS EUS (v.8.8)Fixed RHSA-2023:7539
Red Hat Enterprise Linux BaseOS EUS (v.9.0)Fixed RHSA-2024:1250
Red Hat Enterprise Linux BaseOS EUS (v.9.2)Fixed RHSA-2024:0448
Red Hat Enterprise Linux BaseOS TUS (v. 8.2)Fixed RHSA-2024:2006
Red Hat Enterprise Linux BaseOS TUS (v.8.4)Fixed RHSA-2024:0562
Red Hat Enterprise Linux NFV TUS (v.8.4)Fixed RHSA-2024:0563
Red Hat Enterprise Linux RT TUS (v.8.4)Fixed RHSA-2024:0563
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2023:7749
Red Hat Enterprise Linux Real Time EUS (v.9.0)Fixed RHSA-2024:1306
Red Hat Enterprise Linux Real Time EUS (v.9.2)Fixed RHSA-2024:0439
Red Hat Enterprise Linux Real Time TUS (v. 8.2)Fixed RHSA-2024:2008
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2023:7548
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2023:7749
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)Fixed RHSA-2024:1306
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2)Fixed RHSA-2024:0439
Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2)Fixed RHSA-2024:2008
Red Hat Enterprise Linux for Real Time (v. 8)Fixed RHSA-2023:7548
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2024:0412
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux AppStream EUS (v.9.2)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-1192
  2. 2026-10-03 Alias added: GHSA-r277-j8m2-3x97

References

Advisory 1

Other 2

  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-10530 Code injection in [UNKNOWN] RichFaces KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
See all 1955 →

Sources

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