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TI-2025-26515 Aliases CVE-2025-39841GHSA-j8p6-qx4r-877v

scsi: lpfc: Fix buffer free/clear order in deferred receive path

Priority MEDIUM 43CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 35 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: scsi: lpfc: Fix buffer free/clear order in deferred receive path Fix a use-after-free window by correcting the buffer release sequence in the deferred receive path. The code freed the RQ buffer first and only then cleared the context pointer under the lock. Concurrent paths (e.g., ABTS and the repost path) also inspect and release the same pointer under the lock, so the old order could lead to double-free/UAF. Note that the repost path already uses the correct pattern: detach the pointer under the lock, then free it after dropping the lock. The deferred path should do the same.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00481 41st percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.4.299, 5.10.243, 5.15.192 +5Red Hat: 15 advisoriesRed Hat: 35 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
LinuxLinux5.1 and later5.4.299, 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.46, 6.16.6, 6.17Patch availableCNA
  • Linux VendorLinux Affected 5.1 and later Fixed in 5.4.299, 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.46, 6.16.6, 6.17 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.1 to before 5.4.299; 5.5 to before 5.10.243; 5.11 to before 5.15.192; 5.16 to before 6.1.151; 6.2 to before 6.6.105; 6.7 to before 6.12.46; 6.13 to before 6.16.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*6.17 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*6.17 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*6.17 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*6.17 rc4VulnerableLinux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.1 to before 5.4.299; 5.5 to before 5.10.243; 5.11 to before 5.15.192; 5.16 to before 6.1.151; 6.2 to before 6.6.105; 6.7 to before 6.12.46; 6.13 to before 6.16.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* Versions 6.17 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* Versions 6.17 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* Versions 6.17 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* Versions 6.17 rc4 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.4.299, 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.46, 6.16.6, 6.17

Red Hat 15 advisories

  • RHSA-2025:23463 Released 2025-12-17 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.182.1.el8_4, kernel-4.18.0-305.182.1.el8_4, kernel-abi-stablelists-4.18.0-305.182.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.182.1.el8_4, kernel-4.18.0-305.182.1.el8_4, kernel-abi-stablelists-4.18.0-305.182.1.el8_4 +14
  • RHSA-2025:23445 Released 2025-12-17 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.178.1.el8_2, kernel-4.18.0-193.178.1.el8_2, kernel-abi-whitelists-4.18.0-193.178.1.el8_2 +14
  • RHSA-2025:22996 Released 2025-12-10 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.149.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.149.1.el9_2, kernel-64k-devel-5.14.0-284.149.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.149.1.el9_2, kernel-5.14.0-284.149.1.el9_2, kernel-64k-5.14.0-284.149.1.el9_2 +29
Show 12 more Red Hat advisories
  • RHSA-2025:22999 Released 2025-12-10 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.157.1.el9_0, kernel-debug-devel-matched-5.14.0-70.157.1.el9_0, kernel-devel-5.14.0-70.157.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.157.1.el9_0, kernel-5.14.0-70.157.1.el9_0, kernel-abi-stablelists-5.14.0-70.157.1.el9_0 +14
  • RHSA-2025:22995 Released 2025-12-10 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.149.1.rt14.434.el9_2, kernel-rt-core-5.14.0-284.149.1.rt14.434.el9_2, kernel-rt-debug-5.14.0-284.149.1.rt14.434.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.149.1.rt14.434.el9_2, kernel-rt-core-5.14.0-284.149.1.rt14.434.el9_2, kernel-rt-debug-5.14.0-284.149.1.rt14.434.el9_2 +11
  • RHSA-2025:22997 Released 2025-12-10 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.157.1.rt21.229.el9_0, kernel-rt-core-5.14.0-70.157.1.rt21.229.el9_0, kernel-rt-debug-5.14.0-70.157.1.rt21.229.el9_0 +9
    • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.157.1.rt21.229.el9_0, kernel-rt-core-5.14.0-70.157.1.rt21.229.el9_0, kernel-rt-debug-5.14.0-70.157.1.rt21.229.el9_0 +7
  • RHSA-2025:22661 Released 2025-12-03 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.102.1.el9_4, libperf-5.14.0-427.102.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.102.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.102.1.el9_4, kernel-64k-devel-5.14.0-427.102.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.102.1.el9_4, kernel-5.14.0-427.102.1.el9_4, kernel-64k-5.14.0-427.102.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.102.1.el9_4, kernel-rt-core-5.14.0-427.102.1.el9_4, kernel-rt-debug-5.14.0-427.102.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.102.1.el9_4, kernel-rt-core-5.14.0-427.102.1.el9_4, kernel-rt-debug-5.14.0-427.102.1.el9_4 +11
  • RHSA-2025:21118 Released 2025-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.9.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.9.1.el10_1, kernel-64k-devel-6.12.0-124.9.1.el10_1 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.9.1.el10_1, kernel-64k-6.12.0-124.9.1.el10_1, kernel-64k-core-6.12.0-124.9.1.el10_1 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.9.1.el10_1, libperf-6.12.0-124.9.1.el10_1
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.9.1.el10_1, kernel-rt-64k-6.12.0-124.9.1.el10_1, kernel-rt-64k-core-6.12.0-124.9.1.el10_1 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.9.1.el10_1, kernel-rt-core-6.12.0-124.9.1.el10_1, kernel-rt-debug-6.12.0-124.9.1.el10_1 +9
  • RHSA-2025:21112 Released 2025-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-611.7.1.el9_7, kernel-64k-debug-devel-matched-5.14.0-611.7.1.el9_7, kernel-64k-devel-5.14.0-611.7.1.el9_7 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-611.7.1.el9_7, kernel-64k-5.14.0-611.7.1.el9_7, kernel-64k-core-5.14.0-611.7.1.el9_7 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-611.7.1.el9_7, libperf-5.14.0-611.7.1.el9_7
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-611.7.1.el9_7, kernel-rt-64k-5.14.0-611.7.1.el9_7, kernel-rt-64k-core-5.14.0-611.7.1.el9_7 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-611.7.1.el9_7, kernel-rt-core-5.14.0-611.7.1.el9_7, kernel-rt-debug-5.14.0-611.7.1.el9_7 +9
  • RHSA-2025:21084 Released 2025-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.168.1.el8_6, kernel-4.18.0-372.168.1.el8_6, kernel-abi-stablelists-4.18.0-372.168.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.168.1.el8_6, kernel-4.18.0-372.168.1.el8_6, kernel-abi-stablelists-4.18.0-372.168.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.168.1.el8_6, kernel-4.18.0-372.168.1.el8_6, kernel-abi-stablelists-4.18.0-372.168.1.el8_6 +14
  • RHSA-2025:21083 Released 2025-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.118.1.el8_8, kernel-4.18.0-477.118.1.el8_8, kernel-abi-stablelists-4.18.0-477.118.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.118.1.el8_8, kernel-4.18.0-477.118.1.el8_8, kernel-abi-stablelists-4.18.0-477.118.1.el8_8 +14
  • RHSA-2025:19102 Released 2025-10-27 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.81.1.el8_10, kernel-4.18.0-553.81.1.el8_10, kernel-abi-stablelists-4.18.0-553.81.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.81.1.el8_10
  • RHSA-2025:19103 Released 2025-10-27 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.81.1.rt7.422.el8_10, kernel-rt-core-4.18.0-553.81.1.rt7.422.el8_10, kernel-rt-debug-4.18.0-553.81.1.rt7.422.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.81.1.rt7.422.el8_10, kernel-rt-core-4.18.0-553.81.1.rt7.422.el8_10, kernel-rt-debug-4.18.0-553.81.1.rt7.422.el8_10 +7
  • RHSA-2025:18318 Released 2025-10-20 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-55.40.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.40.1.el10_0, kernel-64k-devel-6.12.0-55.40.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-55.40.1.el10_0, kernel-64k-6.12.0-55.40.1.el10_0, kernel-64k-core-6.12.0-55.40.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-55.40.1.el10_0, libperf-6.12.0-55.40.1.el10_0
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-55.40.1.el10_0, kernel-rt-64k-6.12.0-55.40.1.el10_0, kernel-rt-64k-core-6.12.0-55.40.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-55.40.1.el10_0, kernel-rt-core-6.12.0-55.40.1.el10_0, kernel-rt-debug-6.12.0-55.40.1.el10_0 +11
  • RHSA-2025:18281 Released 2025-10-20 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.55.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.55.1.el9_6, kernel-64k-devel-5.14.0-570.55.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.55.1.el9_6, kernel-64k-5.14.0-570.55.1.el9_6, kernel-64k-core-5.14.0-570.55.1.el9_6 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.55.1.el9_6, libperf-5.14.0-570.55.1.el9_6
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.55.1.el9_6, kernel-rt-64k-5.14.0-570.55.1.el9_6, kernel-rt-64k-core-5.14.0-570.55.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.55.1.el9_6, kernel-rt-core-5.14.0-570.55.1.el9_6, kernel-rt-debug-5.14.0-570.55.1.el9_6 +11

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.9.4)Fixed RHSA-2025:22661
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:18318, RHSA-2025:21118
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:18281, RHSA-2025:21112
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2025:22999
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2025:22996
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:22661
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:18318, RHSA-2025:21118
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2025:19102
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:18281, RHSA-2025:21112
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2025:23445
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2025:23463
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2025:21084
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2025:21084
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2025:21083
Red Hat Enterprise Linux BaseOS E4S (v.9.0)Fixed RHSA-2025:22999
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2025:22996
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2025:22661
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2025:23463
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2025:21084
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2025:21083
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2025:19102
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:18318, RHSA-2025:21118
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:18281, RHSA-2025:21112
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2025:19103
Red Hat Enterprise Linux NFV E4S (v.9.0)Fixed RHSA-2025:22997
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2025:19103
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2025:18318, RHSA-2025:21118
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:18281, RHSA-2025:21112
Red Hat Enterprise Linux Real Time E4S (v.9.0)Fixed RHSA-2025:22997
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2025:22995
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2025:22661
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2025:18318, RHSA-2025:21118
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:18281, RHSA-2025:21112
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2025:22995
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2025:22661
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-39841
  2. 2026-10-03 Alias added: GHSA-j8p6-qx4r-877v

References

Patch 8

Advisory 2

  • 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