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TI-2025-26605 Aliases CVE-2025-39933GHSA-2vj6-wmm6-q722

smb: client: let recv_done verify data_offset, data_length and remaining_data_length

Priority MEDIUM 40Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · Low · High
Fix status
Partial Red Hat: 44 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: let recv_done verify data_offset, data_length and remaining_data_length This is inspired by the related server fixes.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00347 28th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.191, 6.6.160, 6.12.114 +2Red Hat: 14 advisoriesRed Hat: 44 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
LinuxLinux4.16 and later6.1.191, 6.6.160, 6.12.114, 6.16.9, 6.17Patch availableCNA
  • Linux VendorLinux Affected 4.16 and later Fixed in 6.1.191, 6.6.160, 6.12.114, 6.16.9, 6.17 Patch available CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.16 to before 6.16.9VulnerableLinux
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:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*6.17 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*6.17 rc6VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.16 to before 6.16.9 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:linux:linux_kernel:6.17:rc5:*:*:*:*:*:* Versions 6.17 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:* Versions 6.17 rc6 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.114, 6.16.9, 6.17

Red Hat 14 advisories

  • RHSA-2026:3375 Released 2026-02-25 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.167.1.rt21.239.el9_0, kernel-rt-core-5.14.0-70.167.1.rt21.239.el9_0, kernel-rt-debug-5.14.0-70.167.1.rt21.239.el9_0 +9
    • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.167.1.rt21.239.el9_0, kernel-rt-core-5.14.0-70.167.1.rt21.239.el9_0, kernel-rt-debug-5.14.0-70.167.1.rt21.239.el9_0 +7
  • RHSA-2026:3360 Released 2026-02-25 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.186.1.el8_4, kernel-4.18.0-305.186.1.el8_4, kernel-abi-stablelists-4.18.0-305.186.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.186.1.el8_4, kernel-4.18.0-305.186.1.el8_4, kernel-abi-stablelists-4.18.0-305.186.1.el8_4 +14
  • RHSA-2026:3358 Released 2026-02-25 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.158.1.rt14.443.el9_2, kernel-rt-core-5.14.0-284.158.1.rt14.443.el9_2, kernel-rt-debug-5.14.0-284.158.1.rt14.443.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.158.1.rt14.443.el9_2, kernel-rt-core-5.14.0-284.158.1.rt14.443.el9_2, kernel-rt-debug-5.14.0-284.158.1.rt14.443.el9_2 +11
Show 11 more Red Hat advisories
  • RHSA-2026:3293 Released 2026-02-25 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.167.1.el9_0, kernel-debug-devel-matched-5.14.0-70.167.1.el9_0, kernel-devel-5.14.0-70.167.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.167.1.el9_0, kernel-5.14.0-70.167.1.el9_0, kernel-abi-stablelists-5.14.0-70.167.1.el9_0 +14
  • RHSA-2026:3277 Released 2026-02-25 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.130.1.el8_8, kernel-4.18.0-477.130.1.el8_8, kernel-abi-stablelists-4.18.0-477.130.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.130.1.el8_8, kernel-4.18.0-477.130.1.el8_8, kernel-abi-stablelists-4.18.0-477.130.1.el8_8 +14
  • RHSA-2026:3267 Released 2026-02-25 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.158.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.158.1.el9_2, kernel-64k-devel-5.14.0-284.158.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.158.1.el9_2, kernel-5.14.0-284.158.1.el9_2, kernel-64k-5.14.0-284.158.1.el9_2 +29
  • RHSA-2026:3268 Released 2026-02-25 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.181.1.el8_6, kernel-4.18.0-372.181.1.el8_6, kernel-abi-stablelists-4.18.0-372.181.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.181.1.el8_6, kernel-4.18.0-372.181.1.el8_6, kernel-abi-stablelists-4.18.0-372.181.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.181.1.el8_6, kernel-4.18.0-372.181.1.el8_6, kernel-abi-stablelists-4.18.0-372.181.1.el8_6 +14
  • RHSA-2026:2766 Released 2026-02-17 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.111.1.el9_4, libperf-5.14.0-427.111.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.111.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.111.1.el9_4, kernel-64k-devel-5.14.0-427.111.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.111.1.el9_4, kernel-5.14.0-427.111.1.el9_4, kernel-64k-5.14.0-427.111.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.111.1.el9_4, kernel-rt-core-5.14.0-427.111.1.el9_4, kernel-rt-debug-5.14.0-427.111.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.111.1.el9_4, kernel-rt-core-5.14.0-427.111.1.el9_4, kernel-rt-debug-5.14.0-427.111.1.el9_4 +11
  • RHSA-2026:2759 Released 2026-02-16 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.89.1.el9_6, libperf-5.14.0-570.89.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.89.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.89.1.el9_6, kernel-64k-devel-5.14.0-570.89.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.89.1.el9_6, kernel-64k-5.14.0-570.89.1.el9_6, kernel-64k-core-5.14.0-570.89.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.89.1.el9_6, kernel-rt-64k-5.14.0-570.89.1.el9_6, kernel-rt-64k-core-5.14.0-570.89.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.89.1.el9_6, kernel-rt-core-5.14.0-570.89.1.el9_6, kernel-rt-debug-5.14.0-570.89.1.el9_6 +11
  • RHSA-2026:2282 Released 2026-02-09 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.35.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.35.1.el10_1, kernel-64k-devel-6.12.0-124.35.1.el10_1 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.35.1.el10_1, kernel-64k-6.12.0-124.35.1.el10_1, kernel-64k-core-6.12.0-124.35.1.el10_1 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.35.1.el10_1, libperf-6.12.0-124.35.1.el10_1
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.35.1.el10_1, kernel-rt-64k-6.12.0-124.35.1.el10_1, kernel-rt-64k-core-6.12.0-124.35.1.el10_1 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.35.1.el10_1, kernel-rt-core-6.12.0-124.35.1.el10_1, kernel-rt-debug-6.12.0-124.35.1.el10_1 +9
  • RHSA-2026:1727 Released 2026-02-02 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.58.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.58.1.el10_0, kernel-64k-devel-6.12.0-55.58.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.58.1.el10_0, kernel-64k-6.12.0-55.58.1.el10_0, kernel-64k-core-6.12.0-55.58.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.58.1.el10_0, libperf-6.12.0-55.58.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.58.1.el10_0, kernel-rt-64k-6.12.0-55.58.1.el10_0, kernel-rt-64k-core-6.12.0-55.58.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.58.1.el10_0, kernel-rt-core-6.12.0-55.58.1.el10_0, kernel-rt-debug-6.12.0-55.58.1.el10_0 +11
  • RHSA-2026:0793 Released 2026-01-19 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-611.24.1.el9_7, kernel-64k-debug-devel-matched-5.14.0-611.24.1.el9_7, kernel-64k-devel-5.14.0-611.24.1.el9_7 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-611.24.1.el9_7, kernel-64k-5.14.0-611.24.1.el9_7, kernel-64k-core-5.14.0-611.24.1.el9_7 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-611.24.1.el9_7, libperf-5.14.0-611.24.1.el9_7
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-611.24.1.el9_7, kernel-rt-64k-5.14.0-611.24.1.el9_7, kernel-rt-64k-core-5.14.0-611.24.1.el9_7 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-611.24.1.el9_7, kernel-rt-core-5.14.0-611.24.1.el9_7, kernel-rt-debug-5.14.0-611.24.1.el9_7 +9
  • RHSA-2026:0759 Released 2026-01-19 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.94.1.el8_10, kernel-4.18.0-553.94.1.el8_10, kernel-abi-stablelists-4.18.0-553.94.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.94.1.el8_10
  • RHSA-2026:0760 Released 2026-01-19 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-core-4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-debug-core-4.18.0-553.94.1.rt7.435.el8_10 +8
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-core-4.18.0-553.94.1.rt7.435.el8_10, kernel-rt-debug-core-4.18.0-553.94.1.rt7.435.el8_10 +6

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-2026:2766
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:2759
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:0793
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2026:3293
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:3267
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2026:2766
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:2759
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:0759
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:0793
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:3360
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:3268
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2026:3268
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:3277
Red Hat Enterprise Linux BaseOS E4S (v.9.0)Fixed RHSA-2026:3293
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:3267
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2026:2766
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:2759
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:3360
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2026:3268
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:3277
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:0759
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:0793
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:0760
Red Hat Enterprise Linux NFV E4S (v.9.0)Fixed RHSA-2026:3375
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:0760
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:0793
Red Hat Enterprise Linux Real Time E4S (v.9.0)Fixed RHSA-2026:3375
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:3358
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2026:2766
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:2759
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:2282
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:0793
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:3358
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:1727
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2026:2766
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:2759
Not affected: 6 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux BaseOS (v. 8)
  • Red Hat Enterprise Linux CRB (v. 8)
  • Red Hat Enterprise Linux NFV (v. 8)
  • Red Hat Enterprise Linux RT (v. 8)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-39933
  2. 2026-10-03 Alias added: GHSA-2vj6-wmm6-q722
  3. 2026-10-21 Fix available: Linux/Linux@241e58de23e7c1bbb9bee526c17d9a0f2a90fbad, Linux/[email protected], Linux/[email protected] +1 · CNA
  4. 2026-10-21 2 new references · CNA
  5. 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@fdc23a47be015fba915c4f9dfd43c65ad4829a35 · CNA
  6. 2026-10-30 1 new reference · CNA

References

Patch 2

Other 3

  • 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