tun: add missing verification for short frame
Priority LOW 38CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 31 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: tun: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tun_xdp_one() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tun_xdp_one-->eth_type_trans() may access the Ethernet header although it can be less than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tun_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted for IFF_TAP. This is to drop any frame shorter than the Ethernet header size just like how tun_get_user() does. CVE: CVE-2024-41091
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00256 17th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.4.281, 5.10.223, 5.15.164 +5Red Hat: 19 advisoriesRed Hat: 31 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.20 and later | 5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12, 6.10.2, 6.11 | Patch available | CNA |
- Linux VendorLinux Affected 4.20 and later Fixed in 5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12, 6.10.2, 6.11 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.20 to before 5.4.281; 5.5 to before 5.10.223; 5.11 to before 5.15.164; 5.16 to before 6.1.102; 6.2 to before 6.6.43; 6.7 to before 6.9.12; 6.10 to before 6.10.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.20 to before 5.4.281; 5.5 to before 5.10.223; 5.11 to before 5.15.164; 5.16 to before 6.1.102; 6.2 to before 6.6.43; 6.7 to before 6.9.12; 6.10 to before 6.10.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12, 6.10.2, 6.11
Red Hat 19 advisories
- RHSA-2024:7429 Released 2024-10-01 · Red Hat rating Importantkpatch-patch-4_18_0-553 and kpatch-patch-4_18_0-553_16_1 security update
- Red Hat Enterprise Linux BaseOS (v. 8) kpatch-patch-4_18_0-553-1-2.el8_10, kpatch-patch-4_18_0-553_16_1-1-1.el8_10
- RHSA-2024:7000 Released 2024-09-24 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.22.1.el8_10, kernel-4.18.0-553.22.1.el8_10, kernel-abi-stablelists-4.18.0-553.22.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.22.1.el8_10
- RHSA-2024:7001 Released 2024-09-24 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-core-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-debug-4.18.0-553.22.1.rt7.363.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-core-4.18.0-553.22.1.rt7.363.el8_10, kernel-rt-debug-4.18.0-553.22.1.rt7.363.el8_10 +7
Show 16 more Red Hat advisories
- RHSA-2024:6992 Released 2024-09-24 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.141.1.el8_2, kernel-4.18.0-193.141.1.el8_2, kernel-abi-whitelists-4.18.0-193.141.1.el8_2 +14
- RHSA-2024:6663 Released 2024-09-12 · Red Hat rating Importantkpatch-patch-4_18_0-305_120_1 and kpatch-patch-4_18_0-305_138_1 security update
- Red Hat Enterprise Linux BaseOS E4S (v.8.4) kpatch-patch-4_18_0-305_120_1-1-5.el8_4, kpatch-patch-4_18_0-305_138_1-1-1.el8_4
- RHSA-2024:6560 Released 2024-09-10 · Red Hat rating Importantkpatch-patch-4_18_0-477_43_1 and kpatch-patch-4_18_0-477_67_1 security update
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) kpatch-patch-4_18_0-477_43_1-1-4.el8_8, kpatch-patch-4_18_0-477_67_1-1-1.el8_8
- RHSA-2024:6313 Released 2024-09-04 · Red Hat rating Importantkpatch-patch-5_14_0-284_52_1 and kpatch-patch-5_14_0-284_79_1 security update
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) kpatch-patch-5_14_0-284_52_1-1-5.el9_2, kpatch-patch-5_14_0-284_79_1-1-1.el9_2
- RHSA-2024:6242 Released 2024-09-03 · Red Hat rating Importantkpatch-patch-5_14_0-427_13_1 and kpatch-patch-5_14_0-427_31_1 security update
- Red Hat Enterprise Linux BaseOS (v. 9) kpatch-patch-5_14_0-427_13_1-1-3.el9_4, kpatch-patch-5_14_0-427_31_1-1-1.el9_4
- RHSA-2024:6206 Released 2024-09-03 · Red Hat rating Importantkernel security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.70.1.el8_8
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.70.1.el8_8, kernel-4.18.0-477.70.1.el8_8, kernel-abi-stablelists-4.18.0-477.70.1.el8_8 +19
- RHSA-2024:6156 Released 2024-09-03 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.139.1.el8_4, kernel-4.18.0-305.139.1.el8_4, kernel-abi-stablelists-4.18.0-305.139.1.el8_4 +14
- Red Hat Enterprise Linux BaseOS E4S (v.8.4) bpftool-4.18.0-305.139.1.el8_4, kernel-4.18.0-305.139.1.el8_4, kernel-abi-stablelists-4.18.0-305.139.1.el8_4 +14
- Red Hat Enterprise Linux BaseOS TUS (v.8.4) bpftool-4.18.0-305.139.1.el8_4, kernel-4.18.0-305.139.1.el8_4, kernel-abi-stablelists-4.18.0-305.139.1.el8_4 +14
- RHSA-2024:6160 Released 2024-09-03 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux NFV TUS (v.8.4) kernel-rt-4.18.0-305.139.1.rt7.215.el8_4, kernel-rt-core-4.18.0-305.139.1.rt7.215.el8_4, kernel-rt-debug-4.18.0-305.139.1.rt7.215.el8_4 +9
- Red Hat Enterprise Linux RT TUS (v.8.4) kernel-rt-4.18.0-305.139.1.rt7.215.el8_4, kernel-rt-core-4.18.0-305.139.1.rt7.215.el8_4, kernel-rt-debug-4.18.0-305.139.1.rt7.215.el8_4 +7
- RHSA-2024:5928 Released 2024-08-28 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.33.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.33.1.el9_4, kernel-64k-devel-5.14.0-427.33.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.33.1.el9_4, kernel-5.14.0-427.33.1.el9_4, kernel-64k-5.14.0-427.33.1.el9_4 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.33.1.el9_4, libperf-5.14.0-427.33.1.el9_4
- Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.33.1.el9_4, kernel-rt-core-5.14.0-427.33.1.el9_4, kernel-rt-debug-5.14.0-427.33.1.el9_4 +11
- Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.33.1.el9_4, kernel-rt-core-5.14.0-427.33.1.el9_4, kernel-rt-debug-5.14.0-427.33.1.el9_4 +9
- RHSA-2024:5858 Released 2024-08-26 · Red Hat rating Importantkpatch-patch-5_14_0-70_85_1 security update
- Red Hat Enterprise Linux BaseOS E4S (v.9.0) kpatch-patch-5_14_0-70_85_1-1-4.el9_0
- RHSA-2024:5672 Released 2024-08-21 · Red Hat rating Importantkernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.80.1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.80.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.80.1.el9_2, kernel-64k-devel-5.14.0-284.80.1.el9_2 +9
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.80.1.el9_2, kernel-5.14.0-284.80.1.el9_2, kernel-64k-5.14.0-284.80.1.el9_2 +29
- RHSA-2024:5673 Released 2024-08-21 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.80.1.rt14.365.el9_2, kernel-rt-core-5.14.0-284.80.1.rt14.365.el9_2, kernel-rt-debug-5.14.0-284.80.1.rt14.365.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.80.1.rt14.365.el9_2, kernel-rt-core-5.14.0-284.80.1.rt14.365.el9_2, kernel-rt-debug-5.14.0-284.80.1.rt14.365.el9_2 +11
- RHSA-2024:5582 Released 2024-08-19 · Red Hat rating Importantkpatch-patch-4_18_0-372_87_1 and kpatch-patch-4_18_0-372_91_1 security update
- Red Hat Enterprise Linux BaseOS E4S (v.8.6) kpatch-patch-4_18_0-372_87_1-1-5.el8_6, kpatch-patch-4_18_0-372_91_1-1-4.el8_6
- RHSA-2024:5281 Released 2024-08-13 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.118.1.el8_6, kernel-4.18.0-372.118.1.el8_6, kernel-abi-stablelists-4.18.0-372.118.1.el8_6 +14
- Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.118.1.el8_6, kernel-4.18.0-372.118.1.el8_6, kernel-abi-stablelists-4.18.0-372.118.1.el8_6 +19
- Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.118.1.el8_6, kernel-4.18.0-372.118.1.el8_6, kernel-abi-stablelists-4.18.0-372.118.1.el8_6 +14
- RHSA-2024:5257 Released 2024-08-13 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.112.1.el9_0, kernel-debug-devel-matched-5.14.0-70.112.1.el9_0, kernel-devel-5.14.0-70.112.1.el9_0 +5
- Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.112.1.el9_0, kernel-5.14.0-70.112.1.el9_0, kernel-abi-stablelists-5.14.0-70.112.1.el9_0 +14
- RHSA-2024:5256 Released 2024-08-13 · Red Hat rating Importantkernel-rt security update
- Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-core-5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-debug-5.14.0-70.112.1.rt21.184.el9_0 +9
- Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-core-5.14.0-70.112.1.rt21.184.el9_0, kernel-rt-debug-5.14.0-70.112.1.rt21.184.el9_0 +7
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| RHOAI-2.13-RHEL-8 | Fixed | — |
| RHOAI-2.14-RHEL-8 | Fixed | — |
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:6206 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:5672 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:5928 |
| Red Hat Enterprise Linux AppStream E4S (v.9.0) | Fixed | RHSA-2024:5257 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:5672 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:7000, RHSA-2024:7429 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:5928, RHSA-2024:6242 |
| Red Hat Enterprise Linux BaseOS AUS (v. 8.2) | Fixed | RHSA-2024:6992 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.4) | Fixed | RHSA-2024:6156 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2024:5281 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.4) | Fixed | RHSA-2024:6156, RHSA-2024:6663 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.6) | Fixed | RHSA-2024:5281, RHSA-2024:5582 |
| Red Hat Enterprise Linux BaseOS E4S (v.9.0) | Fixed | RHSA-2024:5257, RHSA-2024:5858 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2024:6206, RHSA-2024:6560 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:5672, RHSA-2024:6313 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.4) | Fixed | RHSA-2024:6156 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.6) | Fixed | RHSA-2024:5281 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:7000 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:5928 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:7001 |
| Red Hat Enterprise Linux NFV (v. 9) | Fixed | RHSA-2024:5928 |
| Red Hat Enterprise Linux NFV E4S (v.9.0) | Fixed | RHSA-2024:5256 |
| Red Hat Enterprise Linux NFV TUS (v.8.4) | Fixed | RHSA-2024:6160 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:7001 |
| Red Hat Enterprise Linux RT (v. 9) | Fixed | RHSA-2024:5928 |
| Red Hat Enterprise Linux RT TUS (v.8.4) | Fixed | RHSA-2024:6160 |
| Red Hat Enterprise Linux Real Time E4S (v.9.0) | Fixed | RHSA-2024:5256 |
| Red Hat Enterprise Linux Real Time EUS (v.9.2) | Fixed | RHSA-2024:5673 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) | Fixed | RHSA-2024:5673 |
Not affected: 6 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux AppStream EUS (v.9.2)
- Red Hat Enterprise Linux BaseOS AUS (v.8.6)
- Red Hat Enterprise Linux BaseOS E4S (v.8.6)
- Red Hat Enterprise Linux BaseOS TUS (v.8.6)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-41091
- 2026-10-03 Alias added: GHSA-x5q2-qqwh-x9rv
- 2026-10-30 Fix available: RHOAI-2.13-RHEL-8, RHOAI-2.14-RHEL-8 · Red Hat
References
Patch 8
- https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9
- https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319
- https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2
- https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146
- https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692a
- https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb
- https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e545c598a5
- https://git.kernel.org/stable/c/049584807f1d797fc3078b68035450a9769eb5c3
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Sources
- CVE-2024-41091 · CVE Program
- CVE-2024-41091 · NVD
- FIRST EPSS
- GHSA-x5q2-qqwh-x9rv · GitHub Advisory Database · CC BY 4.0
- CVE-2024-41091 · Red Hat security data · CC BY 4.0
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