ipv6: fix panic when forwarding a pkt with no in6 dev
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 4 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: ipv6: fix panic when forwarding a pkt with no in6 dev kongweibin reported a kernel panic in ip6_forward() when input interface has no in6 dev associated. The following tc commands were used to reproduce this panic: tc qdisc del dev vxlan100 root tc qdisc add dev vxlan100 root netem corrupt 5%
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 | 4.19.199 to before 4.19.239; 5.4.136 to before 5.4.190; 5.10.54 to before 5.10.112; 5.13.6 to before 5.14 | 4.19.239, 5.4.190, 5.10.112, 5.14 | Patch available | CNA |
| Linux | Linux | 5.14 and later | 4.19.239, 5.4.190, 5.10.112, 5.15.35, 5.17.4, 5.18 | Patch available | CNA |
- Linux VendorLinux Affected 4.19.199 to before 4.19.239; 5.4.136 to before 5.4.190; 5.10.54 to before 5.10.112; 5.13.6 to before 5.14 Fixed in 4.19.239, 5.4.190, 5.10.112, 5.14 Patch available CNA
- Linux VendorLinux Affected 5.14 and later Fixed in 4.19.239, 5.4.190, 5.10.112, 5.15.35, 5.17.4, 5.18 Patch available CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.19.199 to before 4.19.239; 5.4.136 to before 5.4.190; 5.10.54 to before 5.10.112; 5.13.6 to before 5.14; 5.14.1 to before 5.15.35; 5.16 to before 5.17.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:* | 5.14 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:* | 5.14 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:* | 5.14 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:* | 5.14 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:* | 5.14 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:* | 5.14 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:* | 5.14 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:* | 5.18 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:* | 5.18 rc2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.19.199 to before 4.19.239; 5.4.136 to before 5.4.190; 5.10.54 to before 5.10.112; 5.13.6 to before 5.14; 5.14.1 to before 5.15.35; 5.16 to before 5.17.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:* Versions 5.14 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:* Versions 5.14 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:* Versions 5.14 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:* Versions 5.14 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:* Versions 5.14 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:* Versions 5.14 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:* Versions 5.14 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:* Versions 5.18 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:* Versions 5.18 rc2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.239, 5.4.190, 5.10.112, 5.14
- Fix · CNA Linux (Linux) Fixed in 4.19.239, 5.4.190, 5.10.112, 5.15.35, 5.17.4, 5.18
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
Not affected: 1 product
- Red Hat Enterprise Linux 10
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49048
- 2026-10-03 Alias added: GHSA-hv5h-q6gh-5q7w
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: LOW → MEDIUM
References
Patch 6
- https://git.kernel.org/stable/c/74b68f5249f16c5f7f675d0f604fa6ae20e3a151
- https://git.kernel.org/stable/c/ab2f5afb7af5c68389e8c7dd29e0a98fbeaaa435
- https://git.kernel.org/stable/c/a263712ba8c9ded25dd9d2d5ced11bcea5b33a3e
- https://git.kernel.org/stable/c/adee01bbf6cb5b3e4ed08be8ff866aac90f13836
- https://git.kernel.org/stable/c/e69fb3de87a8923e5931a272a38fa3cceb01da44
- https://git.kernel.org/stable/c/e3fa461d8b0e185b7da8a101fe94dfe6dd500ac0
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- 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
Sources
- CVE-2022-49048 · CVE Program
- CVE-2022-49048 · NVD
- FIRST EPSS
- GHSA-hv5h-q6gh-5q7w · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49048 · Red Hat security data · CC BY 4.0
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