igb: Initialize mailbox message for VF reset
Priority LOW 24CWE-908Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-908 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: igb: Initialize mailbox message for VF reset When a MAC address is not assigned to the VF, that portion of the message sent to the VF is not set. The memory, however, is allocated from the stack meaning that information may be leaked to the VM. Initialize the message buffer to 0 so that no information is passed to the VM in this case.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.14.303, 4.19.270, 5.4.229 +5Red Hat: 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 | 4.0 and later | 4.14.303, 4.19.270, 5.4.229, 5.10.161, 5.15.85, 6.0.15, 6.1.1, 6.2 | Patch available | CNA |
- Linux VendorLinux Affected 4.0 and later Fixed in 4.14.303, 4.19.270, 5.4.229, 5.10.161, 5.15.85, 6.0.15, 6.1.1, 6.2 Patch available CNA
CPE configurations NVD · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.0 to before 4.14.303; 4.15 to before 4.19.270; 4.20 to before 5.4.229; 5.5 to before 5.10.161; 5.11 to before 5.15.85; 5.16 to before 6.0.15 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:*:*:*:*:*:*:* | 6.1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* | 6.1 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* | 6.1 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* | 6.1 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* | 6.1 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* | 6.1 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:* | 6.1 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:* | 6.1 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.1:rc8:*:*:*:*:*:* | 6.1 rc8 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.0 to before 4.14.303; 4.15 to before 4.19.270; 4.20 to before 5.4.229; 5.5 to before 5.10.161; 5.11 to before 5.15.85; 5.16 to before 6.0.15 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:*:*:*:*:*:*:* Versions 6.1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* Versions 6.1 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* Versions 6.1 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* Versions 6.1 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* Versions 6.1 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:* Versions 6.1 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:* Versions 6.1 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:* Versions 6.1 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.1:rc8:*:*:*:*:*:* Versions 6.1 rc8 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.14.303, 4.19.270, 5.4.229, 5.10.161, 5.15.85, 6.0.15, 6.1.1, 6.2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2022-48949
- 2026-10-03 Alias added: GHSA-2jwm-7wcx-f364
References
Patch 8
- https://git.kernel.org/stable/c/a6629659af3f5c6a91e3914ea62554c975ab77f4
- https://git.kernel.org/stable/c/ef1d739dd1f362aec081278ff92f943c31eb177a
- https://git.kernel.org/stable/c/c581439a977545d61849a72e8ed631cfc8a2a3c1
- https://git.kernel.org/stable/c/f2479c3daaabccbac6c343a737615d0c595c6dc4
- https://git.kernel.org/stable/c/367e1e3399dbc56fc669740c4ab60e35da632b0e
- https://git.kernel.org/stable/c/51fd5ede7ed42f272682a0c33d6f0767b3484a3d
- https://git.kernel.org/stable/c/c383c7c35c7bc15e07a04eefa060a8a80cbeae29
- https://git.kernel.org/stable/c/de5dc44370fbd6b46bd7f1a1e00369be54a041c8
More Linux Kernel vulnerabilities
- 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
Sources
- CVE-2022-48949 · CVE Program
- CVE-2022-48949 · NVD
- FIRST EPSS
- GHSA-2jwm-7wcx-f364 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-48949 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences