IB/hfi1: Correctly move list in sc_disable()
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Correctly move list in sc_disable() Commit 13bac861952a ("IB/hfi1: Fix abba locking issue with sc_disable()") incorrectly tries to move a list from one list head to another. The result is a kernel crash. The crash is triggered when a link goes down and there are waiters for a send to complete. The following signature is seen: BUG: kernel NULL pointer dereference, address: 0000000000000030 [...] Call Trace: sc_disable+0x1ba/0x240 [hfi1] pio_freeze+0x3d/0x60 [hfi1] handle_freeze+0x27/0x1b0 [hfi1] process_one_work+0x1b0/0x380 ? process_one_work+0x380/0x380 worker_thread+0x30/0x360 ? process_one_work+0x380/0x380 kthread+0xd7/0x100 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 The fix is to use the correct call to move the list.
Why it matters now
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 | 5.4.157 to before 5.4.224; 5.10.77 to before 5.10.154; 5.14.16 to before 5.15 | 5.4.224, 5.10.154, 5.15 | Patch available | CNA |
| Linux | Linux | 5.15 and later | 5.4.224, 5.10.154, 5.15.78, 6.0.8, 6.1 | Patch available | CNA |
- Linux VendorLinux Affected 5.4.157 to before 5.4.224; 5.10.77 to before 5.10.154; 5.14.16 to before 5.15 Fixed in 5.4.224, 5.10.154, 5.15 Patch available CNA
- Linux VendorLinux Affected 5.15 and later Fixed in 5.4.224, 5.10.154, 5.15.78, 6.0.8, 6.1 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.4.157 to before 5.4.224; 5.10.77 to before 5.10.154; 5.14.16 to before 5.15.78; 5.16 to before 6.0.8 | 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:*:*:*:*:*:*:*:* Versions 5.4.157 to before 5.4.224; 5.10.77 to before 5.10.154; 5.14.16 to before 5.15.78; 5.16 to before 6.0.8 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
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.224, 5.10.154, 5.15
- Fix · CNA Linux (Linux) Fixed in 5.4.224, 5.10.154, 5.15.78, 6.0.8, 6.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. 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 |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49931
- 2026-10-03 Alias added: GHSA-6vr6-r6mg-9m3f
References
Patch 5
- https://git.kernel.org/stable/c/25760a41e3802f54aadcc31385543665ab349b8e
- https://git.kernel.org/stable/c/7c4260f8f188df32414a5ecad63e8b934c2aa3f0
- https://git.kernel.org/stable/c/ba95409d6b580501ff6d78efd00064f7df669926
- https://git.kernel.org/stable/c/b8bcff99b07cc175a6ee12a52db51cdd2229586c
- https://git.kernel.org/stable/c/1afac08b39d85437187bb2a92d89a741b1078f55
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- 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-2022-49931 · CVE Program
- CVE-2022-49931 · NVD
- FIRST EPSS
- GHSA-6vr6-r6mg-9m3f · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49931 · 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