HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- 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-667 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up The flag I2C_HID_READ_PENDING is used to serialize I2C operations. However, this is not necessary, because I2C core already has its own locking for that. More importantly, this flag can cause a lock-up: if the flag is set in i2c_hid_xfer() and an interrupt happens, the interrupt handler (i2c_hid_irq) will check this flag and return immediately without doing anything, then the interrupt handler will be invoked again in an infinite loop. Since interrupt handler is an RT task, it takes over the CPU and the flag-clearing task never gets scheduled, thus we have a lock-up. Delete this unnecessary flag.
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 | 3.8 and later | 4.19.313, 5.4.275, 5.10.216, 5.15.158, 6.1.90, 6.6.30, 6.8.9, 6.9 | Patch available | CNA |
- Linux VendorLinux Affected 3.8 and later Fixed in 4.19.313, 5.4.275, 5.10.216, 5.15.158, 6.1.90, 6.6.30, 6.8.9, 6.9 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.8 to before 4.19.313; 4.20 to before 5.4.275; 5.5 to before 5.10.216; 5.11 to before 5.15.158; 5.16 to before 6.1.90; 6.2 to before 6.6.30; 6.7 to before 6.8.9 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.8 to before 4.19.313; 4.20 to before 5.4.275; 5.5 to before 5.10.216; 5.11 to before 5.15.158; 5.16 to before 6.1.90; 6.2 to before 6.6.30; 6.7 to before 6.8.9 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.313, 5.4.275, 5.10.216, 5.15.158, 6.1.90, 6.6.30, 6.8.9, 6.9
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-2024-35997
- 2026-10-03 Alias added: GHSA-23x8-g5mh-phmc
References
Patch 8
- https://git.kernel.org/stable/c/21bfca822cfc1e71796124e93b46e0d9fa584401
- https://git.kernel.org/stable/c/c448a9fd50f77e8fb9156ff64848aa4295eb3003
- https://git.kernel.org/stable/c/5095b93021b899f54c9355bebf36d78854c33a22
- https://git.kernel.org/stable/c/b65fb50e04a95eec34a9d1bc138454a98a5578d8
- https://git.kernel.org/stable/c/0561b65fbd53d3e788c5b0222d9112ca016fd6a1
- https://git.kernel.org/stable/c/29e94f295bad5be59cf4271a93e22cdcf5536722
- https://git.kernel.org/stable/c/418c5575d56410c6e186ab727bf32ae32447d497
- https://git.kernel.org/stable/c/9c0f59e47a90c54d0153f8ddc0f80d7a36207d0e
More Linux Kernel vulnerabilities
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- 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-2024-35997 · CVE Program
- CVE-2024-35997 · NVD
- FIRST EPSS
- GHSA-23x8-g5mh-phmc · GitHub Advisory Database · CC BY 4.0
- CVE-2024-35997 · Red Hat security data · CC BY 4.0
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