CVE-2026-63967
What it is
In the Linux kernel, the following vulnerability has been resolved: iio: imu: st_lsm6dsx: fix stack leak in tagged FIFO buffer The tagged FIFO path declares iio_buff on the stack with __aligned(8) but no initializer, but there is a hole in the structure, which will then leak to userspace as ST_LSM6DSX_SAMPLE_SIZE bytes (6) will be copied, but the space between that and the timestamp are not initialized. Commit c14edb4d0bdc ("iio:imu:st_lsm6dsx Fix alignment and data leak issues") moved the untagged FIFO path to a kzalloc'd buffer in hw->scan, but for the tagged path it only added the alignment qualifier and not the initializer :( Fix this by just zero-initializing the structure on the stack.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Analyzed
Affected
- Linux Kernel < 5.10.259
- Linux Kernel < 5.15.210
- Linux Kernel < 6.1.176
- Linux Kernel < 6.6.143
- Linux Kernel < 6.12.93
- Linux Kernel < 6.18.35
- Linux Kernel < 7.0.12
- Linux Kernel 7.1
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-63967.md and follow it. Check whether this project is affected by CVE-2026-63967. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/3147b303b8c7d9f91da4b849ece33b45048f5eaf
- https://git.kernel.org/stable/c/890d0312d5f94be43eac21f5a34d3bccc60d051b
- https://git.kernel.org/stable/c/babf1943a40bb5669db57d30ca16c22504b18e07
- https://git.kernel.org/stable/c/c9d8e9adaa63150ef7e833480b799d0bab83a276
- https://git.kernel.org/stable/c/d42ac0bfb6a16617c62a59d53706579c7fadbfa6
- https://git.kernel.org/stable/c/e6bb3a49c5f9de870ea95e69775df785728e3366
- https://git.kernel.org/stable/c/fe1a7f99e72ebd2880515332b79b8c256be22aca
- https://git.kernel.org/stable/c/ff8d3c088b77b11782f2c3b97e37425be050e8de
References
- https://git.kernel.org/stable/c/3147b303b8c7d9f91da4b849ece33b45048f5eaf
- https://git.kernel.org/stable/c/890d0312d5f94be43eac21f5a34d3bccc60d051b
- https://git.kernel.org/stable/c/babf1943a40bb5669db57d30ca16c22504b18e07
- https://git.kernel.org/stable/c/c9d8e9adaa63150ef7e833480b799d0bab83a276
- https://git.kernel.org/stable/c/d42ac0bfb6a16617c62a59d53706579c7fadbfa6
- https://git.kernel.org/stable/c/e6bb3a49c5f9de870ea95e69775df785728e3366
- https://git.kernel.org/stable/c/fe1a7f99e72ebd2880515332b79b8c256be22aca
- https://git.kernel.org/stable/c/ff8d3c088b77b11782f2c3b97e37425be050e8de