CVE-2026-98668 PUBLISHED

iio: buffer: Ensure bounce buffer used for unaligned case is zeroed.

Assigner: Linux
Reserved: 25.09.2026 Published: 18.10.2026 Updated: 18.10.2026

In the Linux kernel, the following vulnerability has been resolved:

iio: buffer: Ensure bounce buffer used for unaligned case is zeroed.

iio_push_to_buffers_with_ts_unaligned() leaks uninitialized heap memory to userspace if the data passed in is not a multiple of 8 bytes and the timestamp is enabled. Specify __GFP_ZERO for the devm_krealloc() to ensure any extra space is cleared.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 to b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2 (excl.)
  • affected from 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 to b134ef820610bd873c9d59999d9824710964ce82 (excl.)
  • affected from 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 to 3a87212b1a09a1fdd730ce5520f7b1fc0b488511 (excl.)
  • affected from 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 to 5330036bc68d23672bfcc16c60c54701ae123083 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.16 is affected
  • unaffected from 0 to 5.16 (excl.)
  • unaffected from 6.12.113 to 6.12.* (incl.)
  • unaffected from 6.18.56 to 6.18.* (incl.)
  • unaffected from 7.2.10 to 7.2.* (incl.)
  • unaffected from 7.3-rc6 to * (incl.)

References