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CVE-2026-98668

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

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3a87212b1a09a1fdd730ce5520f7b1fc0b488511Also 5330036bc68d23672bfcc16c60c54701ae123083CVE List
Published18 Oct 2026Updated 21 Oct 2026CVE List

What fixes it

  • 3a87212b1a09a1fdd730ce5520f7b1fc0b488511LinuxCVE List
  • 5330036bc68d23672bfcc16c60c54701ae123083LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 12

  • Linuxaffected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 before b4f53cec8cc94b37601ce0bb2b272b6753beed98CVE List
  • Linuxaffected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 before b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2CVE List
  • Linuxaffected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 before b134ef820610bd873c9d59999d9824710964ce82CVE List
  • Linuxaffected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 before 3a87212b1a09a1fdd730ce5520f7b1fc0b488511CVE List
  • Linuxaffected: 95ec3fdf2b79eaff79e78688bbc2f7dbb98d68b6 before 5330036bc68d23672bfcc16c60c54701ae123083CVE List
  • Linuxaffected: 5.16CVE List
  • Linuxunaffected: all versions before 5.16CVE List
  • Linuxunaffected: 6.6.160 through 6.6.*CVE List
  • Linuxunaffected: 6.12.113 through 6.12.*CVE List
  • Linuxunaffected: 6.18.56 through 6.18.*CVE List
  • Linuxunaffected: 7.2.10 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 5