All vulnerabilities
CVE-2026-98155

Linux: accel/qaic: Address potential out-of-bounds read in resp_worker()

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)0.12%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in5807a65f301b6c0e73a2dc03dd6f5e80a2861b72Also 12deeade460d47031267256ba07add51cc7eabd0, 6.6.158 and 3 moreCVE List
Published25 Sep 2026Updated 19 Oct 2026CVE List

What fixes it

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:

accel/qaic: Address potential out-of-bounds read in resp_worker()

Although 'commit 2feec5ae5df7 ("accel/qaic: Handle DBC deactivation if the owner went away")' fixes the scenario it was intended for by walking the message and only decoding QAIC_TRANS_DEACTIVATE_FROM_DEV, if present, it skipped over the bounds checking code that is included in decode_message(). This could lead to issues such as reading past the slab allocation's end, infinite loops or kernel panics. For those issues to happen, a malformed wire message is needed to be sent from the device.

Instead of duplicating the bounds checking code already present in decode_message(), use the function inside resp_worker().

Text from CVE List

Affected versions 17

  • Linuxaffected: 2dd67966f39a2abf8ccb4865031c722e40e01b7f before 5807a65f301b6c0e73a2dc03dd6f5e80a2861b72CVE List
  • Linuxaffected: 08021f2d4a557d6491e3bcc288e96425f50aa3cf before f4b64488f3deca63f7fbc7d7c3835b2e668003f9CVE List
  • Linuxaffected: f403094d9075d7c565a3d81002b781c325cb3c07 before 12deeade460d47031267256ba07add51cc7eabd0CVE List
  • Linuxaffected: 2feec5ae5df785658924ab6bd91280dc3926507c before c72e81ee46bdd4c221114d6e9515e9b4647616d7CVE List
  • Linuxaffected: 2feec5ae5df785658924ab6bd91280dc3926507c before ab243f74ab4084ca5c8dec608cb5b0deb27db067CVE List
  • Linuxaffected: ee0180e77e6c8482644569632065411de844c515CVE List
  • Linuxaffected: 6.6.134 before 6.6.158CVE List
  • Linuxaffected: 6.12.81 before 6.12.111CVE List
  • Linuxaffected: 6.18.22 before 6.18.53CVE List
  • Linuxaffected: 6.19.12 before 6.20CVE List
  • Linuxaffected: 7.0CVE List
  • Linuxunaffected: all versions before 7.0CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2.7 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 5