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CVE-2026-80779

net/ionic: avoid OOB TX partner lookup for hwstamp RXQ

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.12.106, 6.18.47, 7.1.11, 7.2.1
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: net/ionic: avoid OOB TX partner lookup for hwstamp RXQ The dedicated hardware timestamp RX queue is allocated with q->index equal to lif->ionic->nrxqs_per_lif. The normal txqcqs array only contains the regular queue pairs, so using that index to set rxq->partner can read one entry past txqcqs[] and then write through the derived pointer. Only link RX/TX partners for normal queue-pair indexes. Leave the hwstamp RX queue unpaired, and make the XDP_TX path abort cleanly if an RX queue has no TX partner.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 8eeed8373e1cca836799bf8e4a05cffa8e444908 · fixed in 881a805a8029ba48c0ce81c6674910f8d83f7afb; From 8eeed8373e1cca836799bf8e4a05cffa8e444908 · fixed in 39fc615e355b65b8d43be30da57aa95ae6eaf688; From 8eeed8373e1cca836799bf8e4a05cffa8e444908 · fixed in f3868046e8e2e761d4d943a232bd109ff22a7d5b; From 8eeed8373e1cca836799bf8e4a05cffa8e444908 · fixed in ea081b4435515ac7177eb598a3c0678d1b9e7911; From 8eeed8373e1cca836799bf8e4a05cffa8e444908 · fixed in d92255b405fb6f5acca408239ccd742e0a42c9cb

  • Linux Linux

    6.9

  • KernelLinux

    From 6.9.0 · fixed in 6.12.106; From 6.13.0 · fixed in 6.18.47; From 6.19.0 · fixed in 7.1.11; From 7.2.0 · fixed in 7.2.1

References 5

git.kernel.org