CVE-2026-80779

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8eeed8373e1cca836799bf8e4a05cffa8e444908 < 881a805a8029ba48c0ce81c6674910f8d83f7afbaffected
LinuxLinux8eeed8373e1cca836799bf8e4a05cffa8e444908 < 39fc615e355b65b8d43be30da57aa95ae6eaf688affected
LinuxLinux8eeed8373e1cca836799bf8e4a05cffa8e444908 < f3868046e8e2e761d4d943a232bd109ff22a7d5baffected
LinuxLinux8eeed8373e1cca836799bf8e4a05cffa8e444908 < ea081b4435515ac7177eb598a3c0678d1b9e7911affected
LinuxLinux8eeed8373e1cca836799bf8e4a05cffa8e444908 < d92255b405fb6f5acca408239ccd742e0a42c9cbaffected
LinuxLinux6.9affected
LinuxLinux0 < 6.9unaffected
LinuxLinux6.12.106 <= 6.12.*unaffected
LinuxLinux6.18.47 <= 6.18.*unaffected
LinuxLinux7.1.11 <= 7.1.*unaffected
LinuxLinux7.2.1 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References