{"id":"CVE-2026-80779","state":"PUBLISHED","title":"net/ionic: avoid OOB TX partner lookup for hwstamp RXQ","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ionic: avoid OOB TX partner lookup for hwstamp RXQ\n\nThe dedicated hardware timestamp RX queue is allocated with q->index\nequal to lif->ionic->nrxqs_per_lif. The normal txqcqs array only\ncontains the regular queue pairs, so using that index to set rxq->partner\ncan read one entry past txqcqs[] and then write through the derived\npointer.\nOnly link RX/TX partners for normal queue-pair indexes. Leave the hwstamp\nRX queue unpaired, and make the XDP_TX path abort cleanly if an RX queue\nhas no TX partner.","publishedAt":"2026-09-04T15:12:51.103Z","updatedAt":"2026-10-19T08:43:34.624Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"881a805a8029ba48c0ce81c6674910f8d83f7afb","versionType":"git"},{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"39fc615e355b65b8d43be30da57aa95ae6eaf688","versionType":"git"},{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"f3868046e8e2e761d4d943a232bd109ff22a7d5b","versionType":"git"},{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"ea081b4435515ac7177eb598a3c0678d1b9e7911","versionType":"git"},{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"d92255b405fb6f5acca408239ccd742e0a42c9cb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/pensando/ionic/ionic_lif.c","drivers/net/ethernet/pensando/ionic/ionic_txrx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.106","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.47","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.1","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/pensando/ionic/ionic_lif.c","drivers/net/ethernet/pensando/ionic/ionic_txrx.c"]}],"references":["https://git.kernel.org/stable/c/881a805a8029ba48c0ce81c6674910f8d83f7afb","https://git.kernel.org/stable/c/39fc615e355b65b8d43be30da57aa95ae6eaf688","https://git.kernel.org/stable/c/f3868046e8e2e761d4d943a232bd109ff22a7d5b","https://git.kernel.org/stable/c/ea081b4435515ac7177eb598a3c0678d1b9e7911","https://git.kernel.org/stable/c/d92255b405fb6f5acca408239ccd742e0a42c9cb"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80779.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80779","state":"PUBLISHED","datePublished":"2026-09-04T15:12:51.103Z","dateUpdated":"2026-10-19T08:43:34.624Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.792Z"},"containers":{"cna":{"title":"net/ionic: avoid OOB TX partner lookup for hwstamp RXQ","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ionic: avoid OOB TX partner lookup for hwstamp RXQ\n\nThe dedicated hardware timestamp RX queue is allocated with q->index\nequal to lif->ionic->nrxqs_per_lif. The normal txqcqs array only\ncontains the regular queue pairs, so using that index to set rxq->partner\ncan read one entry past txqcqs[] and then write through the derived\npointer.\nOnly link RX/TX partners for normal queue-pair indexes. Leave the hwstamp\nRX queue unpaired, and make the XDP_TX path abort cleanly if an RX queue\nhas no TX partner."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"881a805a8029ba48c0ce81c6674910f8d83f7afb","versionType":"git"},{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"39fc615e355b65b8d43be30da57aa95ae6eaf688","versionType":"git"},{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"f3868046e8e2e761d4d943a232bd109ff22a7d5b","versionType":"git"},{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"ea081b4435515ac7177eb598a3c0678d1b9e7911","versionType":"git"},{"version":"8eeed8373e1cca836799bf8e4a05cffa8e444908","status":"affected","lessThan":"d92255b405fb6f5acca408239ccd742e0a42c9cb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/pensando/ionic/ionic_lif.c","drivers/net/ethernet/pensando/ionic/ionic_txrx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.12.106","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.47","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2.1","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/pensando/ionic/ionic_lif.c","drivers/net/ethernet/pensando/ionic/ionic_txrx.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/881a805a8029ba48c0ce81c6674910f8d83f7afb"},{"url":"https://git.kernel.org/stable/c/39fc615e355b65b8d43be30da57aa95ae6eaf688"},{"url":"https://git.kernel.org/stable/c/f3868046e8e2e761d4d943a232bd109ff22a7d5b"},{"url":"https://git.kernel.org/stable/c/ea081b4435515ac7177eb598a3c0678d1b9e7911"},{"url":"https://git.kernel.org/stable/c/d92255b405fb6f5acca408239ccd742e0a42c9cb"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:43:34.624Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.1.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.2.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}