{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68418","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-30T09:28:09.391Z","datePublished":"2026-08-10T12:04:38.930Z","dateUpdated":"2026-08-17T05:05:13.218Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:05:13.218Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Prevent user-triggered null deref on QP create\n\nPreviously, the user QP creation path would only attempt to\npopulate iwqp->iwpbl if the user-provided req.user_wqe_bufs\nfield was non-zero. The problem is that iwqp->iwpbl is\nunconditionally dereferenced later on in irdma_setup_virt_qp.\n\nWhile there was a check for iwqp->iwpbl != NULL, this check\nwould only occur if req.user_wqe_bufs was non-zero. The end\nresult is that a user could send a zero user_wqe_bufs value\nand trigger a null ptr deref.\n\nFix this by unconditionally calling irdma_get_pbl and bailing\nif it fails, similar to the CQ and SRQ paths."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/irdma/verbs.c"],"versions":[{"version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","lessThan":"ec675b4cdfd378d8c9dd8c93126c024f2469bd79","status":"affected","versionType":"git"},{"version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","lessThan":"728211c815f6eef28dd3df2a5b6297483185aa20","status":"affected","versionType":"git"},{"version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","lessThan":"b9b0889071569d43623c260074e159cd8f26adb1","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/irdma/verbs.c"],"versions":[{"version":"5.14","status":"affected"},{"version":"0","lessThan":"5.14","status":"unaffected","versionType":"semver"},{"version":"6.18.42","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.6","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ec675b4cdfd378d8c9dd8c93126c024f2469bd79"},{"url":"https://git.kernel.org/stable/c/728211c815f6eef28dd3df2a5b6297483185aa20"},{"url":"https://git.kernel.org/stable/c/b9b0889071569d43623c260074e159cd8f26adb1"}],"title":"RDMA/irdma: Prevent user-triggered null deref on QP create","x_generator":{"engine":"bippy-1.2.0"}}}}