{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90417","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.813Z","datePublished":"2026-09-17T16:09:42.342Z","dateUpdated":"2026-09-17T16:09:42.342Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:09:42.342Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()\n\nWhen the device is in the fatal error state, write_tpt_entry() returns -EIO\nbefore handing the caller's preallocated skb to the transmit path; its\nallocation-failure returns do the same. c4iw_dereg_mr() ignores the error\nand frees mhp, leaking mhp->dereg_skb. c4iw_get_dma_mr() instead frees the\nskb a second time after dereg_mem() already consumed it, a double free.\n\nMake write_tpt_entry() the sole owner of a non-NULL skb, freeing it on\nevery return preceding handoff to c4iw_ofld_send(): fatal error, tpt and\nstag allocation failure. c4iw_ofld_send() consumes the skb on success and\nerror alike, so drop the redundant kfree_skb() in c4iw_get_dma_mr() after\ndereg_mem()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/cxgb4/mem.c"],"versions":[{"version":"0f8ab0b6e91b4d5302ceee5ec12ce54d81297635","lessThan":"6b15fc9bc117fb6597fa1c2cc30284aafe71101c","status":"affected","versionType":"git"},{"version":"0f8ab0b6e91b4d5302ceee5ec12ce54d81297635","lessThan":"373f3716a2de7adc739269ebb4d87e5bf4dc180c","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/cxgb4/mem.c"],"versions":[{"version":"4.8","status":"affected"},{"version":"0","lessThan":"4.8","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"4.8","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/6b15fc9bc117fb6597fa1c2cc30284aafe71101c"},{"url":"https://git.kernel.org/stable/c/373f3716a2de7adc739269ebb4d87e5bf4dc180c"}],"title":"RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry()","x_generator":{"engine":"bippy-1.2.0"}}}}