{"id":"CVE-2026-90417","title":"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 call…","summary":"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 call…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 < 6b15fc9bc117fb6597fa1c2cc30284aafe71101c","Linux >= 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635 < 373f3716a2de7adc739269ebb4d87e5bf4dc180c","Linux 4.8"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:46.050","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90417","references":[{"url":"https://git.kernel.org/stable/c/373f3716a2de7adc739269ebb4d87e5bf4dc180c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6b15fc9bc117fb6597fa1c2cc30284aafe71101c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.795Z","epss":0.00189,"epssPercentile":0.08854,"slug":"CVE-2026-90417","body":"## Overview\n\nIn 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().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}