{"id":"CVE-2026-74545","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74545","summary":"rtase: fix double free of multi-frag skb on DMA map failure","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nrtase: fix double free of multi-frag skb on DMA map failure\n\nIn rtase_start_xmit(), when the head buffer DMA mapping fails after\nrtase_xmit_frags() has mapped all fragments, the error path clears\nthe fragment descriptors with rtase_tx_clear_range(), which frees\nthe skb through the last-frag slot and accounts tx_dropped. Control\nthen falls through to the common error label, which frees the same\nskb a second time and counts it again.\n\nReturn right after clearing the fragments when the skb owns frags;\nthe no-frag case still drops through and frees the head skb once.","published":"2026-08-15T12:27:54.536Z","modified":"2026-08-18T03:56:30.668573094Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.103"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4f09172aff5f73a5e914f4fbc0d00a1c2ea9f7cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6fb7b769d6ed6d1d2e02af4a80e57a2477f35086"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db986098f30881fafcc752800aa3b13fd289c922"},{"type":"WEB","url":"https://git.kernel.org/stable/c/de691dc3227b061c4d0beba9f0128fe1ff33dd68"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74545.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74545"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:30.668573094Z"}}