{"id":"CVE-2026-31501","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path\n\ncppi5_hdesc_get_psdata() returns a pointer into the CPPI descriptor.\nIn both emac_rx_packet() a…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path\n\ncppi5_hdesc_get_psdata() returns a pointer into the CPPI descriptor.\nIn both emac_rx_packet() a…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.15.1, < 6.19.11","linux_kernel = 6.15","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.11"],"published":"2026-04-22","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:28.990","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-31501","references":[{"url":"https://git.kernel.org/stable/c/c516c2e06fe580b8d38de60cd407072a5de81506","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d5827316debcb677679bb014885d7be92c410e11","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eb8c426c9803beb171f89d15fea17505eb517714","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.0038,"epssPercentile":0.30253,"ingestedAt":"2026-10-15T11:00:41.714Z","slug":"CVE-2026-31501","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path\n\ncppi5_hdesc_get_psdata() returns a pointer into the CPPI descriptor.\nIn both emac_rx_packet() and emac_rx_packet_zc(), the descriptor is\nfreed via k3_cppi_desc_pool_free() before the psdata pointer is used\nby emac_rx_timestamp(), which dereferences psdata[0] and psdata[1].\nThis constitutes a use-after-free on every received packet that goes\nthrough the timestamp path.\n\nDefer the descriptor free until after all accesses through the psdata\npointer are complete. For emac_rx_packet(), move the free into the\nrequeue label so both early-exit and success paths free the descriptor\nafter all accesses are done. For emac_rx_packet_zc(), move the free to\nthe end of the loop body after emac_dispatch_skb_zc() (which calls\nemac_rx_timestamp()) has returned.\n\n## Affected\n\n- `linux_kernel >= 6.15.1, < 6.19.11`\n- `linux_kernel = 6.15`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.11`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}