{"id":"CVE-2024-26748","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: fix memory double free when handle zero packet\n\n829  if (request->complete) {\n830          spin_unlock(&priv_dev->lock);\n831          usb_gadget_giveback_re…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: fix memory double free when handle zero packet\n\n829  if (request->complete) {\n830          spin_unlock(&priv_dev->lock);\n831          usb_gadget_giveback_re…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-415"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.4, < 5.4.270","linux_kernel >= 5.5, < 5.10.211","linux_kernel >= 5.11, < 5.15.150","linux_kernel >= 5.16, < 6.1.80","linux_kernel >= 6.2, < 6.6.19","linux_kernel >= 6.7, < 6.7.7","linux_kernel = 6.8"],"patched":["linux_kernel 6.7.7"],"published":"2024-04-03","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-26748","references":[{"url":"https://git.kernel.org/stable/c/1e204a8e9eb514e22a6567fb340ebb47df3f3a48","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3a2a909942b5335b7ea66366d84261b3ed5f89c8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5fd9e45f1ebcd57181358af28506e8a661a260b3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/70e8038813f9d3e72df966748ebbc40efe466019","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/92d20406a3d4ff3e8be667c79209dc9ed31df5b3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9a52b694b066f299d8b9800854a8503457a8b64c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aad6132ae6e4809e375431f8defd1521985e44e7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1e204a8e9eb514e22a6567fb340ebb47df3f3a48","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/3a2a909942b5335b7ea66366d84261b3ed5f89c8","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/5fd9e45f1ebcd57181358af28506e8a661a260b3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/70e8038813f9d3e72df966748ebbc40efe466019","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/92d20406a3d4ff3e8be667c79209dc9ed31df5b3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/9a52b694b066f299d8b9800854a8503457a8b64c","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/aad6132ae6e4809e375431f8defd1521985e44e7","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00242,"epssPercentile":0.15709,"ingestedAt":"2026-08-05T10:46:48.422Z","slug":"CVE-2024-26748","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: fix memory double free when handle zero packet\n\n829  if (request->complete) {\n830          spin_unlock(&priv_dev->lock);\n831          usb_gadget_giveback_request(&priv_ep->endpoint,\n832                                    request);\n833          spin_lock(&priv_dev->lock);\n834  }\n835\n836  if (request->buf == priv_dev->zlp_buf)\n837      cdns3_gadget_ep_free_request(&priv_ep->endpoint, request);\n\nDriver append an additional zero packet request when queue a packet, which\nlength mod max packet size is 0. When transfer complete, run to line 831,\nusb_gadget_giveback_request() will free this requestion. 836 condition is\ntrue, so cdns3_gadget_ep_free_request() free this request again.\n\nLog:\n\n[ 1920.140696][  T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3]\n[ 1920.140696][  T150]\n[ 1920.151837][  T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36):\n[ 1920.159082][  T150]  cdns3_gadget_giveback+0x134/0x2c0 [cdns3]\n[ 1920.164988][  T150]  cdns3_transfer_completed+0x438/0x5f8 [cdns3]\n\nAdd check at line 829, skip call usb_gadget_giveback_request() if it is\nadditional zero length packet request. Needn't call\nusb_gadget_giveback_request() because it is allocated in this driver.\n\n## Affected\n\n- `linux_kernel >= 5.4, < 5.4.270`\n- `linux_kernel >= 5.5, < 5.10.211`\n- `linux_kernel >= 5.11, < 5.15.150`\n- `linux_kernel >= 5.16, < 6.1.80`\n- `linux_kernel >= 6.2, < 6.6.19`\n- `linux_kernel >= 6.7, < 6.7.7`\n- `linux_kernel = 6.8`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.7.7`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}