{"id":"CVE-2026-93286","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: appletalk: fix NULL pointer dereference in aarp_send_ddp()\n\naarp_send_ddp() calls atalk_find_dev_addr(dev) in the LocalTalk fast\npath without checking for NULL","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: appletalk: fix NULL pointer dereference in aarp_send_ddp()\n\naarp_send_ddp() calls atalk_find_dev_addr(dev) in the LocalTalk fast\npath without checking for NULL. Wh…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8fc30f0cdf4207a5aa2341c0a98d0f1713b3ce2c","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 83899a056aeb120898a6e3a989971fc63e274e2e","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9e7f36ab5b7bf68463faa5f7b926fea8f35597bb","Linux 2.6.12"],"published":"2026-09-24","updated":"2026-09-24","sourceUpdated":"2026-09-24T17:17:09.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93286","references":[{"url":"https://git.kernel.org/stable/c/83899a056aeb120898a6e3a989971fc63e274e2e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8fc30f0cdf4207a5aa2341c0a98d0f1713b3ce2c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9e7f36ab5b7bf68463faa5f7b926fea8f35597bb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-24T16:47:15.905Z","slug":"CVE-2026-93286","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: appletalk: fix NULL pointer dereference in aarp_send_ddp()\n\naarp_send_ddp() calls atalk_find_dev_addr(dev) in the LocalTalk fast\npath without checking for NULL. When the device has no AppleTalk\ninterface configured (dev->atalk_ptr == NULL), this leads to a NULL\npointer dereference at the at->s_net access.\n\n KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:aarp_send_ddp (net/appletalk/aarp.c:552 (discriminator 2))\n Call Trace:\n  <TASK>\n  atalk_sendmsg (net/appletalk/ddp.c:1715)\n  __sys_sendto (net/socket.c:2265 (discriminator 1))\n  __x64_sys_sendto (net/socket.c:2272)\n  do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nAdd a NULL check consistent with the other callers of\natalk_find_dev_addr().\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":[]}