{"id":"CVE-2026-93286","published":"2026-09-24T17:17:09.810","lastModified":"2026-09-24T17:17:09.810","description":"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. 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().","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/83899a056aeb120898a6e3a989971fc63e274e2e","tags":[]},{"url":"https://git.kernel.org/stable/c/8fc30f0cdf4207a5aa2341c0a98d0f1713b3ce2c","tags":[]},{"url":"https://git.kernel.org/stable/c/9e7f36ab5b7bf68463faa5f7b926fea8f35597bb","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}