{"id":"DEBIAN-CVE-2026-64599","details":"In the Linux kernel, the following vulnerability has been resolved:  crypto: amlogic - avoid double cleanup in meson_crypto_probe()  When meson_allocate_chanlist() fails after a partial allocation, it already unwinds the allocated chanlist state through its local error path. meson_crypto_probe() then jump to error_flow and calls meson_free_chanlist() again, causing the same per-flow resources to be torn down twice. In the reproduced failure path, the second teardown re-entered crypto_engine_exit() on an already destroyed worker and KASAN reported a slab-use-after-free in kthread_destroy_worker().  Prevent double-free by handling partial allocation failures locally within meson_allocate_chanlist() and skipping the outer cleanup path.  The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available.  The bug was reproduced in a QEMU x86_64 guest booted with KASAN on v7.1, using the reproducer under tools/testing/meson_crypto_probe. The reproducer forces the second dma_alloc_attrs() call in the gxl-crypto probe path to return NULL, making meson_allocate_chanlist() fail after partial initialization. On the unpatched kernel this reliably triggered a slab-use-after-free. With this fix applied, the same reproducer no longer emits any KASAN report and the probe fails cleanly with -ENOMEM.      ==================================================================     BUG: KASAN: slab-use-after-free in kthread_destroy_worker+0xb2/0xd0     Read of size 8 at addr ff1100010c057a68 by task insmod/265      CPU: 1 UID: 0 PID: 265 Comm: insmod Tainted: G           O        7.1.0-rc2-00376-g810af9adc907-dirty #10 PREEMPT(lazy)     Tainted: [O]=OOT_MODULE     Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014     Call Trace:      \u003cTASK\u003e      dump_stack_lvl+0x68/0xa0      print_report+0xcb/0x5e0      ? __virt_addr_valid+0x21d/0x3f0      ? kthread_destroy_worker+0xb2/0xd0      ? kthread_destroy_worker+0xb2/0xd0      kasan_report+0xca/0x100      ? kthread_destroy_worker+0xb2/0xd0      kthread_destroy_worker+0xb2/0xd0      meson_crypto_probe+0x4d0/0xc10 [amlogic_gxl_crypto]      platform_probe+0x99/0x140      really_probe+0x1c6/0x6a0      ? __pfx___device_attach_driver+0x10/0x10      __driver_probe_device+0x248/0x310      ? acpi_driver_match_device+0xb0/0x100      driver_probe_device+0x48/0x210      ? __pfx___device_attach_driver+0x10/0x10      __device_attach_driver+0x160/0x320      bus_for_each_drv+0x104/0x190      ? __pfx_bus_for_each_drv+0x10/0x10      ? _raw_spin_unlock_irqrestore+0x2c/0x50      __device_attach+0x19d/0x3b0      ? __pfx___device_attach+0x10/0x10      ? do_raw_spin_unlock+0x53/0x220      device_initial_probe+0x78/0xa0      bus_probe_device+0x5b/0x130      device_add+0xcfd/0x1430      ? __pfx_device_add+0x10/0x10      ? insert_resource+0x34/0x50      ? lock_release+0xc9/0x290      platform_device_add+0x24e/0x590      ? __pfx_meson_crypto_probe_repro_init+0x10/0x10 [meson_crypto_probe_repro]      meson_crypto_probe_repro_init+0x330/0xff0 [meson_crypto_probe_repro]      do_one_initcall+0xc0/0x450      ? __pfx_do_one_initcall+0x10/0x10      ? _raw_spin_unlock_irqrestore+0x2c/0x50      ? __create_object+0x59/0x80      ? kasan_unpoison+0x27/0x60      do_init_module+0x27b/0x7d0      ? __pfx_do_init_module+0x10/0x10      ? kasan_quarantine_put+0x84/0x1d0      ? kfree+0x32c/0x510      ? load_module+0x561e/0x5ff0      load_module+0x54fe/0x5ff0      ? __pfx_load_module+0x10/0x10      ? security_file_permission+0x20/0x40      ? kernel_read_file+0x23d/0x6e0      ? mmap_region+0x235/0x4a0      ? __pfx_kernel_read_file+0x10/0x10      ? __file_has_perm+0x2c0/0x3e0      init_module_from_file+0x158/0x180      ? __pfx_init_module_from_file+0x10/0x10      ? __lock_acquire+0x45a/0x1ba0      ? idempotent_init_module+0x315/0x610      ? lock_release+0xc9/0x290      ? lock ---truncated---","modified":"2026-09-01T16:06:56.599576647Z","published":"2026-08-06T08:16:35.603Z","upstream":["CVE-2026-64599"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-64599"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.180-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.147-1","6.1.148-1","6.1.153-1","6.1.158-1","6.1.159-1","6.1.162-1","6.1.164-1","6.1.170-1","6.1.170-2","6.1.170-3","6.1.172-1","6.1.174-1","6.1.176-1","6.1.177-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not 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