crypto: amlogic - avoid double cleanup in meson_crypto_probe()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64599
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-06 08:16:35 UTC
Updated2026-08-06 08:16:35 UTC
DescriptionIn 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: <TASK> 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---

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 48fe583fe54177bfb80f348e2a5cc34c3f710095 c2c48aa7a6be36d4c93da75d14d4b4f2f4168c81 git Not specified
CNA Linux Linux affected 48fe583fe54177bfb80f348e2a5cc34c3f710095 c80360b4e85099fc3835378a96a59c0a2480fb07 git Not specified
CNA Linux Linux affected 48fe583fe54177bfb80f348e2a5cc34c3f710095 5b452019a4127f63c1f2147237fc287d1581f606 git Not specified
CNA Linux Linux affected 48fe583fe54177bfb80f348e2a5cc34c3f710095 f30e2b879bda14bc3e1524fba6f8ab9ec119da90 git Not specified
CNA Linux Linux affected 48fe583fe54177bfb80f348e2a5cc34c3f710095 6effdbaca3cd8354540bdf42c7f5fb84412afeb7 git Not specified
CNA Linux Linux affected 48fe583fe54177bfb80f348e2a5cc34c3f710095 84a00be9b736aa5dce902a290f62cbbbdcfab9ed git Not specified
CNA Linux Linux affected 48fe583fe54177bfb80f348e2a5cc34c3f710095 6dda8406d8a3da2519c8b388d443d7357839cb63 git Not specified
CNA Linux Linux affected 48fe583fe54177bfb80f348e2a5cc34c3f710095 6d827ade51a24e18d81afb9f32756d339520a14c git Not specified
CNA Linux Linux affected 5.5 Not specified
CNA Linux Linux unaffected 5.5 semver Not specified
CNA Linux Linux unaffected 5.10.261 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.96 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.39 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.4 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/c80360b4e85099fc3835378a96a59c0a2480fb07 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5b452019a4127f63c1f2147237fc287d1581f606 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6effdbaca3cd8354540bdf42c7f5fb84412afeb7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6d827ade51a24e18d81afb9f32756d339520a14c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6dda8406d8a3da2519c8b388d443d7357839cb63 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f30e2b879bda14bc3e1524fba6f8ab9ec119da90 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/84a00be9b736aa5dce902a290f62cbbbdcfab9ed 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c2c48aa7a6be36d4c93da75d14d4b4f2f4168c81 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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