ghsa-rf6j-8jq6-g935
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
crypto: sun8i-ce - Fix use after free in unprepare
sun8i_ce_cipher_unprepare should be called before crypto_finalize_skcipher_request, because client callbacks may immediately free memory, that isn't needed anymore. But it will be used by unprepare after free. Before removing prepare/unprepare callbacks it was handled by crypto engine in crypto_finalize_request.
Usually that results in a pointer dereference problem during a in crypto selftest. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030 Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000000004716d000 [0000000000000030] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] SMP
This problem is detected by KASAN as well. ================================================================== BUG: KASAN: slab-use-after-free in sun8i_ce_cipher_do_one+0x6e8/0xf80 [sun8i_ce] Read of size 8 at addr ffff00000dcdc040 by task 1c15000.crypto-/373
Hardware name: Pine64 PinePhone (1.2) (DT) Call trace: dump_backtrace+0x9c/0x128 show_stack+0x20/0x38 dump_stack_lvl+0x48/0x60 print_report+0xf8/0x5d8 kasan_report+0x90/0xd0 __asan_load8+0x9c/0xc0 sun8i_ce_cipher_do_one+0x6e8/0xf80 [sun8i_ce] crypto_pump_work+0x354/0x620 [crypto_engine] kthread_worker_fn+0x244/0x498 kthread+0x168/0x178 ret_from_fork+0x10/0x20
Allocated by task 379: kasan_save_stack+0x3c/0x68 kasan_set_track+0x2c/0x40 kasan_save_alloc_info+0x24/0x38 __kasan_kmalloc+0xd4/0xd8 __kmalloc+0x74/0x1d0 alg_test_skcipher+0x90/0x1f0 alg_test+0x24c/0x830 cryptomgr_test+0x38/0x60 kthread+0x168/0x178 ret_from_fork+0x10/0x20
Freed by task 379: kasan_save_stack+0x3c/0x68 kasan_set_track+0x2c/0x40 kasan_save_free_info+0x38/0x60 __kasan_slab_free+0x100/0x170 slab_free_freelist_hook+0xd4/0x1e8 __kmem_cache_free+0x15c/0x290 kfree+0x74/0x100 kfree_sensitive+0x80/0xb0 alg_test_skcipher+0x12c/0x1f0 alg_test+0x24c/0x830 cryptomgr_test+0x38/0x60 kthread+0x168/0x178 ret_from_fork+0x10/0x20
The buggy address belongs to the object at ffff00000dcdc000 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 64 bytes inside of freed 256-byte region [ffff00000dcdc000, ffff00000dcdc100)
{
"affected": [],
"aliases": [
"CVE-2024-27061"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-01T13:15:50Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: sun8i-ce - Fix use after free in unprepare\n\nsun8i_ce_cipher_unprepare should be called before\ncrypto_finalize_skcipher_request, because client callbacks may\nimmediately free memory, that isn\u0027t needed anymore. But it will be\nused by unprepare after free. Before removing prepare/unprepare\ncallbacks it was handled by crypto engine in crypto_finalize_request.\n\nUsually that results in a pointer dereference problem during a in\ncrypto selftest.\n Unable to handle kernel NULL pointer dereference at\n virtual address 0000000000000030\n Mem abort info:\n ESR = 0x0000000096000004\n EC = 0x25: DABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x04: level 0 translation fault\n Data abort info:\n ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n user pgtable: 4k pages, 48-bit VAs, pgdp=000000004716d000\n [0000000000000030] pgd=0000000000000000, p4d=0000000000000000\n Internal error: Oops: 0000000096000004 [#1] SMP\n\nThis problem is detected by KASAN as well.\n ==================================================================\n BUG: KASAN: slab-use-after-free in sun8i_ce_cipher_do_one+0x6e8/0xf80 [sun8i_ce]\n Read of size 8 at addr ffff00000dcdc040 by task 1c15000.crypto-/373\n\n Hardware name: Pine64 PinePhone (1.2) (DT)\n Call trace:\n dump_backtrace+0x9c/0x128\n show_stack+0x20/0x38\n dump_stack_lvl+0x48/0x60\n print_report+0xf8/0x5d8\n kasan_report+0x90/0xd0\n __asan_load8+0x9c/0xc0\n sun8i_ce_cipher_do_one+0x6e8/0xf80 [sun8i_ce]\n crypto_pump_work+0x354/0x620 [crypto_engine]\n kthread_worker_fn+0x244/0x498\n kthread+0x168/0x178\n ret_from_fork+0x10/0x20\n\n Allocated by task 379:\n kasan_save_stack+0x3c/0x68\n kasan_set_track+0x2c/0x40\n kasan_save_alloc_info+0x24/0x38\n __kasan_kmalloc+0xd4/0xd8\n __kmalloc+0x74/0x1d0\n alg_test_skcipher+0x90/0x1f0\n alg_test+0x24c/0x830\n cryptomgr_test+0x38/0x60\n kthread+0x168/0x178\n ret_from_fork+0x10/0x20\n\n Freed by task 379:\n kasan_save_stack+0x3c/0x68\n kasan_set_track+0x2c/0x40\n kasan_save_free_info+0x38/0x60\n __kasan_slab_free+0x100/0x170\n slab_free_freelist_hook+0xd4/0x1e8\n __kmem_cache_free+0x15c/0x290\n kfree+0x74/0x100\n kfree_sensitive+0x80/0xb0\n alg_test_skcipher+0x12c/0x1f0\n alg_test+0x24c/0x830\n cryptomgr_test+0x38/0x60\n kthread+0x168/0x178\n ret_from_fork+0x10/0x20\n\n The buggy address belongs to the object at ffff00000dcdc000\n which belongs to the cache kmalloc-256 of size 256\n The buggy address is located 64 bytes inside of\n freed 256-byte region [ffff00000dcdc000, ffff00000dcdc100)",
"id": "GHSA-rf6j-8jq6-g935",
"modified": "2024-05-01T15:30:36Z",
"published": "2024-05-01T15:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27061"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/183420038444547c149a0fc5f58e792c2752860c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/51a7d338c212e0640b1aca52ba6590d5bea49879"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dc60b25540c82fc4baa95d1458ae96ead21859e0"
}
],
"schema_version": "1.4.0",
"severity": []
}