ghsa-q624-v3v9-vmp4
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
ecryptfs: Fix buffer size for tag 66 packet
The 'TAG 66 Packet Format' description is missing the cipher code and checksum fields that are packed into the message packet. As a result, the buffer allocated for the packet is 3 bytes too small and write_tag_66_packet() will write up to 3 bytes past the end of the buffer.
Fix this by increasing the size of the allocation so the whole packet will always fit in the buffer.
This fixes the below kasan slab-out-of-bounds bug:
BUG: KASAN: slab-out-of-bounds in ecryptfs_generate_key_packet_set+0x7d6/0xde0 Write of size 1 at addr ffff88800afbb2a5 by task touch/181
CPU: 0 PID: 181 Comm: touch Not tainted 6.6.13-gnu #1 4c9534092be820851bb687b82d1f92a426598dc6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2/GNU Guix 04/01/2014
Call Trace:
Allocated by task 181: kasan_save_stack+0x2f/0x60 kasan_set_track+0x29/0x40 kasan_save_alloc_info+0x25/0x40 __kasan_kmalloc+0xc5/0xd0 __kmalloc+0x66/0x160 ecryptfs_generate_key_packet_set+0x6d2/0xde0 ecryptfs_write_metadata+0x30a/0x550 ecryptfs_initialize_file+0x77/0x150 ecryptfs_create+0x1c2/0x2f0 path_openat+0x17cf/0x1ba0 do_filp_open+0x15e/0x290 do_sys_openat2+0x122/0x160 __x64_sys_openat+0xef/0x170 do_syscall_64+0x60/0xd0 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
{
"affected": [],
"aliases": [
"CVE-2024-38578"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-19T14:15:17Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: Fix buffer size for tag 66 packet\n\nThe \u0027TAG 66 Packet Format\u0027 description is missing the cipher code and\nchecksum fields that are packed into the message packet. As a result,\nthe buffer allocated for the packet is 3 bytes too small and\nwrite_tag_66_packet() will write up to 3 bytes past the end of the\nbuffer.\n\nFix this by increasing the size of the allocation so the whole packet\nwill always fit in the buffer.\n\nThis fixes the below kasan slab-out-of-bounds bug:\n\n BUG: KASAN: slab-out-of-bounds in ecryptfs_generate_key_packet_set+0x7d6/0xde0\n Write of size 1 at addr ffff88800afbb2a5 by task touch/181\n\n CPU: 0 PID: 181 Comm: touch Not tainted 6.6.13-gnu #1 4c9534092be820851bb687b82d1f92a426598dc6\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2/GNU Guix 04/01/2014\n Call Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x4c/0x70\n print_report+0xc5/0x610\n ? ecryptfs_generate_key_packet_set+0x7d6/0xde0\n ? kasan_complete_mode_report_info+0x44/0x210\n ? ecryptfs_generate_key_packet_set+0x7d6/0xde0\n kasan_report+0xc2/0x110\n ? ecryptfs_generate_key_packet_set+0x7d6/0xde0\n __asan_store1+0x62/0x80\n ecryptfs_generate_key_packet_set+0x7d6/0xde0\n ? __pfx_ecryptfs_generate_key_packet_set+0x10/0x10\n ? __alloc_pages+0x2e2/0x540\n ? __pfx_ovl_open+0x10/0x10 [overlay 30837f11141636a8e1793533a02e6e2e885dad1d]\n ? dentry_open+0x8f/0xd0\n ecryptfs_write_metadata+0x30a/0x550\n ? __pfx_ecryptfs_write_metadata+0x10/0x10\n ? ecryptfs_get_lower_file+0x6b/0x190\n ecryptfs_initialize_file+0x77/0x150\n ecryptfs_create+0x1c2/0x2f0\n path_openat+0x17cf/0x1ba0\n ? __pfx_path_openat+0x10/0x10\n do_filp_open+0x15e/0x290\n ? __pfx_do_filp_open+0x10/0x10\n ? __kasan_check_write+0x18/0x30\n ? _raw_spin_lock+0x86/0xf0\n ? __pfx__raw_spin_lock+0x10/0x10\n ? __kasan_check_write+0x18/0x30\n ? alloc_fd+0xf4/0x330\n do_sys_openat2+0x122/0x160\n ? __pfx_do_sys_openat2+0x10/0x10\n __x64_sys_openat+0xef/0x170\n ? __pfx___x64_sys_openat+0x10/0x10\n do_syscall_64+0x60/0xd0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n RIP: 0033:0x7f00a703fd67\n Code: 25 00 00 41 00 3d 00 00 41 00 74 37 64 8b 04 25 18 00 00 00 85 c0 75 5b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 0f 87 85 00 00 00 48 83 c4 68 5d 41 5c c3 0f 1f\n RSP: 002b:00007ffc088e30b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101\n RAX: ffffffffffffffda RBX: 00007ffc088e3368 RCX: 00007f00a703fd67\n RDX: 0000000000000941 RSI: 00007ffc088e48d7 RDI: 00000000ffffff9c\n RBP: 00007ffc088e48d7 R08: 0000000000000001 R09: 0000000000000000\n R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000941\n R13: 0000000000000000 R14: 00007ffc088e48d7 R15: 00007f00a7180040\n \u003c/TASK\u003e\n\n Allocated by task 181:\n kasan_save_stack+0x2f/0x60\n kasan_set_track+0x29/0x40\n kasan_save_alloc_info+0x25/0x40\n __kasan_kmalloc+0xc5/0xd0\n __kmalloc+0x66/0x160\n ecryptfs_generate_key_packet_set+0x6d2/0xde0\n ecryptfs_write_metadata+0x30a/0x550\n ecryptfs_initialize_file+0x77/0x150\n ecryptfs_create+0x1c2/0x2f0\n path_openat+0x17cf/0x1ba0\n do_filp_open+0x15e/0x290\n do_sys_openat2+0x122/0x160\n __x64_sys_openat+0xef/0x170\n do_syscall_64+0x60/0xd0\n entry_SYSCALL_64_after_hwframe+0x6e/0xd8",
"id": "GHSA-q624-v3v9-vmp4",
"modified": "2024-06-27T12:30:47Z",
"published": "2024-06-19T15:30:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38578"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0d0f8ba042af16519f1ef7dd10463a33b21b677c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/12db25a54ce6bb22b0af28010fff53ef9cb3fe93"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1c125b9287e58f364d82174efb167414b92b11f1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/235b85981051cd68fc215fd32a81c6f116bfc4df"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2ed750b7ae1b5dc72896d7dd114c419afd3d1910"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/85a6a1aff08ec9f5b929d345d066e2830e8818e5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a20f09452e2f58f761d11ad7b96b5c894c91030e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/edbfc42ab080e78c6907d40a42c9d10b69e445c1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f6008487f1eeb8693f8d2a36a89c87d9122ddf74"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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