{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-26875", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pvrusb2: fix uaf in pvr2_context_set_notify\n\n[Syzbot reported]\nBUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35\nRead of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26\n\nCPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\nWorkqueue: usb_hub_wq hub_event\nCall Trace:\n \n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0xc4/0x620 mm/kasan/report.c:488\n kasan_report+0xda/0x110 mm/kasan/report.c:601\n pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35\n pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline]\n pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272\n\nFreed by task 906:\nkasan_save_stack+0x33/0x50 mm/kasan/common.c:47\nkasan_save_track+0x14/0x30 mm/kasan/common.c:68\nkasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640\npoison_slab_object mm/kasan/common.c:241 [inline]\n__kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257\nkasan_slab_free include/linux/kasan.h:184 [inline]\nslab_free_hook mm/slub.c:2121 [inline]\nslab_free mm/slub.c:4299 [inline]\nkfree+0x105/0x340 mm/slub.c:4409\npvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline]\npvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158\n\n[Analyze]\nTask A set disconnect_flag = !0, which resulted in Task B's condition being met\nand releasing mp, leading to this issue.\n\n[Fix]\nPlace the disconnect_flag assignment operation after all code in pvr2_context_disconnect()\nto avoid this issue." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "e5be15c63804", "version_value": "ed8000e1e8e9" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "2.6.26", "status": "affected" }, { "version": "0", "lessThan": "2.6.26", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.311", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.273", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.214", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.153", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/ed8000e1e8e9684ab6c30cf2b526c0cea039929c" }, { "url": "https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/d29ed08964cec8b9729bc55c7bb23f679d7a18fb" }, { "url": "https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/ab896d93fd6a2cd1afeb034c3cc9226cb499209f" }, { "url": "https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/eb6e9dce979c08210ff7249e5e0eceb8991bfcd7" }, { "url": "https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/3a1ec89708d2e57e2712f46241282961b1a7a475" }, { "url": "https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/8e60b99f6b7ccb3badeb512f5eb613ad45904592" }, { "url": "https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/40cd818fae875c424a8335009db33c7b5a07de3a" }, { "url": "https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/eaa410e05bdf562c90b23cdf2d9327f9c4625e16" }, { "url": "https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/0a0b79ea55de8514e1750884e5fec77f9fdd01ee" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "refsource": "MISC", "name": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html" } ] }, "generator": { "engine": "bippy-a5840b7849dd" } }