CVE-2024-57948: mac802154: check local interfaces before deleting sdata list
In the Linux kernel, the following vulnerability has been resolved:
mac802154: check local interfaces before deleting sdata list
syzkaller reported a corrupted list in ieee802154ifremove. [1]
Remove an IEEE 802.15.4 network interface after unregister an IEEE 802.15.4 hardware device from the system.
CPU0 CPU1 ==== ==== genlfamilyrcvmsgdoit ieee802154unregisterhw ieee802154deliface ieee802154removeinterfaces rdevdelvirtualintfdeprecated listdel(&sdata->list) ieee802154ifremove listdelrcu
The net device has been unregistered, since the rcu grace period, unregistration must be run before ieee802154ifremove.
To avoid this issue, add a check for local->interfaces before deleting sdata list.
[1] kernel BUG at lib/listdebug.c:58! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6277 Comm: syz-executor157 Not tainted 6.12.0-rc6-syzkaller-00005-g557329bcecc2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:listdelentryvalidorreport+0xf4/0x140 lib/listdebug.c:56 Code: e8 a1 7e 00 07 90 0f 0b 48 c7 c7 e0 37 60 8c 4c 89 fe e8 8f 7e 00 07 90 0f 0b 48 c7 c7 40 38 60 8c 4c 89 fe e8 7d 7e 00 07 90 <0f> 0b 48 c7 c7 a0 38 60 8c 4c 89 fe e8 6b 7e 00 07 90 0f 0b 48 c7 RSP: 0018:ffffc9000490f3d0 EFLAGS: 00010246 RAX: 000000000000004e RBX: dead000000000122 RCX: d211eee56bb28d00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff88805b278dd8 R08: ffffffff8174a12c R09: 1ffffffff2852f0d R10: dffffc0000000000 R11: fffffbfff2852f0e R12: dffffc0000000000 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88805b278cc0 FS: 0000555572f94380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056262e4a3000 CR3: 0000000078496000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> listdelentryvalid include/linux/list.h:124 [inline] listdelentry include/linux/list.h:215 [inline] listdelrcu include/linux/rculist.h:157 [inline] ieee802154ifremove+0x86/0x1e0 net/mac802154/iface.c:687 rdevdelvirtualintfdeprecated net/ieee802154/rdev-ops.h:24 [inline] ieee802154deliface+0x2c0/0x5c0 net/ieee802154/nl-phy.c:323 genlfamilyrcvmsgdoit net/netlink/genetlink.c:1115 [inline] genlfamilyrcvmsg net/netlink/genetlink.c:1195 [inline] genlrcvmsg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlinkrcvskb+0x1e3/0x430 net/netlink/afnetlink.c:2551 genlrcv+0x28/0x40 net/netlink/genetlink.c:1219 netlinkunicastkernel net/netlink/afnetlink.c:1331 [inline] netlinkunicast+0x7f6/0x990 net/netlink/afnetlink.c:1357 netlinksendmsg+0x8e4/0xcb0 net/netlink/afnetlink.c:1901 socksendmsgnosec net/socket.c:729 [inline] socksendmsg+0x221/0x270 net/socket.c:744 syssendmsg+0x52a/0x7e0 net/socket.c:2607 syssendmsg net/socket.c:2661 [inline] syssendmsg+0x292/0x380 net/socket.c:2690 dosyscallx64 arch/x86/entry/common.c:52 [inline] dosyscall64+0xf3/0x230 arch/x86/entry/common.c:83 entrySYSCALL64afterhwframe+0x77/0x7f
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-57948?
CVE-2024-57948 is classified as a moderate severity vulnerability due to its impact on local interfaces in the Linux kernel.
How do I fix CVE-2024-57948?
To fix CVE-2024-57948, update the Linux kernel to the latest patched version provided by your distribution.
What vulnerabilities does CVE-2024-57948 address?
CVE-2024-57948 addresses issues related to corrupted lists in ieee802154_if_remove within the mac802154 subsystem.
Which version of the Linux kernel is affected by CVE-2024-57948?
CVE-2024-57948 affects various versions of the Linux kernel that use the mac802154 subsystem.
Is there a workaround for CVE-2024-57948?
There are no recommended workarounds for CVE-2024-57948, and the best course of action is to apply the security updates.