cbcvebase.
CVE-2024-46740
published 2024-09-18

CVE-2024-46740: In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF caused by offsets overwrite Binder objects are processed and copied…

PriorityP341high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.29%
21.2th percentile
In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF caused by offsets overwrite Binder objects are processed and copied individually into the target buffer during transactions. Any raw data in-between these objects is copied as well. However, this raw data copy lacks an out-of-bounds check. If the raw data exceeds the data section size then the copy overwrites the offsets section. This eventually triggers an error that attempts to unwind the processed objects. However, at this point the offsets used to index these objects are now corrupted. Unwinding with corrupted offsets can result in decrements of arbitrary nodes and lead to their premature release. Other users of such nodes are left with a dangling pointer triggering a use-after-free. This issue is made evident by the following KASAN report (trimmed): BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x19c Write of size 4 at addr ffff47fc91598f04 by task binder-util/743 CPU: 9 UID: 0 PID: 743 Comm: binder-util Not tainted 6.11.0-rc4 #1 Hardware name: linux,dummy-virt (DT) Call trace: _raw_spin_lock+0xe4/0x19c binder_free_buf+0x128/0x434 binder_thread_write+0x8a4/0x3260 binder_ioctl+0x18f0/0x258c [...] Allocated by task 743: __kmalloc_cache_noprof+0x110/0x270 binder_new_node+0x50/0x700 binder_transaction+0x413c/0x6da8 binder_thread_write+0x978/0x3260 binder_ioctl+0x18f0/0x258c [...] Freed by task 745: kfree+0xbc/0x208 binder_thread_read+0x1c5c/0x37d4 binder_ioctl+0x16d8/0x258c [...] To avoid this issue, let's check that the raw data copy is within the boundaries of the data section.

Affected

38 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.112-1 (bookworm)linux 6.1.112-1 (bookworm)
debianlinux-6.1< linux 6.1.112-1 (bookworm)linux 6.1.112-1 (bookworm)
googleandroid
linuxlinux
linuxlinux
linuxlinux>= 23e9d815fad84c1bee3742a8de4bd39510435362 < 3a8154bb4ab4a01390a3abf1e6afac296e037da43a8154bb4ab4a01390a3abf1e6afac296e037da4
linuxlinux>= 5.10.157 < 5.10.2265.10.226
linuxlinux>= 5.15.17 < 5.15.1675.15.167
linuxlinux>= 5.16.3 < 5.175.17
linuxlinux>= 5.4.226 < 5.4.2845.4.284
linuxlinux>= 6d98eb95b450a75adb4516a1d33652dc78d2b20c < 4f79e0b80dc69bd5eaaed70f0df1b558728b4e594f79e0b80dc69bd5eaaed70f0df1b558728b4e59
linuxlinux>= 6d98eb95b450a75adb4516a1d33652dc78d2b20c < 1f33d9f1d9ac3f0129f8508925000900c2fe5bb01f33d9f1d9ac3f0129f8508925000900c2fe5bb0
linuxlinux>= 6d98eb95b450a75adb4516a1d33652dc78d2b20c < 109e845c1184c9f786d41516348ba3efd9112792109e845c1184c9f786d41516348ba3efd9112792
linuxlinux>= 6d98eb95b450a75adb4516a1d33652dc78d2b20c < 4df153652cc46545722879415937582028c18af54df153652cc46545722879415937582028c18af5
linuxlinux>= 7a9ad4aceb0226b391c9d3b8e4ac2e7d438b6bde < eef79854a04feac5b861f94d7b19cbbe79874117eef79854a04feac5b861f94d7b19cbbe79874117
linuxlinux>= c056a6ba35e00ae943e377eb09abd77a6915b31a < 5a32bfd23022ffa7e152f273fa3fa29befb7d9295a32bfd23022ffa7e152f273fa3fa29befb7d929
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.226-15.10.226-1
linuxlinux_kernel>= 0 < 6.1.112-16.1.112-1
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 6.10.11-16.10.11-1
linuxlinux_kernel>= 0 < 5.4.0-200.2205.4.0-200.220
linuxlinux_kernel>= 0 < 5.15.0-125.1355.15.0-125.135
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 5.10.157 < 5.10.2265.10.226

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
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