CVE-2024-39277: dma-mapping: benchmark: handle NUMA_NO_NODE correctly
First published: Fri Jun 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: dma-mapping: benchmark: handle NUMA_NO_NODE correctly cpumask_of_node() can be called for NUMA_NO_NODE inside do_map_benchmark() resulting in the following sanitizer report: UBSAN: array-index-out-of-bounds in ./arch/x86/include/asm/topology.h:72:28 index -1 is out of range for type 'cpumask [64][1]' CPU: 1 PID: 990 Comm: dma_map_benchma Not tainted 6.9.0-rc6 #29 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl (lib/dump_stack.c:117) ubsan_epilogue (lib/ubsan.c:232) __ubsan_handle_out_of_bounds (lib/ubsan.c:429) cpumask_of_node (arch/x86/include/asm/topology.h:72) [inline] do_map_benchmark (kernel/dma/map_benchmark.c:104) map_benchmark_ioctl (kernel/dma/map_benchmark.c:246) full_proxy_unlocked_ioctl (fs/debugfs/file.c:333) __x64_sys_ioctl (fs/ioctl.c:890) do_syscall_64 (arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Use cpumask_of_node() in place when binding a kernel thread to a cpuset of a particular node. Note that the provided node id is checked inside map_benchmark_ioctl(). It's just a NUMA_NO_NODE case which is not handled properly later. Found by Linux Verification Center (linuxtesting.org).
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.11 | |
| Linux Kernel | >=5.15<5.15.161 | |
| Linux Kernel | >=6.1<6.1.93 | |
| Linux Kernel | >=6.6<6.6.33 | |
| Linux Kernel | >=6.9<6.9.4 | |
| Linux Kernel | =6.10.0-rc1 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 |
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Reference Links
- https://git.kernel.org/stable/c/50ee21bfc005e69f183d6b4b454e33f0c2571e1f
- https://git.kernel.org/stable/c/5a91116b003175302f2e6ad94b76fb9b5a141a41
- https://git.kernel.org/stable/c/8e1ba9df9a35e8dc64f657a64e523c79ba01e464
- https://git.kernel.org/stable/c/b41b0018e8ca06e985e87220a618ec633988fd13
- https://git.kernel.org/stable/c/e64746e74f717961250a155e14c156616fcd981f
- https://launchpad.net/bugs/cve/CVE-2024-39277
- https://git.kernel.org/linus/e64746e74f717961250a155e14c156616fcd981f
- https://security-tracker.debian.org/tracker/CVE-2024-39277
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-39277
- https://nvd.nist.gov/vuln/detail/CVE-2024-39277
- https://ubuntu.com/security/CVE-2024-39277
Frequently Asked Questions
What is the severity of CVE-2024-39277?
CVE-2024-39277 has been classified as a medium severity vulnerability due to potential impacts on system stability.
Which versions of the Linux kernel are affected by CVE-2024-39277?
CVE-2024-39277 affects Linux kernel versions below 5.11, between 5.15 and 5.15.161, between 6.1 and 6.1.93, between 6.6 and 6.6.33, and between 6.9 and 6.9.4.
How do I fix CVE-2024-39277?
To mitigate CVE-2024-39277, upgrade to a patched version of the Linux kernel, specifically 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.10-1, or 6.12.11-1.
What is the impact of exploiting CVE-2024-39277?
Exploitation of CVE-2024-39277 could lead to undefined behavior, including array index out-of-bounds errors, affecting system stability.
Is there a workaround for CVE-2024-39277?
There are no official workarounds for CVE-2024-39277, so upgrading to a secure kernel version is recommended.
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