CVE-2022-48922— riscv: fix oops caused by irqsoff latency tracer
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于trace_hardirqs_{on,off}函数没有正确设置帧指针。
Affected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 3c46979829824da5af8766d89fa877976bdae884< 9e2dbc31e367d08ee299a0d8aeb498cb2e12a1c3 |
affected |
3c46979829824da5af8766d89fa877976bdae884< 1851b9a467065b18ec2cba156eea345206df1c8f |
affected | ||
3c46979829824da5af8766d89fa877976bdae884< b5e180490db4af8c0f80c4b65ee482d333d0e8ee |
affected | ||
3c46979829824da5af8766d89fa877976bdae884< 22e2100b1b07d6f5acc71cc1acb53f680c677d77 |
affected | ||
5.9 |
affected | ||
< 5.9 |
unaffected | ||
5.10.103≤ 5.10.* |
unaffected | ||
5.15.26≤ 5.15.* |
unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2022-48922
Vulnerability Information
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Vulnerability Title
riscv: fix oops caused by irqsoff latency tracer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
riscv: fix oops caused by irqsoff latency tracer
The trace_hardirqs_{on,off}() require the caller to setup frame pointer
properly. This because these two functions use macro 'CALLER_ADDR1' (aka.
__builtin_return_address(1)) to acquire caller info. If the $fp is used
for other purpose, the code generated this macro (as below) could trigger
memory access fault.
0xffffffff8011510e <+80>: ld a1,-16(s0)
0xffffffff80115112 <+84>: ld s2,-8(a1) # <-- paging fault here
The oops message during booting if compiled with 'irqoff' tracer enabled:
[ 0.039615][ T0] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8
[ 0.041925][ T0] Oops [#1]
[ 0.042063][ T0] Modules linked in:
[ 0.042864][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1-00233-g9a20c48d1ed2 #29
[ 0.043568][ T0] Hardware name: riscv-virtio,qemu (DT)
[ 0.044343][ T0] epc : trace_hardirqs_on+0x56/0xe2
[ 0.044601][ T0] ra : restore_all+0x12/0x6e
[ 0.044721][ T0] epc : ffffffff80126a5c ra : ffffffff80003b94 sp : ffffffff81403db0
[ 0.044801][ T0] gp : ffffffff8163acd8 tp : ffffffff81414880 t0 : 0000000000000020
[ 0.044882][ T0] t1 : 0098968000000000 t2 : 0000000000000000 s0 : ffffffff81403de0
[ 0.044967][ T0] s1 : 0000000000000000 a0 : 0000000000000001 a1 : 0000000000000100
[ 0.045046][ T0] a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000
[ 0.045124][ T0] a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000054494d45
[ 0.045210][ T0] s2 : ffffffff80003b94 s3 : ffffffff81a8f1b0 s4 : ffffffff80e27b50
[ 0.045289][ T0] s5 : ffffffff81414880 s6 : ffffffff8160fa00 s7 : 00000000800120e8
[ 0.045389][ T0] s8 : 0000000080013100 s9 : 000000000000007f s10: 0000000000000000
[ 0.045474][ T0] s11: 0000000000000000 t3 : 7fffffffffffffff t4 : 0000000000000000
[ 0.045548][ T0] t5 : 0000000000000000 t6 : ffffffff814aa368
[ 0.045620][ T0] status: 0000000200000100 badaddr: 00000000000000f8 cause: 000000000000000d
[ 0.046402][ T0] [<ffffffff80003b94>] restore_all+0x12/0x6e
This because the $fp(aka. $s0) register is not used as frame pointer in the
assembly entry code.
resume_kernel:
REG_L s0, TASK_TI_PREEMPT_COUNT(tp)
bnez s0, restore_all
REG_L s0, TASK_TI_FLAGS(tp)
andi s0, s0, _TIF_NEED_RESCHED
beqz s0, restore_all
call preempt_schedule_irq
j restore_all
To fix above issue, here we add one extra level wrapper for function
trace_hardirqs_{on,off}() so they can be safely called by low level entry
code.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于trace_hardirqs_{on,off}函数没有正确设置帧指针。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-48922
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2022-48922 (4)
Same Patch Batch · Linux · 2024-08-22 · 42 CVEs total
| CVE-2022-48941 | 8.8 HIGH | ice: fix concurrent reset and removal of VFs |
| CVE-2022-48919 | 8.8 HIGH | cifs: fix double free race when mount fails in cifs_get_root() |
| CVE-2022-48925 | 7.8 HIGH | RDMA/cma: Do not change route.addr.src_addr outside state checks |
| CVE-2022-48923 | 7.8 HIGH | btrfs: prevent copying too big compressed lzo segment |
| CVE-2022-48927 | 7.8 HIGH | iio: adc: tsc2046: fix memory corruption by preventing array overflow |
| CVE-2022-48913 | 7.8 HIGH | blktrace: fix use after free for struct blk_trace |
| CVE-2022-48912 | 7.8 HIGH | netfilter: fix use-after-free in __nf_register_net_hook() |
| CVE-2022-48911 | 7.8 HIGH | netfilter: nf_queue: fix possible use-after-free |
| CVE-2022-48932 | 7.8 HIGH | net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte |
| CVE-2022-48935 | 7.8 HIGH | netfilter: nf_tables: unregister flowtable hooks on netns exit |
| CVE-2022-48940 | 7.8 HIGH | bpf: Fix crash due to incorrect copy_map_value |
| CVE-2022-48943 | 7.1 HIGH | KVM: x86/mmu: make apf token non-zero to fix bug |
| CVE-2022-48933 | netfilter: nf_tables: fix memory leak during stateful obj update | |
| CVE-2022-48931 | configfs: fix a race in configfs_{,un}register_subsystem() | |
| CVE-2022-48934 | nfp: flower: Fix a potential leak in nfp_tunnel_add_shared_mac() | |
| CVE-2022-48937 | io_uring: add a schedule point in io_add_buffers() | |
| CVE-2022-48930 | RDMA/ib_srp: Fix a deadlock | |
| CVE-2022-48929 | bpf: Fix crash due to out of bounds access into reg2btf_ids. | |
| CVE-2022-48928 | iio: adc: men_z188_adc: Fix a resource leak in an error handling path | |
| CVE-2022-48938 | CDC-NCM: avoid overflow in sanity checking |
Showing top 20 of 42 CVEs. View all on vendor page → →
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Same vendor: Linux
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mptcp: avoid combining some incoming suboptions -
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V. Comments for CVE-2022-48922
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