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CVE-2022-48922— riscv: fix oops caused by irqsoff latency tracer

EPSS 0.03% · P10
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 3c46979829824da5af8766d89fa877976bdae884 ~ 9e2dbc31e367d08ee299a0d8aeb498cb2e12a1c3 -
LinuxLinux 5.9 -

II. Public POCs for CVE-2022-48922

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III. Intelligence Information for CVE-2022-48922

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Same Patch Batch · Linux · 2024-08-22 · 42 CVEs total

CVE-2022-48931configfs: fix a race in configfs_{,un}register_subsystem()
CVE-2022-48923btrfs: prevent copying too big compressed lzo segment
CVE-2022-48924thermal: int340x: fix memory leak in int3400_notify()
CVE-2022-48925RDMA/cma: Do not change route.addr.src_addr outside state checks
CVE-2022-48942hwmon: Handle failure to register sensor with thermal zone correctly
CVE-2022-48943KVM: x86/mmu: make apf token non-zero to fix bug
CVE-2022-48926usb: gadget: rndis: add spinlock for rndis response list
CVE-2022-48927iio: adc: tsc2046: fix memory corruption by preventing array overflow
CVE-2022-48928iio: adc: men_z188_adc: Fix a resource leak in an error handling path
CVE-2022-48929bpf: Fix crash due to out of bounds access into reg2btf_ids.
CVE-2022-48930RDMA/ib_srp: Fix a deadlock
CVE-2022-48921sched/fair: Fix fault in reweight_entity
CVE-2022-48932net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte
CVE-2022-48933netfilter: nf_tables: fix memory leak during stateful obj update
CVE-2022-48934nfp: flower: Fix a potential leak in nfp_tunnel_add_shared_mac()
CVE-2022-48935netfilter: nf_tables: unregister flowtable hooks on netns exit
CVE-2022-48937io_uring: add a schedule point in io_add_buffers()
CVE-2022-48938CDC-NCM: avoid overflow in sanity checking
CVE-2022-48939bpf: Add schedule points in batch ops
CVE-2022-48940bpf: Fix crash due to incorrect copy_map_value

Showing top 20 of 42 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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