7.5

CVE-2022-49670: linux Divide By Zero

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2022-49670DEBIAN-CVE-2022-49670
Published 26-02-2025Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2022-49670 is a high (CVSS 7.5) Divide By Zero vulnerability in linux. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 52.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.72%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 6
RHSA-2025:20518RHSA-2026:73645RHSA-2026:74174RHSA-2026:77214RHSA-2026:77215SUSE-SU-2025:1027-1

Timeline

  1. 26-02-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: linux/dim: Fix divide by 0 in RDMA DIM Fix a divide 0 error in rdma_dim_stats_compare() when prev->cpe_ratio == 0. CallTrace: Hardware name: H3C R4900 G3/RS33M2C9S, BIOS 2.00.37P21 03/12/2020 task: ffff880194b78000 task.stack: ffffc90006714000 RIP: 0010:backport_rdma_dim+0x10e/0x240 [mlx_compat] RSP: 0018:ffff880c10e83ec0 EFLAGS: 00010202 RAX: 0000000000002710 RBX: ffff88096cd7f780 RCX: 0000000000000064 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 000000001d7c6c09 R13: ffff88096cd7f780 R14: ffff880b174fe800 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff880c10e80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000a0965b00 CR3: 000000000200a003 CR4: 00000000007606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <IRQ> ib_poll_handler+0x43/0x80 [ib_core] irq_poll_softirq+0xae/0x110 __do_softirq+0xd1/0x28c irq_exit+0xde/0xf0 do_IRQ+0x54/0xe0 common_interrupt+0x8f/0x8f </IRQ> ? cpuidle_enter_state+0xd9/0x2a0 ? cpuidle_enter_state+0xc7/0x2a0 ? do_idle+0x170/0x1d0 ? cpu_startup_entry+0x6f/0x80 ? start_secondary+0x1b9/0x210 ? secondary_startup_64+0xa5/0xb0 Code: 0f 87 e1 00 00 00 8b 4c 24 14 44 8b 43 14 89 c8 4d 63 c8 44 29 c0 99 31 d0 29 d0 31 d2 48 98 48 8d 04 80 48 8d 04 80 48 c1 e0 02 <49> f7 f1 48 83 f8 0a 0f 86 c1 00 00 00 44 39 c1 7f 10 48 89 df RIP: backport_rdma_dim+0x10e/0x240 [mlx_compat] RSP: ffff880c10e83ec0

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.72%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

0.00 pp

From 0.72% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.72%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu107 products
  • linux< 5.4.0-128.144 | < 5.15.0-48.54
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1086.93 | < 5.15.0-1020.24
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ f4915455dcf07c4f237d6160a4b6adb0575d2909, < 5af106f8e072aebd88b95e164a08fa320651a99a | ≥ f4915455dcf07c4f237d6160a4b6adb0575d2909, < fae2a9fb1eaf348ad8732f90d42ebbb971bd7e95 | ≥ f4915455dcf07c4f237d6160a4b6adb0575d2909, < 0b6e0eb5c45e79e9095de2498cc0ca5ec563fc5e | ≥ f4915455dcf07c4f237d6160a4b6adb0575d2909, < 7c1963391af51ee322378d1b2849c60e9037f069 | ≥ f4915455dcf07c4f237d6160a4b6adb0575d2909, < 0fe3dbbefb74a8575f61d7801b08dbc50523d60d | 5.3
  • linux_kernel≥ 5.3, < 5.4.204 | ≥ 5.5, < 5.10.129 | ≥ 5.11, < 5.15.53 | ≥ 5.16, < 5.18.10 | 5.19:rc1 | 5.19:rc2 | 5.19:rc3 | 5.19:rc4
Debian1 product
  • linux< 5.18.14-1

3 vendors · 110 products

References

9 links