7.1

CVE-2022-48714: bpf: Use VM_MAP instead of VM_ALLOC for ringbuf

Analyzed
AliasesUBUNTU-CVE-2022-48714DEBIAN-CVE-2022-48714
Published 20-06-2024Last modified 11-05-2026

Vulnerability summary

CVE-2022-48714 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.1/10
010
High · v3.1 (NVD)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
SUSE-SU-2024:2372-1SUSE-SU-2024:2394-1SUSE-SU-2024:2939-1

Timeline

  1. 20-06-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Use VM_MAP instead of VM_ALLOC for ringbuf After commit 2fd3fb0be1d1 ("kasan, vmalloc: unpoison VM_ALLOC pages after mapping"), non-VM_ALLOC mappings will be marked as accessible in __get_vm_area_node() when KASAN is enabled. But now the flag for ringbuf area is VM_ALLOC, so KASAN will complain out-of-bound access after vmap() returns. Because the ringbuf area is created by mapping allocated pages, so use VM_MAP instead. After the change, info in /proc/vmallocinfo also changes from [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmalloc user to [start]-[end] 24576 ringbuf_map_alloc+0x171/0x290 vmap user

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu66 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 457f44363a8894135c85b7a9afd2bd8196db24ab, < 6304a613a97d6dcd49b93fbad31e9f39d1e138d6 | ≥ 457f44363a8894135c85b7a9afd2bd8196db24ab, < 5e457aeab52a5947619e1f18047f4d2f3212b3eb | ≥ 457f44363a8894135c85b7a9afd2bd8196db24ab, < d578933f6226d5419af9306746efa1c693cbaf9c | ≥ 457f44363a8894135c85b7a9afd2bd8196db24ab, < b293dcc473d22a62dc6d78de2b15e4f49515db56 | 5.8
  • linux_kernel≥ 5.8, < 5.10.99 | ≥ 5.11, < 5.15.22 | ≥ 5.16, < 5.16.8 | 5.17:rc1 | 5.17:rc2
Debian1 product
  • linux< 5.16.10-1

3 vendors · 69 products

References

8 links