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NVD / CVE Program· CNA Linux

CVE-2022-48747: block: Fix wrong offset in bio_truncate()

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.91% (FIRST EPSS); higher than 60% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 3ee859e384d453d6ac68bfd5971f630d9fa46ad3, 4633a79ff8bc82770486a063a08b55e5162521d8, 5.4.176.

Low priority for now. Upgrade to Linux Linux 3ee859e384d453d6ac68bfd5971f630d9fa46ad3, 4633a79ff8bc82770486a063a08b55e5162521d8, 5.4.176 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: block: Fix wrong offset in bio_truncate() bio_truncate() clears the buffer outside of last block of bdev, however current bio_truncate() is using the wrong offset of page. So it can return the uninitialized data. This happened when both of truncated/corrupted FS and userspace (via bdev) are trying to read the last of bdev.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Jun 20, 2024
Updated
Jun 17, 2026
EPSS
0.9% · 60th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-48747

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 5.4.176
  • linux linux kernel5.5 and later · before 5.10.96
  • linux linux kernel5.11 and later · before 5.15.19
  • linux linux kernel5.16 and later · before 5.16.5

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.5affected
    • 943cd69efac437d82a7aea0659fccbcc071730de and later · before 6cbf4c731d7812518cd857c2cfc3da9fd120f6aeaffected · git
    • 85a8ce62c2eabe28b9d76ca4eecf37922402df93 and later · before b63e120189fd92aff00096d11e2fc5253f60248baffected · git
    • 85a8ce62c2eabe28b9d76ca4eecf37922402df93 and later · before 4633a79ff8bc82770486a063a08b55e5162521d8affected · git
    • 85a8ce62c2eabe28b9d76ca4eecf37922402df93 and later · before 941d5180c430ce5b0f7a3622ef9b76077bfa3d82affected · git
    • 85a8ce62c2eabe28b9d76ca4eecf37922402df93 and later · before 3ee859e384d453d6ac68bfd5971f630d9fa46ad3affected · git
    • 5.4.9 and later · before 5.4.176affected · semver
    • before 5.5not affected · semver
    • 5.4.176 and later · up to and including 5.4.*not affected · semver
    • 5.10.96 and later · up to and including 5.10.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.16.7-15.16.7-1
Red Hat:enterprise_linux:8::baseosbpftoolbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseosbpftool-debuginfobefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernelbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-abi-stablelistsbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-corebefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debugbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-corebefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-debuginfobefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-develbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-modulesbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debug-modules-extrabefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfobefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-aarch64before 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-ppc64lebefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-s390xbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-x86_64before 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-develbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-docbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-modulesbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-modules-extrabefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-toolsbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-tools-debuginfobefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10
Red Hat:enterprise_linux:8::baseoskernel-tools-libsbefore 0:4.18.0-553.16.1.el8_100:4.18.0-553.16.1.el8_10

+29

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-48745Jun 20, 2024 · net/mlx5: Use del_timer_sync in fw reset flow of halting poll
    18Monitor
  • ← EarlierCVE-2022-48746Jun 20, 2024 · net/mlx5e: Fix handling of wrong devices during bond netevent
    22Monitor
  • Later →CVE-2022-48748Jun 20, 2024 · net: bridge: vlan: fix memory leak in __allowed_ingress
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux3ee859e384d453d6ac68bfd5971f630d9fa46ad3Vendor (CNA)
Linux Linux4633a79ff8bc82770486a063a08b55e5162521d8Vendor (CNA)
Linux Linux5.4.176Vendor (CNA)
Linux Linux6cbf4c731d7812518cd857c2cfc3da9fd120f6aeVendor (CNA)
Linux Linux941d5180c430ce5b0f7a3622ef9b76077bfa3d82Vendor (CNA)
Linux Linuxb63e120189fd92aff00096d11e2fc5253f60248bVendor (CNA)
debian:linux5.16.7-1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-devel0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-modules0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-modules-extra0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debuginfo0:4.18.0-553.16.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
rocky linux:kernel0:4.18.0-553.16.1.el8_10 · Rocky Linux:8Package registry (OSV)
rocky linux:kernel-rt0:4.18.0-553.16.1.rt7.357.el8_10 · Rocky Linux:8Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-50302152 days apartHID: core: zero-initialize the report bufferKEV
    52Plan
  • CVE-2024-47685123 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()
    36Monitor
  • CVE-2024-3689821 days apartgpiolib: cdev: fix uninitialised kfifo
    31Monitor
  • CVE-2021-4755327 days apartsched/scs: Reset task stack state in bringup_cpu()
    31Monitor
  • CVE-2024-2702250 days apartfork: defer linking file vma until vma is fully initialized
    31Monitor
  • CVE-2024-50143140 days apartudf: fix uninit-value use in udf_get_fileshortad
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-908 · Use of Uninitialized Resource

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records