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CVE-2022-48929· NVD / CVE Program· CNA Linux

bpf: Fix crash due to out of bounds access into reg2btf_ids.

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.21% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 45ce4b4f9009102cd9f581196d480a59208690c1, 5.16.12, 8c39925e98d498b9531343066ef82ae39e41adae.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 45ce4b4f9009102cd9f581196d480a59208690c1, 5.16.12, 8c39925e98d498b9531343066ef82ae39e41adae 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: bpf: Fix crash due to out of bounds access into reg2btf_ids. When commit e6ac2450d6de ("bpf: Support bpf program calling kernel function") added kfunc support, it defined reg2btf_ids as a cheap way to translate the verifier reg type to the appropriate btf_vmlinux BTF ID, however commit c25b2ae13603 ("bpf: Replace PTR_TO_XXX_OR_NULL with PTR_TO_XXX | PTR_MAYBE_NULL") moved the __BPF_REG_TYPE_MAX from the last member of bpf_reg_type enum to after the base register types, and defined other variants using type flag composition. However, now, the direct usage of reg->type to index into reg2btf_ids may no longer fall into __BPF_REG_TYPE_MAX range, and hence lead to out of bounds access and kernel crash on dereference of bad pointer.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Aug 22, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 10th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
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.

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When you'll hear from us

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  • 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 kernel5.15.15 and later · before 5.15.37
  • linux linux kernel5.16.1 and later · before 5.16.12

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

    • 8d38cde47a7e17b646401fa92d916503caa5375e and later · before 8c39925e98d498b9531343066ef82ae39e41adaeaffected · git
    • 77459bc4d5e2c6f24db845780b4d9d60cf82d06a and later · before f0ce1bc9e0235dd7412240be493d7ea65ed9eadcaffected · git
    • c25b2ae136039ffa820c26138ed4a5e5f3ab3841 and later · before 45ce4b4f9009102cd9f581196d480a59208690c1affected · git
    • 5.16.11 and later · before 5.16.12affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.16.12-15.16.12-1
Red Hat:enterprise_linux:9::appstreambpftool-debuginfobefore 0:7.4.0-503.11.1.el9_50:7.4.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-develbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-64k-debuginfobefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-64k-develbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-debug-debuginfobefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-debug-develbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-debuginfobefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-develbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-devel-matchedbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-docbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-headersbefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-rt-debug-debuginfobefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-rt-debuginfobefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-tools-debuginfobefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5
Red Hat:enterprise_linux:9::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-503.11.1.el9_50:5.14.0-503.11.1.el9_5

+92

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-48927Aug 22, 2024 · iio: adc: tsc2046: fix memory corruption by preventing array overflow
    31Monitor
  • ← EarlierCVE-2022-48928Aug 22, 2024 · iio: adc: men_z188_adc: Fix a resource leak in an error handling path
    22Monitor
  • Later →CVE-2022-48930Aug 22, 2024 · RDMA/ib_srp: Fix a deadlock
    22Monitor

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 Linux45ce4b4f9009102cd9f581196d480a59208690c1Vendor (CNA)
Linux Linux5.16.12Vendor (CNA)
Linux Linux8c39925e98d498b9531343066ef82ae39e41adaeVendor (CNA)
Linux Linuxf0ce1bc9e0235dd7412240be493d7ea65ed9eadcVendor (CNA)
debian:linux5.16.12-1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-devel0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-modules0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debug-modules-extra0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage registry (OSV)
red hat:kernel-debuginfo0:4.18.0-477.81.1.el8_8 · Red Hat:rhel_eus:8.8::baseosPackage 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

No nightly-computed relations.

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

nvd-primary

Attack context

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

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (2 more)

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

All records