Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2024-49955: ACPI: battery: Fix possible crash when unregistering a battery hook

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: 0.33% (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 07b98400cb0285a6348188aa8c5ec6a2ae0551f7, 76959aff14a0012ad6b984ec7686d163deccdc16, 76fb2cbf01571926da8ecf6876cc8cb07d3f5183; azl3 kernel 6.6.51.1-5 on Azure Linux 3.0 6.6.57.1-2; azl3 kernel 6.6.57.1-2 on Azure Linux 3.0 6.6.57.1-2.

Low priority for now. Upgrade to Linux Linux 07b98400cb0285a6348188aa8c5ec6a2ae0551f7, 76959aff14a0012ad6b984ec7686d163deccdc16, 76fb2cbf01571926da8ecf6876cc8cb07d3f5183; azl3 kernel 6.6.51.1-5 on Azure Linux 3.0 6.6.57.1-2; azl3 kernel 6.6.57.1-2 on Azure Linux 3.0 6.6.57.1-2 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: ACPI: battery: Fix possible crash when unregistering a battery hook When a battery hook returns an error when adding a new battery, then the battery hook is automatically unregistered. However the battery hook provider cannot know that, so it will later call battery_hook_unregister() on the already unregistered battery hook, resulting in a crash. Fix this by using the list head to mark already unregistered battery hooks as already being unregistered so that they can be ignored by battery_hook_unregister().

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 21, 2024
Updated
Oct 15, 2026
EPSS
0.3% · 27th 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 · 0.3%

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.

Follow CVE-2024-49955

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

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

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.

We use this product, ask for help

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 kernel4.17 and later · before 5.10.227
  • linux linux kernel5.11 and later · before 5.15.168
  • linux linux kernel5.16 and later · before 6.1.113
  • linux linux kernel6.2 and later · before 6.6.55
  • linux linux kernel6.7 and later · before 6.10.14
  • linux linux kernel6.11 and later · before 6.11.3
  • linux linux kernel6.12

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

    • 4.17affected
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before 76fb2cbf01571926da8ecf6876cc8cb07d3f5183affected · git
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before c47843a831e0eae007ad7e848d208e675ba4c132affected · git
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before da964de4c18199e14b961b5b2e5e6570552a313caffected · git
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before 07b98400cb0285a6348188aa8c5ec6a2ae0551f7affected · git
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before ca1fb7942a287b40659cc79551a1de54a2c2e7d5affected · git
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before ce31847f109c3a5b2abdd19d7bcaafaacfde53deaffected · git
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before ca26e8eed9c1c6651f51f7fa38fe444f8573cd1baffected · git
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before 9f469ef1c79dac7f9ac1518643a33703918f7e13affected · git
    • fa93854f7a7ed63d054405bf3779247d5300edd3 and later · before 76959aff14a0012ad6b984ec7686d163deccdc16affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.115-16.1.115-1
Debian:13linuxbefore 6.11.4-16.11.4-1

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-2024-49949Oct 21, 2024 · net: avoid potential underflow in qdisc_pkt_len_init() with UFO
    22Monitor
  • ← EarlierCVE-2024-49952Oct 21, 2024 · netfilter: nf_tables: prevent nf_skb_duplicated corruption
    22Monitor
  • Later →CVE-2024-49968Oct 21, 2024 · ext4: filesystems without casefold feature cannot be mounted with siphash
    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 Linux07b98400cb0285a6348188aa8c5ec6a2ae0551f7Vendor (CNA)
Linux Linux76959aff14a0012ad6b984ec7686d163deccdc16Vendor (CNA)
Linux Linux76fb2cbf01571926da8ecf6876cc8cb07d3f5183Vendor (CNA)
Linux Linux9f469ef1c79dac7f9ac1518643a33703918f7e13Vendor (CNA)
Linux Linuxc47843a831e0eae007ad7e848d208e675ba4c132Vendor (CNA)
Linux Linuxca1fb7942a287b40659cc79551a1de54a2c2e7d5Vendor (CNA)
Linux Linuxca26e8eed9c1c6651f51f7fa38fe444f8573cd1bVendor (CNA)
Linux Linuxce31847f109c3a5b2abdd19d7bcaafaacfde53deVendor (CNA)
Linux Linuxda964de4c18199e14b961b5b2e5e6570552a313cVendor (CNA)
azl3 kernel 6.6.51.1-5 on Azure Linux 3.06.6.57.1-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.57.1-2 on Azure Linux 3.06.6.57.1-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.167.1-2 on CBL Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.167.1-2 on CBL-Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-1 on CBL Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.115-1 · Debian:12Package 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-2024-5792990 days apartdm array: fix releasing a faulty array block twice in dm_array_cursor_end
    28Monitor
  • CVE-2021-47069234 days apartipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry
    28Monitor
  • CVE-2024-499530 days apartnet/mlx5e: Fix crash caused by calling __xfrm_state_delete() twice
    22Monitor
  • CVE-2024-5667467 days apartvirtio_net: correct netdev_tx_reset_queue() invocation point
    22Monitor
  • CVE-2021-47294153 days apartnetrom: Decrease sock refcount when sock timers expire
    22Monitor

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

  • 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-672 · Operation on a Resource after Expiration or Release

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.

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 (12 more)

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

All records