NVD / CVE Program· CNA Linux

CVE-2024-26705: parisc: BTLB: Fix crash when setting up BTLB at CPU bringup

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: 0.19% (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 54944f45470af5965fb9c28cf962ec30f38a8f5b, 913b9d443a0180cf0de3548f1ab3149378998486, aa52be55276614d33f22fbe7da36c40d6432d10b.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 54944f45470af5965fb9c28cf962ec30f38a8f5b, 913b9d443a0180cf0de3548f1ab3149378998486, aa52be55276614d33f22fbe7da36c40d6432d10b 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: parisc: BTLB: Fix crash when setting up BTLB at CPU bringup When using hotplug and bringing up a 32-bit CPU, ask the firmware about the BTLB information to set up the static (block) TLB entries. For that write access to the static btlb_info struct is needed, but since it is marked __ro_after_init the kernel segfaults with missing write permissions. Fix the crash by dropping the __ro_after_init annotation.

MediumCVSS 5.5 · v3.1—No exploit Fix available

Published: Apr 3, 2024
Updated: Jun 17, 2026
EPSS: 0.1% · 9th percentile
CWE: CWE-862

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

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

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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.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

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

linux linux kernel6.6 and later · before 6.6.18
linux linux kernel6.7 and later · before 6.7.6
linux linux kernel6.8

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
- 6.6affected
- e5ef93d02d6c9cc3a14e7348481c9e41a528caa1 and later · before 54944f45470af5965fb9c28cf962ec30f38a8f5baffected · git
- e5ef93d02d6c9cc3a14e7348481c9e41a528caa1 and later · before aa52be55276614d33f22fbe7da36c40d6432d10baffected · git
- e5ef93d02d6c9cc3a14e7348481c9e41a528caa1 and later · before 913b9d443a0180cf0de3548f1ab3149378998486affected · git
- before 6.6not affected · semver
- 6.6.18 and later · up to and including 6.6.*not affected · semver
- 6.7.6 and later · up to and including 6.7.*not affected · semver
- 6.8 and laternot affected · original_commit_for_fix

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Debian:13	linux	before 6.7.7-1	6.7.7-1

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-2024-26703Apr 3, 2024 · tracing/timerlat: Move hrtimer_init to timerlat_fd open()
22Monitor
← EarlierCVE-2024-26704Apr 3, 2024 · ext4: fix double-free of blocks due to wrong extents moved_len
31Monitor
Later →CVE-2024-26706Apr 3, 2024 · parisc: Fix random data corruption from exception handler
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 / package	Fixed version	Source
Linux Linux	54944f45470af5965fb9c28cf962ec30f38a8f5b	Vendor (CNA)
Linux Linux	913b9d443a0180cf0de3548f1ab3149378998486	Vendor (CNA)
Linux Linux	aa52be55276614d33f22fbe7da36c40d6432d10b	Vendor (CNA)
debian:linux	6.7.7-1 · Debian:13	Package 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-2023-5264214 days apartmedia: rc: bpf attach/detach requires write permission
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).