How severe is CVE-2026-53088?

CVE-2026-53088 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-53088 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-53088?

CVE-2026-53088 primarily affects Linux Linux Kernel. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-53088?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-53088 have an EU (EUVD) identifier?

Yes. CVE-2026-53088 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38956.

When was CVE-2026-53088 published?

CVE-2026-53088 was published on 2026-06-24 and last updated on 2026-07-23.

CVE-2026-53088

CVE-2026-53088 is a critical-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-193.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38956
Weakness: CWE-193
Affected product: Linux Linux Kernel
Published: 2026-06-24
Last modified: 2026-07-23

Description

In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix off-by-one in bcmgenet_put_txcb The write_ptr points to the next open tx_cb. We want to return the tx_cb that gets rewinded, so we must rewind the pointer first then return the tx_cb that it points to. That way the txcb can be correctly cleaned up.

Frequently asked questions

What is CVE-2026-53088?: In the Linux kernel, the following vulnerability has been resolved: net: bcmgenet: fix off-by-one in bcmgenet_put_txcb The write_ptr points to the next open tx_cb. We want to return the tx_cb that gets rewinded, so we must rewind the pointer first then return the tx_cb that it points to. That way the txcb can be correctly cleaned up.
How severe is CVE-2026-53088?: CVE-2026-53088 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-53088 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-53088?: CVE-2026-53088 primarily affects Linux Linux Kernel. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-53088?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-53088 have an EU (EUVD) identifier?: Yes. CVE-2026-53088 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38956.
When was CVE-2026-53088 published?: CVE-2026-53088 was published on 2026-06-24 and last updated on 2026-07-23.

References

Affected products (8)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.13:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.13:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.13:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.13:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.13:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.13:rc7:*:*:*:*:*:*

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