Review reviewCritical

CVE-2026-53088

Linux Linux, linux kernel

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.

CVSS
9.8
EPSS
0.40%
32.6% percentile
CISA KEV
Not listed
Published
2026.06.25
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.40%
Technical severityCVSS 9.8

Vulnerability overview

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.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 < 14e9f86564fff7bcf7f45c1b69080e837b31d185, >= 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 < fb9a3c1f547d0ff024dbfe7b6f327626ddf0a3de, >= 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 < 85f34ec320d3881badfd4edc5fee5cd5012bb54d, >= 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 < 2a74590170427a3ca7cc4bb8690cdd559129c29c, >= 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 < 29394f722f620281f2ee9a47f947734e53d72c90, >= 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 < 4cab761fc51c65aef741fcece4a18f3554edbc09, >= 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 < 72df896e31ddd06fcc5a789f025ad7a62a18bc9b, >= 876dbadd53a7102e2a84afc84ea2bd3ee6dc5636 < 57f3f53d2c9c5a9e133596e2f7bc1c50688a6d38, >= 3bdf77194ea822390b405639b77659071fd2c2e9, >= 3.16.50 < 3.17, >= 4.13, >= 4.13.1 < 5.10.258, >= 5.11 < 5.15.209, >= 5.16 < 6.1.175, >= 6.2 < 6.6.141, >= 6.7 < 6.12.91, >= 6.13 < 6.18.33, >= 6.19 < 7.0.10, 4.13
Fixed versions
3.17, 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-193
CVE-2026-53088 — Linux Linux, linux kernel | SECUFOCUS NOW