CVE-2026-98301 (GCVE-0-2026-98301)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-06 08:45
VLAI
Title
net: bridge: mst: move switchdev call outside rcu
Summary
In the Linux kernel, the following vulnerability has been resolved: net: bridge: mst: move switchdev call outside rcu This is a follow-up of one of sashiko's pre-existing bug reports. br_mst_set_state() calls switchdev_port_attr_set() for nonzero MSTIs while holding rcu_read_lock() which invokes the blocking switchdev notifier chain and may sleep. Nonzero MSTI changes come from netlink with rtnl held. Move the switchdev call before entering the rcu section and assert that rtnl is held. The call cannot be deferred because netlink needs its error and extack. Also DSA reads the old bridge MST state during the callback and checks it. A deferred callback will be late and will see the updated state.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 54/100 over 6633 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8ca9a750fc711911ef616ceb627d07357b04545e , < b9661fd2423fc25e91e0517ecc0b6156ad83e3a8 (git)
Affected: 4488617e5e995a09abe4d81add5fb165674edb59 , < 6b431b63219853eef4054e2f1cb073d2ca2059b4 (git)
Affected: 3a7c1661ae1383364cd6092d851f5e5da64d476b , < abf734d150c61acfdfee102169d0e5d1c482e285 (git)
Affected: 3a7c1661ae1383364cd6092d851f5e5da64d476b , < d5c4ee1fa4e83a12afc051c831936cd8e006cde3 (git)
Affected: 3a7c1661ae1383364cd6092d851f5e5da64d476b , < c40ed3e884c8dc0350f26484030438ef24208ff1 (git)
Affected: 3a7c1661ae1383364cd6092d851f5e5da64d476b , < 18a6fe05fb6e18de29fa90d388bb34044114b3d8 (git)
Affected: a2b01e65d9ba8af2bb086d3b7288ca53a07249ac (git)
Affected: e43dd2b1ec746e105b7db5f9ad6ef14685a615a4 (git)
Affected: 6.1.93 , < 6.1.189 (semver)
Affected: 6.6.33 , < 6.6.158 (semver)
Affected: 6.8.12 , < 6.9 (semver)
Affected: 6.9.3 , < 6.10 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "id": "CVE-2026-98301",
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      "product_status:known_affected": "62",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98301",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.