CVE-2026-98301
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
net: bridge: mst: move switchdev call outside rcu
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 8ca9a750fc711911ef616ceb627d07357b04545e | affected | git | b9661fd2423fc25e91e0517ecc0b6156ad83e3a8 | Unavailable | None listed |
| 4488617e5e995a09abe4d81add5fb165674edb59 | affected | git | 6b431b63219853eef4054e2f1cb073d2ca2059b4 | Unavailable | None listed |
| 3a7c1661ae1383364cd6092d851f5e5da64d476b | affected | git | abf734d150c61acfdfee102169d0e5d1c482e285 | Unavailable | None listed |
| 3a7c1661ae1383364cd6092d851f5e5da64d476b | affected | git | d5c4ee1fa4e83a12afc051c831936cd8e006cde3 | Unavailable | None listed |
| 3a7c1661ae1383364cd6092d851f5e5da64d476b | affected | git | c40ed3e884c8dc0350f26484030438ef24208ff1 | Unavailable | None listed |
| 3a7c1661ae1383364cd6092d851f5e5da64d476b | affected | git | 18a6fe05fb6e18de29fa90d388bb34044114b3d8 | Unavailable | None listed |
| a2b01e65d9ba8af2bb086d3b7288ca53a07249ac | affected | git | Unavailable | Unavailable | None listed |
| e43dd2b1ec746e105b7db5f9ad6ef14685a615a4 | affected | git | Unavailable | Unavailable | None listed |
| 6.1.93 | affected | semver | 6.1.189 | Unavailable | None listed |
| 6.6.33 | affected | semver | 6.6.158 | Unavailable | None listed |
| 6.8.12 | affected | semver | 6.9 | Unavailable | None listed |
| 6.9.3 | affected | semver | 6.10 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.10 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.10 | Unavailable | None listed |
| 6.1.189 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.158 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.112 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.54 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.8 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |