CVE-2026-23175 (GCVE-0-2026-23175)

Vulnerability from cvelistv5 – Published: 2026-02-14 16:27 – Updated: 2026-02-14 16:27
VLAI?
Title
net: cpsw: Execute ndo_set_rx_mode callback in a work queue
Summary
In the Linux kernel, the following vulnerability has been resolved: net: cpsw: Execute ndo_set_rx_mode callback in a work queue Commit 1767bb2d47b7 ("ipv6: mcast: Don't hold RTNL for IPV6_ADD_MEMBERSHIP and MCAST_JOIN_GROUP.") removed the RTNL lock for IPV6_ADD_MEMBERSHIP and MCAST_JOIN_GROUP operations. However, this change triggered the following call trace on my BeagleBone Black board: WARNING: net/8021q/vlan_core.c:236 at vlan_for_each+0x120/0x124, CPU#0: rpcbind/481 RTNL: assertion failed at net/8021q/vlan_core.c (236) Modules linked in: CPU: 0 UID: 997 PID: 481 Comm: rpcbind Not tainted 6.19.0-rc7-next-20260130-yocto-standard+ #35 PREEMPT Hardware name: Generic AM33XX (Flattened Device Tree) Call trace: unwind_backtrace from show_stack+0x28/0x2c show_stack from dump_stack_lvl+0x30/0x38 dump_stack_lvl from __warn+0xb8/0x11c __warn from warn_slowpath_fmt+0x130/0x194 warn_slowpath_fmt from vlan_for_each+0x120/0x124 vlan_for_each from cpsw_add_mc_addr+0x54/0x98 cpsw_add_mc_addr from __hw_addr_ref_sync_dev+0xc4/0xec __hw_addr_ref_sync_dev from __dev_mc_add+0x78/0x88 __dev_mc_add from igmp6_group_added+0x84/0xec igmp6_group_added from __ipv6_dev_mc_inc+0x1fc/0x2f0 __ipv6_dev_mc_inc from __ipv6_sock_mc_join+0x124/0x1b4 __ipv6_sock_mc_join from do_ipv6_setsockopt+0x84c/0x1168 do_ipv6_setsockopt from ipv6_setsockopt+0x88/0xc8 ipv6_setsockopt from do_sock_setsockopt+0xe8/0x19c do_sock_setsockopt from __sys_setsockopt+0x84/0xac __sys_setsockopt from ret_fast_syscall+0x0/0x54 This trace occurs because vlan_for_each() is called within cpsw_ndo_set_rx_mode(), which expects the RTNL lock to be held. Since modifying vlan_for_each() to operate without the RTNL lock is not straightforward, and because ndo_set_rx_mode() is invoked both with and without the RTNL lock across different code paths, simply adding rtnl_lock() in cpsw_ndo_set_rx_mode() is not a viable solution. To resolve this issue, we opt to execute the actual processing within a work queue, following the approach used by the icssg-prueth driver. Please note: To reproduce this issue, I manually reverted the changes to am335x-bone-common.dtsi from commit c477358e66a3 ("ARM: dts: am335x-bone: switch to new cpsw switch drv") in order to revert to the legacy cpsw driver.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1767bb2d47b715a106287a8f963d9ec6cbab4e69 , < 488009aa62bb1217ea0624fd5108b79adef4e148 (git)
Affected: 1767bb2d47b715a106287a8f963d9ec6cbab4e69 , < 0b8c878d117319f2be34c8391a77e0f4d5c94d79 (git)
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    Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/ti/cpsw.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "6.17"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.10",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
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                  "versionEndExcluding": "6.19",
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: cpsw: Execute ndo_set_rx_mode callback in a work queue\n\nCommit 1767bb2d47b7 (\"ipv6: mcast: Don\u0027t hold RTNL for\nIPV6_ADD_MEMBERSHIP and MCAST_JOIN_GROUP.\") removed the RTNL lock for\nIPV6_ADD_MEMBERSHIP and MCAST_JOIN_GROUP operations. However, this\nchange triggered the following call trace on my BeagleBone Black board:\n  WARNING: net/8021q/vlan_core.c:236 at vlan_for_each+0x120/0x124, CPU#0: rpcbind/481\n  RTNL: assertion failed at net/8021q/vlan_core.c (236)\n  Modules linked in:\n  CPU: 0 UID: 997 PID: 481 Comm: rpcbind Not tainted 6.19.0-rc7-next-20260130-yocto-standard+ #35 PREEMPT\n  Hardware name: Generic AM33XX (Flattened Device Tree)\n  Call trace:\n   unwind_backtrace from show_stack+0x28/0x2c\n   show_stack from dump_stack_lvl+0x30/0x38\n   dump_stack_lvl from __warn+0xb8/0x11c\n   __warn from warn_slowpath_fmt+0x130/0x194\n   warn_slowpath_fmt from vlan_for_each+0x120/0x124\n   vlan_for_each from cpsw_add_mc_addr+0x54/0x98\n   cpsw_add_mc_addr from __hw_addr_ref_sync_dev+0xc4/0xec\n   __hw_addr_ref_sync_dev from __dev_mc_add+0x78/0x88\n   __dev_mc_add from igmp6_group_added+0x84/0xec\n   igmp6_group_added from __ipv6_dev_mc_inc+0x1fc/0x2f0\n   __ipv6_dev_mc_inc from __ipv6_sock_mc_join+0x124/0x1b4\n   __ipv6_sock_mc_join from do_ipv6_setsockopt+0x84c/0x1168\n   do_ipv6_setsockopt from ipv6_setsockopt+0x88/0xc8\n   ipv6_setsockopt from do_sock_setsockopt+0xe8/0x19c\n   do_sock_setsockopt from __sys_setsockopt+0x84/0xac\n   __sys_setsockopt from ret_fast_syscall+0x0/0x54\n\nThis trace occurs because vlan_for_each() is called within\ncpsw_ndo_set_rx_mode(), which expects the RTNL lock to be held.\nSince modifying vlan_for_each() to operate without the RTNL lock is not\nstraightforward, and because ndo_set_rx_mode() is invoked both with and\nwithout the RTNL lock across different code paths, simply adding\nrtnl_lock() in cpsw_ndo_set_rx_mode() is not a viable solution.\n\nTo resolve this issue, we opt to execute the actual processing within\na work queue, following the approach used by the icssg-prueth driver.\n\nPlease note: To reproduce this issue, I manually reverted the changes to\nam335x-bone-common.dtsi from commit c477358e66a3 (\"ARM: dts: am335x-bone:\nswitch to new cpsw switch drv\") in order to revert to the legacy cpsw\ndriver."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-14T16:27:08.104Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/488009aa62bb1217ea0624fd5108b79adef4e148"
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        {
          "url": "https://git.kernel.org/stable/c/0b8c878d117319f2be34c8391a77e0f4d5c94d79"
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      ],
      "title": "net: cpsw: Execute ndo_set_rx_mode callback in a work queue",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23175",
    "datePublished": "2026-02-14T16:27:08.104Z",
    "dateReserved": "2026-01-13T15:37:45.983Z",
    "dateUpdated": "2026-02-14T16:27:08.104Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23175\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-14T17:15:55.210\",\"lastModified\":\"2026-02-14T17:15:55.210\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: cpsw: Execute ndo_set_rx_mode callback in a work queue\\n\\nCommit 1767bb2d47b7 (\\\"ipv6: mcast: Don\u0027t hold RTNL for\\nIPV6_ADD_MEMBERSHIP and MCAST_JOIN_GROUP.\\\") removed the RTNL lock for\\nIPV6_ADD_MEMBERSHIP and MCAST_JOIN_GROUP operations. However, this\\nchange triggered the following call trace on my BeagleBone Black board:\\n  WARNING: net/8021q/vlan_core.c:236 at vlan_for_each+0x120/0x124, CPU#0: rpcbind/481\\n  RTNL: assertion failed at net/8021q/vlan_core.c (236)\\n  Modules linked in:\\n  CPU: 0 UID: 997 PID: 481 Comm: rpcbind Not tainted 6.19.0-rc7-next-20260130-yocto-standard+ #35 PREEMPT\\n  Hardware name: Generic AM33XX (Flattened Device Tree)\\n  Call trace:\\n   unwind_backtrace from show_stack+0x28/0x2c\\n   show_stack from dump_stack_lvl+0x30/0x38\\n   dump_stack_lvl from __warn+0xb8/0x11c\\n   __warn from warn_slowpath_fmt+0x130/0x194\\n   warn_slowpath_fmt from vlan_for_each+0x120/0x124\\n   vlan_for_each from cpsw_add_mc_addr+0x54/0x98\\n   cpsw_add_mc_addr from __hw_addr_ref_sync_dev+0xc4/0xec\\n   __hw_addr_ref_sync_dev from __dev_mc_add+0x78/0x88\\n   __dev_mc_add from igmp6_group_added+0x84/0xec\\n   igmp6_group_added from __ipv6_dev_mc_inc+0x1fc/0x2f0\\n   __ipv6_dev_mc_inc from __ipv6_sock_mc_join+0x124/0x1b4\\n   __ipv6_sock_mc_join from do_ipv6_setsockopt+0x84c/0x1168\\n   do_ipv6_setsockopt from ipv6_setsockopt+0x88/0xc8\\n   ipv6_setsockopt from do_sock_setsockopt+0xe8/0x19c\\n   do_sock_setsockopt from __sys_setsockopt+0x84/0xac\\n   __sys_setsockopt from ret_fast_syscall+0x0/0x54\\n\\nThis trace occurs because vlan_for_each() is called within\\ncpsw_ndo_set_rx_mode(), which expects the RTNL lock to be held.\\nSince modifying vlan_for_each() to operate without the RTNL lock is not\\nstraightforward, and because ndo_set_rx_mode() is invoked both with and\\nwithout the RTNL lock across different code paths, simply adding\\nrtnl_lock() in cpsw_ndo_set_rx_mode() is not a viable solution.\\n\\nTo resolve this issue, we opt to execute the actual processing within\\na work queue, following the approach used by the icssg-prueth driver.\\n\\nPlease note: To reproduce this issue, I manually reverted the changes to\\nam335x-bone-common.dtsi from commit c477358e66a3 (\\\"ARM: dts: am335x-bone:\\nswitch to new cpsw switch drv\\\") in order to revert to the legacy cpsw\\ndriver.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0b8c878d117319f2be34c8391a77e0f4d5c94d79\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/488009aa62bb1217ea0624fd5108b79adef4e148\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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